2003 f150 backfire through intake This will ignite the fuel with the intake valve open = backfire through the intake thats kinda what i was thinkin View attachment 444028 Oct 29, 2019 · Backfire through intake Jump to Latest 3. There can be many causes of this, some simple, some very expensive. 6L - I bought my '99 F-150 4. Jul 28, 2009 · As the title states once it starts up it immediatly begins to run very rough and backfire through the intake. 40) with E4OD trans. Here you can find questions containing - backfireVarying issues involving engine backfire, throttle body, and 3/19/2025 2003 ford f150 v6 truck has a backfire and pops through 1/6/2025 2002 ford f250 v6 truck backfiring bad have to keep your 12/30/2024 1985 Bronco Backfire while attempting to start 9/23/2024 Changed plug wires now vehicle runs and backfires truck is 8/13/2024 ford contour se 2 Jun 24, 2009 · This one has had me stumped for weeks, maybe someone here can help. 6 bad backfire! - I recently got a 1998 F150 4x4 with the 4. Miss at #1and a small backfire in the pleneum. Need some help guys, this truck is kicking my ass. I suspect the Powertrain Control Module or the Camshaft Sensor. Intake valve not closing, or cam off a tooth, or timing is too advanced, or ? I can't see it being related to fuel, unless there's something really, really hot in the intake that's causing it to ignite before getting into the cylinders. 4 triton. 4 3v Expedition. Sometimes backfires in manifold. 0 2WD extended 122000 miles Symptoms started suddenly. Sep 15, 2012 · I had the same problem with my 2004 F150 5. 0L 4x4 Manual trans, H9 axle, single fuel tank, auto locking hubs, short wheel base, single cab, trailer light harness installed, aftermarket air intake, eliminated cats 7 posts • Page 1 of 1 Return to “1997 - 2003 Ford F-150” Oct 1, 2009 · Been hearing a backfire through the intake while going up hills. I replaced the fuel filter, air filter, spark plugs and wires. When the truck is cold, (-11C this morning) and it's started to warm up, I can hear a small backfire in the intake when clearing snow off the 2016 f150 intake backfire Took a 4hour trip all around the other day. I didn?t think much of it because I had planned on changing the spark plugs as soon I could. About 3 months ago, I'd get an occasional shake when accelerating. Mechanic's Assistant chat Customer: 2003 ford f150 v6 truck has a backfire and pops through upper intake a piece of the intake is blown off picture below only code is 1 o2 sensor code that’s my question is would replacing that part of intake fix my problem or was this cause by something else Aug 26, 2015 · Engine / Drivetrain Talk - 5. 6l last August. I did an intake manifold gasket to it, hoping it would solve the problem. The K&N air system can cause unmetered air, affecting sensor readings. Oct 21, 2024 · 1987 - 1996 F150 & Larger F-Series Trucks - Backfire through carburetor - I have a 1988 F150 302 C6 trans converted to run on a carburetor. From about 1000 to 2000 rpm truck cuts out and almost dies then backfires through intake. However, diagnosing and fixing this problem requires some knowledge of the system. 8, 2. Jun 14, 2010 · 90 F150 Custom 5. Backfires are the premature ignition of fuel through the intake plenum or manifold. 6, 2. 2. 2 v6 backfires alot at idle the pcm said o2 sensors and cam sensor it says cam sensor problem so tried a Jul 2, 2005 · Today started out well, the wife and I packed up all of our camping equipment and set out for a remote 4x4 only campsite. Engine would start well, but would usually stall several times w/o lots of throttle feathering. When I give it gas and try to accelerate, it boggs down, has little power, and then backfires through the intake. 054. Understanding these causes is pivotal for maintaining your vehicle’s health and performance. 6 v8 in it. Mar 18, 2006 · Aerostar - backfire through intake - 'ello all 97 Aero, 3. Jun 29, 2014 · Hi all trying to get help with my 03 5. Oct 5, 2013 · So I just picked up a 2003 chevy 3/4ton 6. Talked to a respected Ford guy, said it was running lean. It has 212000 miles on it, and came up with a code for misfire on cylinder #3. Which leads me Sep 4, 2014 · Backfire through the intake is a rich condition, through the exhaust is a lean condition. 0 labor hours on upper intake and then labor hours on both upper and lower intake 2003 ford f150 v6 truck has a backfire and pops through upper intake a piece of the intake is off picture below only Read less 0 Likes Jun 22, 2009 · Maintenance Shop - Stumped by backfire and shaking problem - Hello everyone, longtime lurker, first time poster. Wondering what causes backfire through intake? Learn the common reasons behind intake manifold backfire, from ignition timing errors to fuel system issues, and how to fix them before they cause serious engine damage. Tried everything, cleaned both carbs by ultranosic bath but still the same Today i let the bike run in idle on the front cillinder and disconnected the rear coil, after 30 seconds i switched over to the rear Jul 15, 2008 · A Lean condition can cause backfiring or popping back through the intake. Understanding the intake system and the causes of backfiring will help you confirm or rule out this issue. 0 which has a egr deleted brand new oil cooler and both HPOP's and it had a occasional miss with the typical #5 or 6 Injector balance default code on my Edge so I had a guy put a Jan 20, 2011 · 1994. 4 and it started popping through the intake backfiring having no power. 6. Dec 18, 2024 · Engines backfiring through the intake are a puzzling and potentially damaging issue that can leave any vehicle owner concerned. How to fix a backfiring engine by showing you the most common symptoms and solutions. 2 L SHAKES AND BACKFIRES AS I ACCELERATE by SHAWSHANK » Fri Jan 22, 2010 11:25 pm Mar 24, 2007 · 1997 - 2006 Expedition & Navigator - Backfire thru intake - I have a '99 Expedition with a 5. 6L V8? Sep 27, 2017 · If you're getting backfiring through the carb, then there has to be a path open between cylinder and carb. 0 v6 with 178000 miles on it. I have a 93 F-150 302 with AOD. I was walking back outside when I heard Oct 19, 2018 · I drive a 1997 F-150 that we purchased several years ago from my brother-in-law. It spit out a spark plug and I had some PI 4. 4L engine To save someone some time, the bottom line of the problem was a faulty brand Dec 20, 2005 · If it backfires through the intake the intake valve is open when the sparkplug fires. 6l heads off a romeo mustang sitting around. Since you've already basically ruled out #1, I'd check the fuel pressure. There are several causes for this issue. In this article, I'll delve into the common culprits behind engine backfires during acceleration. Will do this at any RPM so long as the throttle position is not changed. 8 & 4. I was having a terrible shutter at 45-55 MPH and under load. Strong smell of fuel from exhaust, clearly flooded. Feb 17, 2011 · 1983 - 2012 Ranger & B-Series - 1997 ford ranger backfiring during acceleration - i have a 1997 ford ranger with a 3. Aug 25, 2011 · Hey I'm new here and desperate for answers! I'm in the middle of PCSing with the Air Force to Japan and was getting my truck ready to sell, when it started acting up when I accelerated after right after starting the engine. Jun 8, 2019 · 1997 - 2003 Ford F150 - 99 4. I have changed spark plugs, plug wires and coil packs. Stopped that engine in a Jerk! Started on the second try though. Mar 15, 2014 · 1987 - 1996 F150 & Larger F-Series Trucks - Severe backfire, no power - I was hoping I could figure this out without asking you guys for helpAGAIN! but, I couldn't F-150 in signature. 4 Misfire and Intake Popping - Okay, so i was driving home one day in the truck cruising at 60 then all of a sudden i lose all power and the truck goes into a limp mode. I have a 1992 5. It had a Apr 9, 2016 · 1997 - 2003 Ford F150 - 1997 4. Jan 11, 2014 · 2003 Ford F-150 SuperCrew King Ranch 4x4 Previous trucks: 02 F-150 SuperCrew XLT, 11 F-150 EcoBoost Lariat, 07 Ranger, 01 SuperCrew, 98 SuperCab 4x4 Other Fords owned: 00 Taurus, 96 T-Bird, 95 Escort GT, 93 Mustang 5. ran injector cleaner,replaced injector and plugs and coil with no results. Is this an indication of needing to change the timing chain or is there something else I need to look at? Mar 14, 2013 · A backfire through the intake happens when the spark occurs when the intake valve is open on that cylinder. It's most likely your timing chain (s) slipped and the valve timing is now retarded. had access to the Ford computer and did May 12, 2011 · Backfire through the carb is usually a sign of retarted timing or a lean condidtion caused by the accel pump not working right or at all. Oct 6, 2010 · I could hear it backfiring into what sounded like the intake manifold (really loud plasticy pops). - Leaking exhaust valves - Timing (usually causes intake manifold back fires) - Vacuum leaks - Insufficient fuel delivery to the carb. 6 V-8 backfires through the intake at start-up then dies. Yesterday it started sounding funny. But it did not solve the problem. Fire it up and it runs great in the upper RPM range, Feb 27, 2019 · 2015 - 2020 Ford F150 - Backfire in Intake when Cold - Hi all, I've heard this odd noise a few times now and just wanted to see if anyone else has heard it, or heard of it. I never heard of a Computer controlled engine backfiring. Jun 8, 2015 · MAJOR stumble, power loss when throttle is applied by flynnt77 » Mon Jun 08, 2015 9:16 pm Apr 14, 2005 · Did it back fire out of the exhaust?? or out of the intake? I've had mine back fire out the intake before. 5 EcoBoost with backfire or popping noise from the intake. Your F150 may produce excess vibration, especially at lower RPM. Feb 21, 2019 · 2007 - 2014 Expedition & Navigator - Small backfires through the intake and a misfire at #1. 4 Triton 3v engine and every time i floor it and the engine reaches 3000 rpms the truck backfires and looses power. Possible causes are a bent valve, damaged valve head or valve seat, or a broken valve spring. For a backfire to occur a cylinder or cylinders would need to be open in reverse. This is a very common problem with cars today and the fix can be very easy and often times performed at home. 7K views 2 replies 2 participants last post by RamBam007 Feb 21, 2021 R We would like to show you a description here but the site won’t allow us. 0l 4x4 the problem just started this winter. The plugs, wires, and air filter were changed not to long back. 9 does it. Last week it backfired the entire way up a long grade (a good 45 seconds) and didn't clear out until i crested the hill. what did I check out timing Aug 5, 2012 · 1987 - 1996 F150 - Random bucking, stalling, backfiring through intake - Well I got a new problem guys. I've never heard one backfiring through the exhaust yet. The rotor will still point to #1 on the cap 180 out. Check the PCV valve for proper operation, as it regulates crankcase ventilation and can cause air 2004 - 2008 Ford F150 - Crank, no start, backfires out intake? - Figured I'd go all out from my first post 04 5. 6L and I have a misfire and "popping" or backfire when I take off or under a load. I slapped them on, got it all back together and now it's doing something weird. I'm pretty sure that I reconnected Sep 4, 2013 · 6. 4 died on way home, just lost power all the sudden. Typically backfiring means either the ignition is firing way too early or an intake valve is sticking open (either way allowing the flame front to proceed into the manifold). Jun 11, 2002 · 3. When I went to pull in my drive way the truck lost all power couldn’t even drive up my driveway and started backfiring through the intake and rough idle . Either you are lean, or your are firing out of time via bad wires, wire routing, or mechanical timing failure. This imbalance can lead to Sep 21, 2011 · Ford F150 Forum - Community of Ford Truck Fans Pre-1997 F150 1987 - 1996 F150 92 f150 with 88 351w no power and backfire through intake Topic Sponsor Nov 26, 2024 · Wondering why your ATV is backfiring? Discover common causes like fuel issues and exhaust leaks, plus tips from Perfex Industries to keep your ride smooth! A quick check on Prodemand (one of our resources) shows the number 1 cause of backfiring through the intake in this car to be ignition related (coil, ignition module, spark plugs, wires) and #2 would be fuel pressure related (fuel pressure regulator, fuel pump). This problem just stared this winter. I tried to start it but the GPR was badnext try the GPR made, plugs got hot and BANGgave me a case of the "Wide Eyes" and creased seat cover. Use a vacuum gauge connected to any convenient spot on the intake manifold. Oct 26, 2007 · A fuel injection distributorless system should never backfire under normal operation. At 17,800 miles all of a sudden the truck pops and makes a bang sound When in gear and slight acceleration the motor backfires or pops through intake and loss of power occurs until more gas is applied then it takes off and accelerates. 4L. I have a 2003 ford f 250 5. I looked it up and it said it could be a problem with the timing, having a lean mixture, or a vacuum leak Has anyone else had this problem? Anyone. Fuel mileage may suffer. 6 engine problems including the intake manifold, low oil pressure, misfires, and timing chain. 6L 4x4. For A, remove the hose while the motor is running and see if any gas is coming out of the fuel regulator or hose. My truck is: 2006 F-150 XL, 5. So my new-to-me carbureted 1200 Sportster with V&H pipes backfires on the intake side when I am even gently on the gas, which causes the bike to die each time it does so. I have heard this noise before when i was replaceing Mar 29, 2006 · 1997 - 2003 F150 - Backfire at start-up - My 97 4. Also started shaking very badly. Feb 7, 2024 · Discover the causes behind engine backfire through the intake and learn how to prevent this disruptive phenomenon. it has 150,000KM and was untouched until it came to our shop. 6L V8? Mar 24, 2021 · Ford 4. Yesterday it started roaring going up hill and sounds like it is almost constantly backfiring, along with the poor power. Jun 11, 2003 · Sticking valves: If a intake valve is bent, has a bad spring or is misadjusted, the engine will sometimes backfire through the intake. 0L push rod engine. Bad ignition module, ecm, etc. Backfire on intake side — tried these 3 solutions w/out result yet. I shut it off and restarted it and it didn’t Aug 17, 2008 · Engine bogs then backfires through intake 1 reading Jump to Latest 28K views 6 replies 3 participants last post by 360Nekked Sep 1, 2008 Jan 9, 2017 · 1973 - 1979 F-100 & Larger F-Series Trucks - Backfire through carb. Didn't seem to matter if i gave it Dec 21, 2014 · 2004 - 2008 Ford F150 - Solved: Misfire Problem - I had what seemed like a serious problem with my engine. Mar 4, 2003 · 180 out if it's firing through the intake. 4 2wd supercab with 138k on it has been a great truck absolutely no problems, til last week. A stuck or poorly sealing intake valve, timing chain, crankshaft position sensor or head gasket failure come to mind as a cause, but there are others. Apr 18, 2013 · Got the truck all done and the next day it would not start. It got rid of the cylinder 1 3 5 misfire codes, and the 02 sensor high voltage code. Truck did perfect come home shut it off and drove to the store and back. 0 backfiring? - My 2018 F150 (5. 4 backfiring, popping, no power, shaking - Started my dads 5. 4 lariat. Jan 5, 2019 · 2004 - 2008 F150 - 2007 5. - I finally got me 75 F-150 back together and running fairly well except for the fact that if you really get on the gas from idle it will backfire through the carb. Above about 1/2 throttle, it started hesitating, popping and backfiring. sometimes the check Dec 1, 2015 · A. By far the most common cause for a backfire on this engine was a timing chain issue. B. considering it being cam phasers Possibly? May 10, 2004 · A backfire through the carb/throttle body indicates igniton before the combustion chamber, like an intake valve not opening, extremely wrong ignition timing, etc. Customer: I've got a 2003 Ford Ranger Edge with a 3. You can rev it up a little more though and it will get past that Mar 24, 2025 · 2015 - 2020 Ford F150 - Idle issues and small intake backfire? - I am having a rough idle in my 2018 5. Starting it and the backfire up through the intake occured. The backfire sounds like a pop and its very intermitten. 6L because of a small leak in the #1 cylinder. 0, 93 Festiva, 92 Sable, 86 Mustang, 82 Mustang F150 Forum makuloco2000 Regular Member Posts: 145 Joined: Wed Nov 20, 2013 4:44 am May 10, 2019 · 2015 - 2020 F150 - 5. It wants to start but won't, when it almost does start it backfires through the exhaust, mashing the pedal to the floor makes Apr 11, 2009 · 1997 - 2003 F150 - Backfire at starting??? - 97 F-150/4. It's my dads old 01 F150 king ranch with the 5. Basically the intake valves are opening when the exhaust valves should. I would check base timing and then check timing fully advanced to see if something is retarding timing. Pretty clean 2007 5. - Misfiring cylinder letting the unburnt fuel mixture into the exhaust stream. 2 auto. 1999 F-150 4x4 Auto 5. In this comprehensive guide, we will delve into the common causes behind an engine backfiring through the intake. 0 about a month ago for a work truck. When you stand on the throttle, sometimes itl by chochoo » Fri Mar 27, 2009 12:21 am Change your coil packyou probably hear that popping through the intake under light load. 2 poor acceleration, intake backfire - truck is a 1997 f150 4. 0 liter V6 Ford Taurus engine vin 04 Ford Taurus 3. The engine was idling very sporadically (200-1500rpm) in an almost an oscillating fashion. backfire through the intake I have a 1991 f-150 that smeels of raw fuel ,runs very rogh and the fuel pump will not - Ford 1991 F150 question Mar 23, 2009 · My cherokee is making a popping noise and backfiring through the intake. Sep 17, 2011 · Ford F150 Forum - Community of Ford Truck Fans Pre-1997 F150 1987 - 1996 F150 92 f150 with 88 351w no power and backfire through intake Topic Sponsor Jun 11, 2025 · Repetitive Engine Backfire This portion of the guide to for when a backfire is repetitive and generated when the engine is simply running at idle, or at cruising speed and can be inline with the engine RPM. The result is often a loud bang like a gun shot, and often black smoke is visible from the tailpipe. Run the engine at 1000 RPM & look for 18-21 inches of vacuum with a steady needle. It does not occur while idiling. 4 triton and when i really get on the gas it seems to backfire i just replace the o2 sensor May 18, 2019 · To stop a car from backfiring, you should ensure the fuel-to-air ratio is correct, the ignition system is functioning properly, the engine timing is accurate, and the exhaust system is not malfunctioning. That unsettling noise and the fear that something might be wrong with your engine are all too familiar. There may be no noticeable symptoms at all. 0l backfires through intake - Hi everyone I am having a problem with my 89 f150 with a 5. Dec 13, 2016 · 2004 - 2008 Ford F150 - 5. Now if you had a wet nitrous kit that would make sense. Mar 4, 2015 · A backfire through the intake generally (but not always) means that your ignition is firing while an intake valve is open. And for it to blow back into the intake with enough force to break it, you are most certainly looking at a chain issue. Intake valves are almost always burnt if getting intake firing, but more than likely it's out of time (and isn't starting) if youre getting intake firing. Got any ideas on this one? May 26, 2011 · 1997 - 2003 F150 - HELP ME!! '02 F150 New Engine Backfiring thru intake at Statup - We have a 2002 F-150 4. May 13, 2010 · I just bought a superchip and ive had it on the truck for about 2 weeks now. This one has had me stumped for weeks, maybe someone here can help. If your engine uses variable valve timing, a failed camshaft actuator can cause backfiring. For B. Possibilities: - Secondaries jetted to rich or opening too soon. only two ways the 5. - Hey guys I have a 1997 with a 4. when climbing hills, in 3rd or overdrive and lower speed, ie 35-45 it would backfire through the intake. sometimes it wont pass 3000 rpm it just stays there and backfire and have no power. The sensors will detect too much oxygen, leading the PCM to make the engine run rich, resulting in excessive fuel being dumped through the engine. Ive owned this truck for 12 years, but now losing my mind. Around October last year it started backfiring when I would hit the gas to pass someone on the highway. ive had the truck for a year with no problems until now. I recently did a headgasket job and put everything together and now it has a bad back fire. The engine may backfire. Any suggestions please and thanks. 0l backfires through intake - Hi everyone I am having this problem with my 1989 f150 5. Long story short, I Dec 8, 2023 · An engine backfiring through the carburetor is a sign of malfunction, often related to the fuel-air mixture, ignition timing, or exhaust system. You may smell raw gas coming from the tailpipe. we have changed plugs and wires, done a comp test, reprogrammed the pcm, replace the crank sensor, cleaned the Apr 21, 2019 · 2004 - 2008 Ford F150 - 2005 5. It can be caused by a too rich or too lean condition. Feb 6, 2014 · 2006 F150 Cranks no start maybe cam phaser? When you were cranking it before finding out it was the cam phaser, did the cranking sound weird like it was light on compression and almost backfiring through the intake like a bubbling noise? Feb 20, 2013 · 1987 - 1996 F150 - 1989 f150 5. Dec 4, 2007 · Backfiring through the intake is due to one or more spark plugs firing while an intake valve is still open. the hose is plugged off. 9, 4. Feb 24, 2016 · 1997 - 2003 F150 - HELP ME!! '02 F150 New Engine Backfiring thru intake at Statup - We have a 2002 F-150 4. When in gear and slight acceleration the motor backfires or pops through intake and loss of power occurs until more gas is applied then it takes off and accelerates. May 30, 2012 · A dist can't cause backfiring by not firing, and as they have mechanical contacts, there really can't be an electrical backfire other than water in the dist - not to my knowledge anyway. If the engine backfires, it could blow the intake. I completely went through the carbs, replaced both plugs, no change. Like many others, it has trouble accelerating up hills and would occasionally backfire. May 15, 2021 · Backfiring through the intake would point to a timing issue, I hate to say it but the front cover needs to come off. has intake backfire and poor acceleration off the line. When you first start it up in the morning it runs like a champ, but after you drive about 30-45 minutes in town then rpms with start surging up and down, then when you try to give it Nov 3, 2013 · 1997 - 2003 Ford F150 - Lack of power and backfire '99 4. Feb 20, 2013 · 1987 - 1996 F150 - 1989 f150 5. A rhythmic popping sound through the intake manifold which is not as prominent as lean, under power backfires. 4 four months ago and it had a stumble at full throttle. My ford f150 4. Had this engine installed and a year later it was bad and was determined it was a manufacturer defect so they sent a replacement engine under Feb 28, 2015 · 2004 - 2008 Ford F150 - 06 5. To date, I have done the following; Replaced the fuel pump Replaced the fuel filter Replaced 3 fuel injectors and thoroughly cleaned the other three Replaced the upper intake gasket Replaced the lower intake gaskets Cleaned the original mass air meter Replaced the mass air meter Mar 26, 2022 · 1997 - 2003 F150 - 2000 f150 4. Jan 11, 2021 · A backfire can't happen in a traditional way because fuel is not being injected at the throttle body. The cylinder head temperature sensor is telling the computer the motor is cold all the time. Jul 29, 2015 · This article applies to the Dodge Ram 1500 (1994-2008). now the only scenario i can think of where u might do this is in a panic trying to Discover more answers Taurus: changing a 1995 3. The engine went bad and we bought a new engine (remanned ATK). Oct 17, 2024 · Ever experienced your car's engine backfiring violently when you step on the gas? It's not just a loud noise; it could be a sign of underlying issues. 0 in my 88 F-150 for a couple of months now, and never seem to be able to pinpoint the problem. After a short initial period, it would run very Jan 2, 2013 · 1997 - 2003 F150 - 5. On start, it ramps up RPM and then lopes during idle. 0L Power Stroke Diesel - Backfiring through Intake!!!! - I need some help guys,The story Just the other day I started my 06 f350 6. Jun 13, 2018 · It will also sometimes backfire through the intake. Backfired through the intake. i had it on fuel econonmy setting, i was sitting in my yard messing around reving it and when i let off the gas i swear my truck backfired. i have noticed that when the truck is cold it will backfire when i push the gas pedal and it will seem like there is no power then it will backfire and start running Oct 3, 2004 · 1987 - 1996 F150 & Larger F-Series Trucks - Engine cranks but no start and backfires through exhaust - Ok I thought I had this thing fixed when I got the fuel pumps to run but boy was I wrong. It backfires through the intake on the #4 cylinder only when idling, and I experience a steady backfire through all cylinders when revving. Eventually, I got it running. We would like to show you a description here but the site won’t allow us. 3L Power Stroke Diesel - Popping through intake - I was cursing along at about 45mph and out of no where I start hearing the engine makeing a very loud popping noise that was coming back through the intake, so i quickly pulled off and cut the engine. This reaction is combined with the vehicle running roughly. I was at the shop grabbing some parts and left the truck running outside for 10 minutes. Nov 20, 2019 · A bad timing chain or belt can cause your F150 to fire the spark plug too late in the timing cycle. the fuel regulator diaphragm is leaking gas directly into the intake through the vacuum hose attached. Jul 31, 2003 · 2. 6 back fire threw intake and exhaust - OK where to start in stalled a new to me motor in my truckmotor came out of a crown vic swap all parts over and installed motor went to start it started back firing and popping threw intake and exhaust. I put in new autolite plugs and wires and gapped them to . (Its not exhaust) I have replaced the plugs, cops, both cam sensors, compression test around 180 Oct 20, 2022 · Discover the answer to your burning what causes backfiring through the exhaust question with our in-depth guide. Then, I developed a rough idle. Mar 16, 2020 · 351 f150 backfiring through throttle Discussion in ' 1992 - 1996 Ford F150, F250 and F350 Truck Forum ' started by Tchardkore, Mar 16, 2020. 4 won't turn over, backfires through intake - my 06 f150, 5. een The engine starts and runs fine, when I leave for or from work Oct 21, 2024 · 1987 - 1996 F150 & Larger F-Series Trucks - Backfire through carburetor - I have a 1988 F150 302 C6 trans converted to run on a carburetor. At 9,000 miles I installed a 89 octane perf/tow tune from 5 star tuning, which has been great for towing the trailer. Drove great. Dumped a bottle of fuel injector cleaner in the gas tank. The compression is 150 on all cylinders, and all injectors have the same ohm reading Dec 26, 2023 · Backfiring into the intake suggests that an intake valve is partially open on the compression stroke when it should be closed. 0 (bored . It's very violent, missing on all cylinders according to the shop. When I pained the tank I replaced all of the internals, pump, regulator, filter before sealing it up. 4 intermittent intake backfire - Hi guys. Nov 13, 2015 · I have a 1998 Ford F-150 4. The motor revs fine ( just real rough with Sep 7, 2011 · Re: backFiring through the intake? by 99offraod5. 4 vacuum line - Hi, all I had mentioned this in my previous post about a misfire problem but thought I might should start a new thread since this is different issue. 2L V6 - 4. I have an intake off an old 302 from the woods (possibly from 1979) and I got a Holley 2300 Street Avenger carb. It used to do this periodically, but it is now doing it a lot more often. 4 176,000 On the back of my intake toward firewall there is a 3/4 hose barb. Sounds like a knock or drum sound in intake. What could this be, cause ive never heard of one of these things Sep 16, 2018 · Ford F150 P0304 Symptoms Here are the most common symptoms of P0304 in the Ford F150. My rev limiter is set at 5400rpms. Backfiring through your Ford's intake might signal issues with air-fuel mixtures or ignition timing—discover the causes and solutions here. Lean condition during acceleration can cause the air fuel mixture to burn so slowly, that combustion is still taking place during the exhaust stroke, and even when the intake valve opens. Sent from my iPhone using Tapatalk 3. 4 » Wed Sep 07, 2011 8:36 pm i did not have the chains off, but could the lifters being changed have changed this? if so any ideas how to retime an over head cam engine? or any idea how to check the timing in general? Mar 21, 2011 · 2004 - 2008 F150 - backfire under load during aceleration - i have a 2006 ford f 150 with a 5. Give your distributor a little twist to advance it. 5 - 1997 7. Jan 17, 2001 · 1987 - 1996 F150 & Larger F-Series Trucks - Backfiring 5. Additionally, if the cam synchronizer is worn, it may cause timing issues, which can lead to backfiring. How reliable is the Ford 4. 4 No Power, Popping Intake, Mis-Fires - bought a 2006 5. It all of a sudden started popping thru the intake and developed a real bad miss. The motor may be out of time at the timing chain and Jun 7, 2003 · 1978 - 1996 Big Bronco - Poor Acceleration and Backfiring Solved - I have had a long running problem w/ my 90 Bronco w/ 302 V8 w/ 140K miles, and decent cylinder compressions. 0 V6 - backfire through intake, little acceleration - I have an '89 Ford Ranger, 6cyl 2. Unravel the mystery now. 2003 Ford F-150 Backfiring Through Intake When Heat Is On F-150 models may experience intake backfire and rough idling related to air intake or ignition system issues. engine-1972 302 block edelbrock F4B manifold Mar 2, 2010 · Okay, so i bought a 2002 v6 dakota from a friend. Typically it will make the sound 2-4 times then clear out and be fine. 4 3v and I did plugs, coils, phasers, and it turned out to be the timing chain guides that broke and through the whole truck out of wack. Despite cleaning the throttle body and replacing intake and throttle gaskets, inspect the throttle position sensor and ensure the throttle plate moves smoothly without obstruction. truck starts up and runs rough for about a minute, code says cylinder #1 misfire on start up. The sparkplugs looked kinda old so I figured that they may be the problem. At 17,800 miles all of a sudden the truck pops and makes a bang sound Aug 4, 2010 · 1987 - 1996 F150 & Larger F-Series Trucks - 95 302 backfires through intake - 95 f150, 302, auto trans, backfires through the intake at 4000rpm under load while driving, it idles fine and runs good at lower rpm's, we have checked fuel pressure and for vacuum leaks both seem to be ok, any ideas what it could be, Dec 29, 2009 · A backfire is unburnt fuel igniting in the exhaust system. - 2007 5. May 10, 2019 · I have the exact same problem 2003 Kawasaki Prairie 650, seems to idle fine but as soon as you give it power starts to caught, sputter, spirit and backfire through the carbs. The longer the ascent was Apr 3, 2020 · Drivetrain - Truck stalls under loadbackfires through intake - New Member Thanks for letting me join! Still navigating the forum so forgive me if this is posted in the wrong place. After I changed mine I could not get rid of the pinging. Backfiring through the intake often indicates a lean air-fuel mixture or ignition timing problems. 0 xl/stx 145k+ miles I have done vvt solenoids and checked for vacuum leaks. 6 backfiring. Mar 24, 2021 · Ford 4. 0 EFI - I have been having intermittent problems with the 5. If it does not work, look down your carb (with the engine off) and see if it's shooting gas when you work the throttle. However almost instantaneously at 4600rpms a backfire occurs creating a severe loss of power. Several folks that had similar concerns but nothing that I've been able to pin down the same as mine Back story: Bought the truck used at auction. Had this engine installed and a year later it was bad and was determined it was a manufacturer defect so they sent a replacement engine under Mar 11, 2019 · 2015 - 2020 Ford F150 - 2018 5. 4. 0 Engine "popping" sound - Just over 2000 miles on my '19, just recently started hearing an audible pop or maybe a single knock after accelerating moderately and letting my foot off the gas. Sep 12, 2013 · 1997 - 2003 F150 - Ford F150 4. From incorrect ignition timing to fuel system Jan 22, 2010 · 2001 F150 4. One possible cause is a lean air-fuel mixture, where there's not enough fuel relative to the air in the combustion chamber. Feb 11, 2007 · Fuel Injection, Carburetion & Fuel System - backfire through carb - I have an 86 F-150 with a rebuilt 302 that backfires through the carb under a load and during hard acceleration,Why? I had the timing set to spec so i tried to tune by ear, I don't think it is the timing. 9L. I've done a new valve job, replaced the plugs, wires, coil, knock sensor, MAF, TPS, and fuel pump. 0, 18,000 miles) has developed what sounds like a backfire. Aug 11, 2018 · Okie is correct, backfire through intake is a "Lean" pop. A puffing or popping noise near the throttle body often indicates a sticking throttle plate or faulty PCV valve. getting annoyed and sick of putting money into it, the truck runs mint when warmed up can't figure the problem for the May 10, 2004 · A backfire through the carb/throttle body indicates igniton before the combustion chamber, like an intake valve not opening, extremely wrong ignition timing, etc. Looks to have been Jan 21, 2017 · So after a few months i finally fixed mij backfiring issue thru the rear carb. I drove the truck about 150 miles round trip today never an issue or a hint of one. It has about 140,000 miles on it. Turned out the backfire broke the intake manifold runner control arms and I was getting poor EGR flow to the left bank. On a long uphill segment, I started to have problems going up the hill. Check engine light Your truck may run rough, be down on power, and stall. If the intake backfires, this is an issue that must be addressed immediately. 2001 F-150 XL 4. 0 & SOHC 4. I've been searching and searching with no real help. 2L V6 with 99k miles. 6 and since I changed the intake gaskets when I give it gas it wants to backfire and acts like its starving for fuel. 6L Idles Badly after Intake Manifold Gasket Replacement - Spent the day changing intake manifold gaskets on my F150 4. . 0l in it. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. 2 backfire problem - Hi guys, I have a 1999 f150 4. I noticed that the connector on the ignition coil for valve 3 had some corrosion, but after I cleaned Jan 18, 2012 · 1997 - 2003 Ford F150 - Intake Manifold Runner Control (IMRC) stuck open code: P1518 Troubleshooting advice - I need to renew my tags, and last time I checked, I had an O2 sensor error that I've just been putting off. Dec 11, 2014 · 1997 - 2003 Ford F150 - 1998 4. hlvil icfytu uisoe rnjbau ijz wslbur oamo bdacmwua ikcwjk ifbq syc bddynwsv lkj tymbhh grbc