Re: Running lean/misfire. by Chris's FX4 » Fri Mar 25, 2011 8:24 pm. Make sure you probably torque them to 28ftlbs. The 2valves like to spit plugs if not torqued properly. It is possible that your intake manifold could be leaking. 2011 Ford F-150 FX4 5.0L -- 2007 Yamaha VX Cruiser -- 2002 Ford F-150 FX4 (Sold)Causes and Methods to Fix Multiple Cylinder Misfire on Ford F150. The worst condition of exhaust and converters. Faulty plugs. Worst pressure condition in the cylinder. Dirty filters/Fuel filter clogging. Damaged injecting tools. Faulty coils and broken electric wires. Leakage and excessive fuel burn. Low quality of the fuel in Ford F150 cylinders.Check Engine light blinking! 2004 - 2008 F150 - cylinder 5 misfire - I have a 2005 f150 with 96,000 miles. Long story short, last August I was headed to the mountains going up a steep long hill and the engine light come on. once i was over the pass the light went off. During my 4 wheelin' trip it never came back on until I was headed home and...Seemed to have found the problem! 2004 - 2008 Ford F150 - 2006 F-150 5.4L constant misfire fixed!!!! - Ok guys, this is a log of my misfire nightmare. Truck has 122K miles We were driving home from Oklahoma to Dallas Texas and once we hit grapevine the truck started idling VERY bad. We limped home and went to bed.2009 - 2014 F150 - 2014 f150 5.0 misfire please help - Hey guys. Ive got a 2014 f150 with the 5.0. It has a slight misfire. I took it to a shop. He says 3 and 6 have a misfire code. He said it's intermediate so he was thinking a vacuum leak. I had the spark plugs changed last week. Didn't do the coils though. The main...Most engines have a 4, 6, or 8-cylinder engine, where more cylinders typically mean more power. Power is generated by pistons that move up and down while fuel is ignited at very specific times. A misfire typically occurs when the timing of this ignition is off. P0304 indicates that cylinder 4 is experiencing misfires. P0304 Causes1997 - 2003 Ford F150 - Multiple cylinder's misfiring on a 2001 5.4 F150 - hi, i'm looking for alittle help on figuring out what is going on with a 2001 ford F150 with a 5.4L engine with 163.000 miles, i'm looking at buying, the truck doesn't have much power at this point, and misfire's badly, especially when i put it...Sep 19, 2016 · 2009 - 2014 Ford F150 - 5.0 cylinder 8 misfire, need new heads... - I have a 2012 with the 5.0 engine, 158,000km...received some disappointing news this week... cylinder 8 failed compression test miserably ....valves are worn into cylinder head and ford recommends replacing both heads at approx. cost of 10k.....P0356 is a generic OBD II diagnostic code that indicates an issue with the ignition coil "F" (the sixth cylinder). Specifically with the primary or secondary wiring circuits. If your Ford F150 has thrown this code, it will usually be accompanied by P0306. Addressing P0356 should take care of P0306 on its own. P0356 is a relatively straightforward diagnosis and is typically caused by a bad ...In this video we show you a real common cause of a P0308 cylinder 8 misfire on the Ford Explorer 4.6L 3v engines.Permatex Ultra Black is Best to use: https:/...Modular V8 (4.6L, 5.4L) - f150 Nightmare Misfire's in Cylinder 7 and 8 with backfire in engine - Iv never created a forum page before, but I am having a nightmare issue with my 2005 f150 5.4l. It has a rough idle, I am reading alot of misfires on cylinders 7 and 8. Weird If I give it alot of gas I have no low end...2009 - 2014 Ford F150 - 2011 F150 5.0 with the cylinder 8 misfire - First post on here, I have a 2011 f150 with the 5.0 145,000 miles and I got the cylinder 8 misfire. I had read on here about the valve/head issue and took it to a shop to confirm my suspicion. Low compression on cylinder 8. They wanted to replace the...2015 - 2020 Ford F150 - 2016, 5.0 Random Misfire All Cyls - Graphs - This is a compilation of other threads regarding intermittent random, non CEL misfires. 5.0 - 175K, runs great, good gas mileage, smooth idle, lot's of power, fairly quiet. Let me know if further info needed. New plugs swapped locations, COP swapped...Received 7 Likes on 2 Posts. What do I do next- misfire. 2016 F150 5.0 4x4. Was doing 80mph on the interstate and had a misfire and the truck started running rough. gingerly drove it to Autozone and had the code scanned- Misfire cylinder 8. The plugs were changed less that 5000 miles ago. Figured coilpack seeing they are original with 110,000 ...Modular V10 (6.8l) - O2 sensor causing misfire? - 2002 F350 178k miles. I've changed plugs, replaced the #10 COP after getting misfire code for that cylinder, replaced PCV valve, checked elbow and hose. During plug change, broke the clip on #8 that holds the wire to the COP.5 Feb 2024 ... ... FordTechMakuloco•509K views · 27:18. Go to channel · Ford F-150 5.0L - Cylinder 8 Misfire Fix. rust•33K views · 10:26. Go to channel ·...Received 158 Likes on 131 Posts. 1998 f150 cylinder 3 misfire help. I am trying to help a buddy out he has a 98 f150 xlt he has developed a misfire out of the blue it scanned a misfire in cylinder 3 but the check engine light is flashing I'm leaning toward a coil pack or a injector he had oil changed 2 days ago and they replaced his fuel filter .The FIXD wireless OBD2 scanner and free app for iPhone and Android translates your check engine light into plain English so you can rest easy. In this video,...Apr 19, 2022 · Diagnostic trouble code (DTC) P0308 stands for “Cylinder 8 Misfire Detected.”. This means the powertrain control module (PCM) detects that there was incomplete combustion or the absence of combustion in the cylinder numbered “8” in the arrangement of cylinders on the engine. Common causes of the P0308 code include a bad spark plug, a ...P0302 is a code associated with a misfire on cylinder 2. Find all about what P0302 code means, its typical causes, and possible symptoms. ... 2014 F-150 Tutorials; 2011-2017 Camry Tutorials; 2009-2018 Ram 1500 Tutorials; Shop At ... on a Ford V8, the cylinders are numbered 1 to 4 on the passenger side bank and 5 to 8 on the driver side bank. ...Ford F-150 5.0L - Cylinder 8 Misfire Fix. My dad bought this ‘13 Ford F-150 that had a really bad miss in cylinder 8. I diagnosed low compression due to a worn …The Powertrain Control Module (PCM) detects that a misfire is occurring in the 2nd cylinder in the car motor, thereby alerting the engine to set this trouble code. It's a generic code, applying to all OBD-II equipped models. While the P0302 trouble code might be considered generic, the repairs could depend on the make and model you drive.Aug 28, 2011 · 1997 - 2003 Ford F150 - 1998 4.6L Cylinder 8 Misfire - Need Advice - I purchased a 1998 4.6L F150 with a 180,000 miles on it last week. I got a great deal on it, maybe too good looking back. The issue I am working on now is a code PO308 Cylinder 8 Misfire. The truck has not had proper maintenance that I could tell so...A 4-cylinder car loses 25% of its power from a misfire while a the V10 Triton in a Ford heavy-duty truck, for example, only loses 10%. Regardless of what size engine you have, misfires almost ...2004 - 2008 F150 - 2006 ford f150 misfire/poor accelleration fixed - It seems alot of people are having the same problem I had which I have resolved. So I thought it would be a good idea to post this to possibly save people some money. Mine started out as a misfire problem which I first changed the plugs.Reason: Added additional detail. 2004 - 2008 Ford F150 - 5.4 misfire 5,6,7,8 - Hey guys Im lost here. Bought a 2007 5.4 3v it had number 7 rocker failure on both intake valves. I replaced cam, rockers, phazers, chain, guides, followers,vvt, cam shaft sensors, crank sensor and plugs new oil and filter all motorcraft.2 Nov 2019 ... Not really random as is misfiring on all cylinders on bank 1 due to partially plugged cat convertor. May have been caused by faulty O2 ...I have a 2017 F150 5.0L Roush Supercharger with 88K miles. Problem started with the Driver side cat giving me a P0430 code. After about a month I was able to replace the driver side cat and about a week later replaced the passinger side cat. Best to do both. I am getting a P0300 ( Code P0300 stands for “Random or Multiple Cylinder Misfire ...This article will therefore deal with code P0300 as it applies specifically to Ford vehicles. OBD II fault code P0300 is a generic trouble code that is defined as "Random/multiple cylinders - misfire detected" and is set when the PCM (Powertrain Control Module) detects misfires on random or multiple cylinders.The P0308 code means that cylinder #8 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #8. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.Code Tech Notes. The P0308 code means that cylinder #8 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #8. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.1997 - 2003 F150 - 2001 F-150, 5.4 cylinder 8 misfire help - So a few days ago, I have a cylinder misfire on my 5.4. I get it to my buddy's place, he hooks up his code reader, and it's cylinder #8. We run to the parts store, grab another coil pack, swap it out, and we're still getting the same code for a misfire. He...2007 Ford F150: 5.4 V8..a misfire..cylinder..change spark plugs - Answered by a verified Ford Mechanic. ... I have a 2007 Ford F-150 5.4 V8 with 106500 miles had a mis fire in the engine took it to dealer though it was spark plug, because the code said cylinder #8 was mis firing. They checkit out and changed spark plugs.by code58 » Sat Jun 06, 2009 6:13 am. jakerod256 wrote: Greetings, My 2004 F150 5.4L (90,000 miles) misfires when moving from coasting or decelerating to accelerating. The misfiring continues until the auto transmission downshifts to lighten the engine load. This occurs at all speeds as long as the transmission is in highest gear with OD engaged.Jul 7, 2020 · This video will show you how to fix P codes 300 through 308.After changing everything externally related to #8 cylinder, it still sent "misfire code." Compression check revealed #8 to be about 30psi weaker than other ...Chances are that the spark plug hole got water in it and is causing the problem. You can take the coil out with out removing the fuel rail, just rotate it. Don't pull the plug until you are sure the hole is free of water. 1997 - 2003 F150 - 2002 F150 4.6 Cylinder 8 Misfire - My buddy has an 02 f150 Screw 2wd and after a day of mudding he had a ...Intermittent shaking like misfire but no codes. The truck seems to run and drive fine but there are times when I feel a high frequency shaking. It is not related to vehicle speed or engine speed. This morning it got bad so I let up on the pedal (cruising at 40mph) and it went a way. Pushed the pedal back down and the shaking started again.This occurs with surprisingly little amount of moisture present. Remove the spark plug and look for wetness below the hexnut and on the threads. Completely dry the spark plug. Dry the inside and outside of the spark plug boot. If available blow compressed air down into the cylinder 4 plug hole to dry it off.2004 - 2008 Ford F150 - 5.4L Random Misfire Under Load - Hey all, I know this topic has been discussed before but I need some help. I have a 2005 Ford F150 Ext Cab 5.4L 3v 4x4 with 149k on it. At approximately 45-50mph, in overdrive, if i lightly accelerate, the engine misfires and the truck...Here's a quick rundown of the most common issues that can lead to misfires in vehicles equipped with the 5.4 Triton engine: Faulty Ignition System: A weakened ignition system can lead to inadequate spark plugs firing, resulting in misfires. Worn Spark Plugs: Over time, spark plugs can become worn, leading to improper combustion and engine ...Code says misfire on cylinder 8 and running lean on bank 2. I just replaced all 8 plugs not even 2,000 miles ago. I believe the lean code is due to an exhaust leak where the exhaust manifold connects to the pipe, its only about 3" in front of the O2 sensor because ive had that problem before on the oposite side and i was able to fix it.Maintenance Shop - Cylinder #5 and #8 misfire issues - Recommendations Please - Ford F-150 4x4 Supercrew FX4 Miles - 84,000 Engine: 5.4 Triton V8 So I was driving down the freeway and booked it in the fast lane going like 80mph to pass a semi. I then noticed that my engine was feeling/sounding like it was off tempo,...2004 F-150 Misfire. I need some help. I own a 2004 5.4L 3V with 119,000 miles that has developed a mis in cylinder 1. The miss is only intermitent and only at idle while in drive, always at a red light. The pending code is P0351. After I got the code the first time, I changed the COP. A week later the mis came back.by v-king » Tue Sep 02, 2008 4:27 am. I've got a problem with rain water/carwash causing Cylinder #8 misfire. According to my mechanic it's a fairly common problem on a 98 f-150, however I couldn't find a single post with this issue. This is the second time it's happened in the last two moths.1. 12-26-2009 04:45 PM. 1997 - 2003 F150 - Bad misfire on cylinder - 1998 Ford F150 5.4L Triton 4x4 225,000 mi I was driving it the other day and it started hesitation on me like a misfire. The check engine light was flashing on me. I went and pulled a code and all the code was for an evaporation problem.1952 Ford F-Series Trucks - For Ford's 1952 F-Series line of trucks, production was down but sales were good. Find photos and specifications for 1952 Ford F-Series trucks. Advertis...Feb 26, 2004 · Anyone else having trouble with a misfire problem in their 4.6 V8 Triton., About 3 months ago my motor started to run rough at idle and the engine light came on, brought it to a Ford dealer and he said it was a misfire code on clynder 8, he changed all the plugs with Platium plugs and new platium wires. 2 days ago the engine started running ...Cylinder misfire... Help please :) 16 posts • Page 1 of 1. FordsBeatChevANYDAY! Regular Member Posts: 30 Joined: Wed Oct 14, 2009 3:17 pm Truck: 2001 F150 Supercab Location: Stockton, MN. Cylinder misfire... Help please :) ... Truck: 2001 Ford F-150 XLT Supercrew. Re: Cylinder misfire... Help please :)The first thing to know is that you will get a code that will signify you have a cylinder 4 misfire problem. The code will be P0304. If the coil packs, plugs, or wires need to be replaced, check and test the ignition system components close to the cylinder. One of those three items is the issue. In that case, you must switch the coil pack, wire ...2009 - 2014 F150 - 2014 f150 5.0 misfire please help - Hey guys. Ive got a 2014 f150 with the 5.0. It has a slight misfire. I took it to a shop. He says 3 and 6 have a misfire code. He said it's intermediate so he was thinking a vacuum leak. I had the spark plugs changed last week. Didn't do the coils though. The main...May 2, 2014 · All times are GMT -5. The time now is 01:20 AM. 1997 - 2003 F150 - 1997 f150 4.6, misfire on both #1 and #8 - Hello everyone, I've got a 97 f150 that has randomly started missing over the last month. It has started to get more frequent and codes are showing a misfire on both cylinder 1 and 8. Both of these cylinders run off the same coil pack.To diagnose the P0301 2000 Ford F150 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.2009 - 2014 F150 - 2014 f150 5.0 misfire please help - Hey guys. Ive got a 2014 f150 with the 5.0. It has a slight misfire. I took it to a shop. He says 3 and 6 have a misfire code. He said it's intermediate so he was thinking a vacuum leak. I had the spark plugs changed last week. Didn't do the coils though. The main...Maintenance Shop - Engine misfire? Advice please... - Hello all, I am new to the forum...I drive a 2005 F150 with a 5.4L V8 in it...it has roughly 58k miles on it... Today while driving home I was behind someone and went to pass them...for whatever reason they thought it would be funny to speed up and try to prevent...Try running a simple vacuum gauge test and see if it indicates any engine malfunctions. 1997 - 2003 Ford F150 - Cylinder 2 misfire trouble diagnosing - Originally had a cylinder 8 misfire code, so went ahead and changed all plugs, wires, and coil pack for that side of motor , only because guy at auto parts only gave me 1 instead of both like …2009 - 2014 Ford F150 - 2014 5.0 misfire - Hello, i have a 2014 f150 5.0 that developed a misfire code for cylinder 8 about 3 months ago. At the time I swapped coils to see if the code changed. It stayed the same and I progressed to change the spark plugs next and the misfire code came back. I took it to 2 shops and...2004 - 2008 Ford F150 - Cylinder 7 misfire - 120k miles. Running rough - found a cyl. 7 misfire code. Bought a spark plug and ignition coil. When I pulled the coil I found that the plug cavity was semi-full of water. wtf kind of design is that? Vacuumed it out and blew it dry with compressed air, then drove it around...Cylinder 8 Misfire Detected. What the P0308 code means. The P0308 trouble code means that the powertrain control module (PCM) has detected an issue with the ignition of the …1997 - 2003 F150 - 1998 F150 4.6L misfire - Bought the truck about A year ago and have been trying to chase down a misfire issue as long as i've had it. At an idle the whole truck shakes, but runs fine while driving. It seems worse warm but it may just be because the idle is higher when its cold.Possible causes of code P0304. There are several potential causes for code P0304 in a Ford: Ignition system issues: Faulty spark plugs, ignition coils, or ignition wires can lead to a misfire in cylinder 4. Fuel system problems: Issues with fuel injectors, fuel pressure, or a clogged fuel filter can cause an imbalance in the air-fuel mixture ...2011+ Engine Related Questions - 2012 F150 5.0 Misfire - I recently bought a 2012 F150 5.0 that I knew had a cylinder 8 misfire. As part of my diagnosing, I did a compression test and found #8 at 60, and the rest around 150. A leakdown test shows the leak is from the intake valves. The truck hardly has enough power to...The P0307 code means that cylinder #7 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #7. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems. There is a Factory ...If you’re in the market for a Ford F150, you’re in luck. This popular truck is known for its durability, versatility, and impressive performance. Whether you need a powerful workho...2004 F-150 Misfire. I need some help. I own a 2004 5.4L 3V with 119,000 miles that has developed a mis in cylinder 1. The miss is only intermitent and only at idle while in drive, always at a red light. The pending code is P0351. After I got the code the first time, I changed the COP. A week later the mis came back.Code Tech Notes. The P0308 code means that cylinder #8 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #8. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. ... F150 4.6 triton misfire 8 cylinder, repleace sparkplug dosnt chaned, any help?? Top. moelll Regular Member Posts: 59 Joined: Sun Jun 17, 2012 5:04 pm Truck: 2006 F-150 FX4.Check the breather ontop of the valve cover that runs to the top back of intake manifold, if the hose came loose it could cause a misfire, i've had that happen. If a vaccum line came off elsewhere it could be causing an issue with fuel air mixture and cause a misfire. Check your coil pack connections make sure they are still good and they aren ...swhite005. 1997 - 2003 F150. 6. 12-19-2005 07:42 AM. 1999 to 2016 Super Duty - Engine misfire cylinder 5 and now 7/8 - Alright so I had the worst luck these passed couple days, truck started running like crap 3 weeks ago (misfiring), long story short FINALLY got the p305 code, So I popped on a coil pack on cylinder 5, but when I took the coil ...P0306 is a generic diagnostic trouble code (DTC) defined as "Cylinder 6 Misfire Detected.". Your car's Engine Control Module (ECM) or Powertrain Control Module (PCM) registers this code when it detects a misfire on cylinder number 6 of your engine. Vehicles with internal combustion engines move when they ignite the air and fuel mixture ...Misfire on acceleration followed by the emissions light. I also had the battery light coming on sometimes. This only happened in cold weather. As it turned out the alternator was shorting out the battery and the coil packs. Final tally was 5 new coil packs, all 8 spark plugs, new battery and the alternator. $1300.00.I have a problem with #8 cylinder misfire, which is constant. I have occasional misfires on #5, #6, and #7 cylinders. I cleared the codes and did a spark test on #8. I checked for codes. None. I then drove the truck and it ran normal. After about a mile the check engine light came back on. 5,6,7,8 showed misfire.Re: 05 5.4 L Misfire Cylinder 6. by job1000 » Fri Nov 05, 2010 11:11 am. Sorry I left out the main part. The injector did solve my initial problem. Unfortunately from running the truck while dumping to much gas throw it also killed one of my cats. I found a bolt on replacement on ebay for $300 and now trucks runs better.7. 12-31-2006 11:39 AM. 1999 to 2016 Super Duty - 5.4 missing while under load - I have a 2007 super duty with a 5.4 it has 93000 miles on it. When you start up a hill it will shuter like it is missing but check engine light is not on could this be a coil and how would check for a bad coil if check engine light is not on to use meter. thanks...2004 - 2008 Ford F150 - Misfiring on cylinders 3,4,7,8 - Hello, I have a 2007 Ford f-150 5.4L 3v and while towing a very light trailer I got the check engine light flashing and the truck started to shake while trying to maintain speed. The vibrations will go away at higher RPMS (2400+) but any lower it will shake...If you're in one of these situations, luckily Ford vehicles with OBD-II have a special cylinder-specific misfire count available inside part of the OBD-II specification called mode $06. Modes are just different sections of the OBD-II specification (SAE J1979) that deal with different functions.Feb 21, 2024 · Inspect the wiring and connections: Faulty wiring or connections can also cause misfires. Check the wiring and connections in cylinder 8 and repair or replace them if necessary. Check the compression: Low compression in cylinder 8 can also cause a misfire. Check the compression in cylinder 8 and repair the engine if necessary.Sep 11, 2018 · P0302 in the Ford F150 is a common OBD II trouble code. It indicates that your truck’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your F150’s check engine light to come on, you shouldn’t drive your truck at all. Repairing P0302 should be considered ...2004 - 2008 Ford F150 - Cylinder 5 Misfire, Have Tried Different Solutions, 5.4 3v - Good Morning everyone, I have a 2004 FX4 with the 5.4L 3 valve. It has a Cylinder 5 misfire (Code P0305). Here's the story: Bought it off a dealer a month ago. Drove it to Riverside and back into the Central Valley with no major...Nov 5, 2021 · My dad bought this ‘13 Ford F-150 that had a really bad miss in cylinder 8. I diagnosed low compression due to a worn intake valve. This was the fix.1997 - 2003 Ford F150 - misfire, which cylinder? - I have a 2000 f150 with the 4.6 v8. It has a misfire which I think is the cop. I was told that some obd scanners can read the misfire and let me know which cylinder it is. I bought the autel 539. went to onboad monitor-test 53 which counts the misfires. Didn't work!...The code was for a cylinder #2 misfire. It seems to have gotten worse in the last few days. The check engine light stays on and will start blinking as I am driving it indicating the misfire. I am going to pull the plug and look at it. ... Joined: Fri Jan 20, 2017 8:49 pm Truck: 2005 Ford F150 Lariat. Re: 2005 F150 5.4L Cylinder #2 misfire.2009 - 2014 Ford F150 - 5.0 cylinder 8 misfire, need new heads... - I have a 2012 with the 5.0 engine, 158,000km...received some disappointing news this week... cylinder 8 failed compression test miserably ....valves are worn into cylinder head and ford recommends replacing both heads at approx. cost of 10k.....A clogged converter can cause all manner of problems, and a quick way to diagnose is to run the engine without an upstream oxygen sensor. 2009 - 2014 F150 - 2011 f150 3.7 misfire - 2011 f150 with 144000 miles. V6 3.7 bought the truck with number 3 coil,pack no firing. Replaced coil pack and plugs.now right hand side all cylinders are not firing ...P0302 in the Ford F150 is a common OBD II trouble code. It indicates that your truck's second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it's bad enough to cause your F150's check engine light to come on, you shouldn't drive your truck at all. Repairing P0302 should be considered .... 2009 - 2014 Ford F150 - 2014 5.0 Misfire - Hey there, longtime li2009 - 2014 F150 - 2014 f150 5.0 misfire pl 2004 - 2008 Ford F150 - Cylinder 7 Misfire - Whats going on guys, I'm new to the forum but heres my issue. So I have a 2004 F150 V8 Heritage edition. It was originally natural gas but has since been converted to unleaded. So a few weeks back I started getter a cylinder 7 misfire obd code. Since then I've replaced the... Just had my 2012 F-150 5.0 in the shop for brakes, had them I too have the problem although with cylinder #3 on an '97 F-150 4.6L V8. I have changed the plugs so far, cleared the engine light and it remained off for a week and is now lighted again. Haven't taken it anywhere but to Autozone to read the code and clear the light. Any ideas? When started it sounds hard like the engine misses and then idles ... Code Tech Notes. The P0308 code means that cylin...
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