Misfire cylinder 8 ford f150

Jul 10, 2024
28 Jan 2018 ... If a cylinder is more than 10% different in compression than the other cylinders, then it's almost certainly a blown head gasket ( ....

P0307 is a fairly common trouble code with the Ford F150. It's and OBD2 code and means that a misfire has been detected in the 7th cylinder in the firing order. You should only be seeing this code if you have an engine with at least 7 cylinders. So, it's mostly a code for V8 engines. P0307 is typically caused by bad spark plugs, plug wires ...Received 137 Likes on 81 Posts. 2018 5.0 Misfires. Not 100% happy how my new V8 is running going down the road. And the silky smooth idle now has a brief slight roughness on occasion.No MIL illuminated. Took a short trip in it this morning, about 40 mi, and Torque Pro is showing random misfires in several cylinders.P0308 is a diagnostic code that indicates an engine misfire on cylinder 8 in a Ford F150. Common causes of this misfire include a faulty spark plug, worn spark plug wires, a faulty fuel injector, a vacuum leak, an intake manifold leak, a faulty ignition coil, or an engine mechanical problem.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.2002 5.4 L f150. Getting a misfire in a cyl. Code says Cyl 1. Run truck and disconnect/reconnect coil connectors 1 at a time just to make sure it's right. It is. It's due for new plugs anyway, so I replace all plugs. still misfiring. Replace all coils because I have extras laying around, still misfire. so I replace the injector for cyl 1 because I don't have extras and injectors are ...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. $1300.00.2007 f150 4.6 misfiring need help please. hi I am new here. I am having trouble navigating to find if anyone else has had the same issues im having. ok I have 2007 F150 2WD 4.6 V8 140K miles. the truck is misfiring and has a lack of power. I had taken the truck to autozone to read the trouble codes due to having a check engine light.2013 f150 5.0 Misfire. So I've had a 2013 f150 for about 6 months now. It's always had a random misfire when idling and sometimes when driving on the interstate. On the interstate its bad enough that it feels like the transmission slips pretty bad for about a second or so. I've had the cold start update done and I'm about to check the spark ...2002 F-150 Misfiring & rough idle. I recently picked up a 2wd 2002 F-150 with a 4.2l V6 that has just over 300k miles and need some help. The CEL is on and I'm getting P1131, P1151, P0316, P0305 and an occasional P0301. It has a very distinct misfire from around 1,000 rpm and smooths out between 1,500 & 2,000 rpm, the idle rpm occasionally ...97' #2 and 8 cylinder misfire. by jkjenkinsiv » Mon Dec 12, 2005 9:19 pm. I have a 97'F-150 w/a 4.6L. Truck has 130,000+ miles. The check engine light is on steady and some times it starts flashing. The truck intermittenly runs very rough, no power. Went to autozone to pull the code and they said it was number 2 and 8 cylinder misfire.2013 f150 5.0 Misfire. So I've had a 2013 f150 for about 6 months now. It's always had a random misfire when idling and sometimes when driving on the interstate. On the interstate its bad enough that it feels like the transmission slips pretty bad for about a second or so. I've had the cold start update done and I'm about to check the spark ...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.In this video we show you how easy it can be to diagnose a misfire on a modern engine with the right tools.Latest Ford Parts:Ignition Coil (2011-2016)-https:...Re: 2006 Ford F-150 5.4 ; Cylinder Misfiring. by Big Screen D » Thu Apr 21, 2011 11:56 pm. Double check that the COP is fully mated to the plug. If no go, pull the plug. It is either a bad plug, cracked porcelain, not tight, has liquid in the well, or has to much anti-seize on the electrode shield and has fouled the plug. mmhyson.Mar 20, 2008 · 03-15-2010 08:48 AM. 9. 08-23-2009 08:45 PM. Tags. 1997 - 2003 F150 - Cylinder misfire '98 F150 4.2L - One more question guys: I have been pulling a code for a little over 1 year now thats showing a Cylinder #2 misfire. I don't notice the miss, so its not missing hard. I pulled the plugs, regapped them, then replaced them, with no change.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 ...2012 F-150 Platinum Ecoboost 108,000 mi Intake and chipped. ... Then, if the misfire continues, swap the the coil of the misfiring cylinder with another cylinder. If the misfire follows the swap, you can assume the coil is the source. ... F150Ecoboost.net is the best Ford F150 Ecoboost Forum with discussions on 2011+ F150 Ecoboost Trucks ...Received 4 Likes on 2 Posts. Misfire 1995 f150 351w. Ive posted a couple of times on this issue and im (almost) completely stumped at this point, ill lay everything out for you. Its have a consistent misfire/buck while accelerating, Speed doesn't variate it, and it will happen lightly at an idle. Gas mileage is better with new injectors and ...I have a 2006 f150 5.4 l 3 valve that keeps misfiring on cylinder 4 at high RPMs I have replaced all spark plugs and COP using oem parts along with using fuel cleaning and oil treatment. Has anyone heard of this or dealt with this first hand. I have spent too much money already to keep playing this guessing game. jd61.2004 - 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.9 Dec 2022 ... 2007 F150 5.4 running rough. Had a P0305 cylinder 5 misfire code. Checking the misfire data showed cylinder 5 as the only cylinder that's ...1995 Ford F150 4.9L 4WD, Manual - suddenly misfire on cylinders 1 and 4, lean codes, strong fuel smell and lots of fuel - Answered by a verified Ford Mechanic ... I …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 …All times are GMT -4. The time now is . 2009 - 2014 Ford F150 - Cylinder misfire code on 2013 5.0 - I have a cylinder misfire code on cylinder 4. I've changed the coil pack as well as the spark plug. still showing misfire cylinder 4. I switched the coil from #3 to #4 and cleared it and now it still shows a misfire #4 cylinder.Nov 9, 2020 · 2009 - 2014 Ford F150 - 2014 5.0 Misfire - Hey there, longtime listener, first time caller. I have a 2014 F150 5.0 with about 120,000 miles on it. Starting around March of this year I got a check engine light (P0304) for a misfire in cylinder #4. So I went out and bought 8 brand new motorcraft coils and the problem...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 …1997 - 2003 Ford F-150. Looking for recent topics? can 02 sensor cause misfires and poor engine running? 8 posts • Page 1 of 1. skipa New Member Posts: 7 ... p0171 system to lean bank 1/ p0300 multiple cylinder misfire detection/ 0302 cylinder 2 misfire/ 0303 cylinder 3 misfire/ and forget code number but said 02 sensor heater circuit ...Jul 1, 2020 · In this video we show you what to check when you have hard to diagnose misfires on this engine.These are the Parts and Kits I Recommend:2004-2014 Engines Lat...Nov 6, 2019 · Misfire at idle. 13 f150 5.0. Constant cel when. Idling. Or cold start. I’ve changed plugs and coil pack. Every once in a while I’ll get a cylinder 4 misfire but constantly get cylinder 8 misfire. When the truck warms up driving on Highway it never gives me a cel but when I idle for too long it will.Misfire in cylinders 1 & 3. Any help would be appreciated. I have a 2016 f150 3.5 ecoboost, 108,000 miles. Changed timing chains, tensioner, guiders, cam sprokets. truck ran perfect before I did this, just did the work because the front plate was leaking oil. With everything back together, the truck ran fine in the garage for 10-15 mins.Join Date: Oct 2017. Posts: 555. Likes: 255. Received 81 Likes on 64 Posts. Come on....'18 5.0 Cyl 1 and 6 misfire. Anyone with a new f150 have any similar codes? I just got mine a month ago. Yesterday (cold out) got a cel. Checked codes today and it was a Cylinder 1 and 6 misfire (P0301b and P0306) .1997 - 2003 F150 - 2000 F-150 5.4 Misfire Help! - Hello all, Let me first of all thank you all in advance for advice I have recieved over the past month on my trailer charge line problem. I am now having another problem, and am getting frustrated with my newly aquired ford truck. I washed my truck under the hood using...6 Fixes for Your Misfiring Truck. A misfiring engine robs you of power, and fuel economy, not to mention all the unburned hydrocarbons polluting the air. Check these simple things and be back running on all cylinders in no time. December 28, 2016. NEXT. BACK.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 I had asked, anyways, changed everything and ran worse than...Nov 28, 2023 · 05-28-2008 03:21 PM. Reply. /. 5.0L Coyote - Hi all, 5.0 misfire problems - Have a 2014 F150, has developed a misfire on bank one (P0300). Took to dealership, was told to change plugs. I did but did not help. Another ford mechanic said to change injectors, that didn't help either.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 CausesI have the message after an issue this morning that Cylinder 8 misfire detected on my 2009 F150... the local mechanic - Answered by a verified Ford Mechanic ... I had the plugs changed on my 2004,ford,f-150, x-cab, Vin 1FTPX145X4NC53454 and my bill was $1062.91. The bill indicated the had to extract 5 plugs. The labor charge was 688.75.I had a 03 expedition that did that, wound up being a coil, I just changed them all. 1997 - 2003 Ford F150 - 2002 5.4 ltr Triton mis-fire at idle - I have a misfire at idle and NO CHECK ENGINE LIGHT. I have sprayed carb cleaner around top of engine when it was cold to see if I had a vacuum leak and did not notice any difference in the rpm's.You are correct should be 42-45 psi normally. 1987 - 1996 F150 - 5.8 Misfire - I have been having a misfire problem for a while and it seams I'm not alone. I had a slight mis at idle and then at partial pedal. Yesterday i changed out my wires for the Ford Racing parts and started the truck.So after I extracted the plug from #8 cylinder and installed a new plug I cranked the truck and it was idling very rough and had a terrible miss around 1200rpm. I pulled the codes and got several misfire codes and ignition coil faults on #5,6 and 7 cylinder. Popped in 3 known good coils in these 3 cylinders with no difference.I had a 03 expedition that did that, wound up being a coil, I just changed them all. 1997 - 2003 Ford F150 - 2002 5.4 ltr Triton mis-fire at idle - I have a misfire at idle and NO CHECK ENGINE LIGHT. I have sprayed carb cleaner around top of engine when it was cold to see if I had a vacuum leak and did not notice any difference in the rpm's.6 Apr 2016 ... How to determine which cylinder is misfiring when the check engine is NOT on ... 19K views · 8 years ago ... ... Ford F150 Truck Looses Power & Hard ...Maintenance Shop - 2013 XL #8 cylinder misfire - Greetings! New F150 owner here, and I'm starting off with a rough patch that came with the vehicle. I have a 2013 F150 XL v8 5.0 and am getting a misfire code on cylinder #8 (random, not consistent). I have read several posts about similar issues and am trying to narrow...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...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...1997 - 2003 Ford F150 - P0304 Misfire (Don't know what more to do) - I have a question in regards to a 1997 Ford F-150 (f150) V8 4.6L with misfire code P0304. ... (P0304; misfire cylinder 4). So, I picked up an injector; but before installing, I swapped the old 3 and 4 injectors with the old 1 and 2- and vice versa. Drove for 20 miles and the ...6.2L Misfire cylinders 4 & 7. Has anyone had cylinder misfire codes and had a sucessfull repair. My 6.2L, 12,000 miles towing has experienced #4 & #7 misfires. It's build date was 8/2010 and falls within the parameters of TSB 10-25-7. According to the servicing Ford dealer the Tech has examined the Rockers/Cam shafts and states that they look okay.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.As the title said, I have a 98 F150 4.2L with code P0301 Clynder 1 Misfire. This is what I have done so far. New plugs, coil pack, plug wires, TPS, EGR, EGR Vaccum control regualier, DMCP, canister, all of these parts are new and was bought from the ford place. Have taken the egr value, and egr value bracket off to see if carbon blockage was ...Received 7 Likes on 7 Posts. Dreaded P0307 - Cylinder 7 misfire problem. I have a 2013 F150 5.0 with 160,000 miles on it currently. So I started having a slight misfire about 3 or 4 months ago. It didnt throw a code, so I just changed out the plugs and everything went back to normal. Then about a month later I got an intermittent P0307 code.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:/...While swapping coils around make sure you do not have water down in the spark plug area. This may be just a water issue. Maintenance Shop - Multiple Cylinder Misfire - Gave the truck some gas on a wet road and the tires were spinning. The check engine light immediately started flashing and felt the truck real sluggish.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.....I have a 2018 5.0L. At about 45k miles I began experiencing misfire issues, check engine light on. Took it to a dealership and they replaced my spark plugs. Problem solved. Fast forward at 90k miles and I started experiencing the same problem again yesterday. Not sure what to think about it, doesn’t seem normal.They should have been able to tell you which cylinder, they just felt that they could be help liable. Either way - it's probably #3. I've heard others mention that puddles, deep water, etc splashing up and getting into #3 and causing misfire issues.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...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 ...1997 - 2003 Ford F150 - P0304 Misfire (Don't know what more to do) - I have a question in regards to a 1997 Ford F-150 (f150) V8 4.6L with misfire code P0304. ... (P0304; misfire cylinder 4). So, I picked up an injector; but before installing, I swapped the old 3 and 4 injectors with the old 1 and 2- and vice versa. Drove for 20 miles and the ...1 / 1. 1997 - 2003 F150 - 2003 F-150 Misfire help! - I have a 2003 5.4L V8 F-150 (2WD) with 111,000 miles. I had a cyl.4 misfire - have replaced the coil pack, spark plug and fuel injector in the last two weeks. This morning when I started up it was pretty rough and CEL came back on. On the way into work it became apparent...General F150 Discussion - Low compression on cylinder 8 on stock 5.0. Any thoughts? - I have 70 pounds of compression on the number 8 cylinder in my 11 f150. Daily driver, bone stock 5.0 liter. ... 2014 Ford F150 > 2011+ Engines. section more helpful/appropriate than General F150 Discussion posts..Exchange the COP from Cylinder 1 to Cylinder 5, then drive it til you get a CEL and pull the code. If it shows up on Cylinder 1, it's a bad COP. If it stays on Cylinder 5, check the connector and pull the plug to check it. If both are OK, then it's most likely the Fuel Injector. I'd do it myself first.Mar 23, 2018 · 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...2004 - 2008 F150 - 5.4 randomly misfiring - Hey guys, great looking forum you have here. I have a 2005 5.4 F-150 I am working on for a customer and am looking for a second opinion as to what the problem with it might be. First off it came to me on a rollback because the owner tried to replace his plugs after he...11 Feb 2017 ... Today we have a 2001 Ford F-150 Pick up truck with a check engine light on. In this video we will used our MaxiScan OBD2 Code Reader to find ...1997 - 2003 Ford F150 - 1998 4.6 liter misfire #5 cylinder - i need advice on an intermittent problem. truck is a 98 f150 4x4, 4.6 liter, automatic, 131,000 miles. have had an on-again/off-again misfire since 11-08. the c.e.l. has only came on two times for the problem. once in 11-08, and once on 02-12-09. always...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 ... drove for 1 week, same misfire Cylinder 4. Had compression checked followed by changing the fuel injector, Cleared code, drove it for 8 days, same code shows up. Finally changed the coil on ...Misfire in cylinders 1 & 3. Any help would be appreciated. I have a 2016 f150 3.5 ecoboost, 108,000 miles. Changed timing chains, tensioner, guiders, cam sprokets. truck ran perfect before I did this, just did the work because the front plate was leaking oil. With everything back together, the truck ran fine in the garage for 10-15 mins.Decoding the P0302 Code: The P0302 code specifically indicates a misfire detected in cylinder 2. Modern vehicles employ advanced engine management systems that monitor individual cylinder performance. When the system detects combustion inconsistencies in cylinder 2, exceeding a predetermined threshold, it triggers the P0302 code.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...May 14, 2015 · What happens is unmetered air enters through the manifold gaskets while the engine is cold causing a vacuum leak around the ports for cylinders 7 or 8. As the engine warms the seal improves. A scan tool with fuel trim data could confirm this. Modular V8 (4.6L, 5.4L) - 2009 F150 Cylinder 7 & 8 misfire issue.Mar 20, 2008 · 03-15-2010 08:48 AM. 9. 08-23-2009 08:45 PM. Tags. 1997 - 2003 F150 - Cylinder misfire '98 F150 4.2L - One more question guys: I have been pulling a code for a little over 1 year now thats showing a Cylinder #2 misfire. I don't notice the miss, so its not missing hard. I pulled the plugs, regapped them, then replaced them, with no change.All times are GMT -4. The time now is . 2009 - 2014 Ford F150 - Cylinder misfire code on 2013 5.0 - I have a cylinder misfire code on cylinder 4. I've changed the coil pack as well as the spark plug. still showing misfire cylinder 4. I switched the coil from #3 to #4 and cleared it and now it still shows a misfire #4 cylinder.Ford Truck Enthusiasts Forums. Super Duty/Heavy Duty. 1999 to 2016 Super Duty. 6.8L V10 misfire. 1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines. Sponsored by:

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That 2009 - 2014 Ford F150 - 5.0 Misfire P0306 - Hi All I have a 2012 Screw with the 5.0L, have 56000 miles. At around 50000 my check engine light started coming on showing a code of P0306 #6 cylinder misfire... Now my previous truck was a 2006 Scab 5.4 so I know about misfires.2004 - 2008 Ford F150 - HELP!!! - 2004 F150 4.6 misfire #2 and #5 - The truck has a check engine light, service brakes and the codes: random misfire, #2 misfire, #5 misfire. I have tried swapping coils and the misfire stays the same. I have swapped plugs and it stays the same.If you’re in the market for a used Ford F150, it’s important to know what to look for when searching for one near you. The Ford F150 is one of the most popular pickup trucks on the...

How 6.2L V8 - 2013 6.2 strange misfire problem - 2013 F350 superduty 6.2 uatomatic transmission. I have a misfire code on cyl 8 that happens only when the engine is first started cold. i can clear the code and will be fine the rest of the day or until the engine gets cold from sitting. i have replaced all the plugs and...Join Date: Oct 2017. Posts: 555. Likes: 255. Received 81 Likes on 64 Posts. Come on....'18 5.0 Cyl 1 and 6 misfire. Anyone with a new f150 have any similar codes? I just got mine a month ago. Yesterday (cold out) got a cel. Checked codes today and it was a Cylinder 1 and 6 misfire (P0301b and P0306) .

When Code P0308 2003 Ford F150 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.In this video we show you what to check when you have hard to diagnose misfires on this engine.These are the Parts and Kits I Recommend:2004-2014 Engines Lat...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.…

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54th street scratch grill and bar photos Modular V8 (4.6L, 5.4L) - 2006 5.4 Lariat Cylinder 5 and 6 misfire and passenger bank running lean - Hello, I literally just joined this forum in the past hour. I am a Senior at NCSU and just purchased my first truck on my own this past December. Its a 2006 F150 Lariat with a 5.4l and 84k miles. A few weeks back it... snowdrop flower tattoonoaa marine forecast sandy hook They should have been able to tell you which cylinder, they just felt that they could be help liable. Either way - it's probably #3. I've heard others mention that puddles, deep water, etc splashing up and getting into #3 and causing misfire issues. hercules graduation caphenry ford optimeyes dearborn reviewssarah and keith dr phil update There are many issues that can cause engine misfires on cylinder 4, resulting in a P0304 code. The most common cause of a P0304 trouble code is a faulty ignition coil or spark plug. Vacuum leaks or a faulty fuel injector are two other possible causes. Categories: OBD Codes. sdn vanderbilt 2024 The P0305 code stands for "Cylinder 5 Misfire Detected," which means the powertrain control module (PCM) has counted enough misfire events on cylinder 5 to store the misfire code. Possible causes for the P0305 code include issues with the ignition system, fuel system, or engine mechanical problems. Symptoms of the P0305 code include an ... h e b pharmacy de zavalalds ward lookup1020 youngs road suite 110 I have a 2010 Ford F-150 truck with a 5.4L V-8 engine with about 130,000 miles. Recently, upon cold starts the engine ran very rough, missing, initially. After 3-4 minutes of warm up it seemed to be running normal. The engine light was always on when this occurred. Took it into the shop. Diagnosis was that cylinder # 8 was misfiring. They ...