Misfire cylinder 8 ford f150

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.

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.....About a week ago my F-150 4.6L began to skip and run rough. It shakes a lot when it's doing this, but the problem is intermittent. Sometimes it does it a lot, then other times it seems to run on all cylinders. Unfortunately I cannot identify any 'trigger' that might be causing this problem. Sometimes it starts from cold and runs fine then the ...2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck. help diagnosing low compression in cylinder. Reply Subscribe ... Might be something as simple as fuel wash down on that cylinder do to damaged plug and misfire. Im sure you checked head gasket. While the head is off might want to look at valves and seats.Aug 28, 2011 · Re: 1998 F150 4.6L Cylinder 8 Misfire - Need advice. by ArcherDude » Sun Aug 28, 2011 8:49 pm. I would pull number 8 plug again and see if it has more black gunk on it. If it has Black gunk on it then it could be a bad valve seal. This would allow oil to run into the cylinder and put black gunk on the plug.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.

2015 - 2020 Ford F150 - 2019 F150 Misfire - I have a 2019 XLT 5.0 coyote that is having misfire in cylinder 3 and 4 with loss of HP and poor gas mileage. There is no check engine light and no code when I hook up a scanner. It used to feel like driving a sports car with the responsiveness and pickup, but now feels slow...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...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 ...The oblong cylinders were mainly 3 and 4. Try moving the cop on cylinder 8 with another cylinder and see if the misfire follows. If not then try moving plugs, then injectors. If none of those have an effect, try a compression test. There have been some that have had a cylinder 8 overheating issue, but that was more common on the Mustangs.Aug 28, 2011 · Re: 1998 F150 4.6L Cylinder 8 Misfire - Need advice. by ArcherDude » Sun Aug 28, 2011 8:49 pm. I would pull number 8 plug again and see if it has more black gunk on it. If it has Black gunk on it then it could be a bad valve seal. This would allow oil to run into the cylinder and put black gunk on the plug.

Re: Misfire or rough idle 1994 5.8l E-150 No check engine li. by AutoCity_Richy » Wed Mar 12, 2014 8:59 pm. Have you checked the Oxygen Sensor Or the Vehicle Speed Sensor. Erratic VSS input to the PCM may cause the injectors to shut down. Also A Slow Responding Oxygen Sensor Can Cause Misfires.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.Feb 11, 2011 · Here are some of the most common symptoms of a misfire condition: The check engine light will be on. One or more misfire codes (P0300, P0301, P0302, P0303, P0304) will be stored in the car or pickup's computer's memory. P0300 Random Cylinder Misfire. P0301 Cylinder #1 Misfire. P0302 Cylinder #2 Misfire. P0303 Cylinder #3 Misfire.P0300 code: random or multiple cylinder misfire detectedCylinder 5 misfires 2007 ford f-150 Ford cylinder 200705 5.4 l misfire cylinder 6. Cylinder 1 misfireHave a 2000 f350 ford powerstroke 7.3 liter truck. the truck has a intermittent problem that Misfire f150 ford cylinder5.0 cylinder 8 miss fire 2013 f-150. Check Details Misfires cylinder2004 - 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 fuel being provided to cylinder 8. This must usually happen multiple times before a trouble code is stored and the Check Engine Light is illuminated.

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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.Jun 21, 2021 · 2009 - 2014 Ford F150 - Cylinder Misfire! 2011 5.0 F-150 - My 2011 5.0 has been misfiring. Codes, P0307, P0308, Cylinder (7 & 8). I replaced the spark plugs twice, replaced the ignition coils and the cables are fine. The cylinder does not have low compression either so I think it may be the fuel injectors but I'm not...Ran into some challenging issues last night with my truck. It's a 2011 F150 5.0 with 139,000 miles. Spark plugs were changed about 10,000 miles ago. Was running fine all day yesterday, then I stopped and filled up the tank with E85. The previous tank was about 20% E85 and 80% 87. About 3 miles later, it started running real rough.Ford Galaxy (00-06) X to 06 Mark Storey,2012 Ford Galaxy models with 4-cylinder petrol and diesel engines. Petrol: 2.3 ... Does not cover 2.8 litre V6 engine. 1998 Ford F-150, F-250 Electrical and Vacuum Troubleshooting Manual Ford Motor Company,2023-10 This 1998 Ford F-150, F-250 Electrical and Vacuum Troubleshooting Manual is a high-quality ...Changed coil (with an aftermarket) and it fixed the problem. 102000 miles. Cylinder 1, 2 misfire. Changed all the plugs (motorcraft), not just 1 and 2, found cracks in 1 and 2. Fixed the problem. 106000 miles. Cylinder 4 misfire. Checked the plug, changed the plug, drilled weep-hole, lowered gap to .030.

first thing, this 3.5 eco Boost is in my wife's 2016 Ford Expedition, I can't imagine they are that different between the truck and suv version. P0300- random misfire detected. P0303-cylinder 3 misfire detected. P0305- cylinder 5 misfire detected. this happened while trying to pass someone.P0300 code: random or multiple cylinder misfire detectedCylinder 5 misfires 2007 ford f-150 Ford cylinder 200705 5.4 l misfire cylinder 6. Cylinder 1 misfireHave a 2000 f350 ford powerstroke 7.3 liter truck. the truck has a intermittent problem that Misfire f150 ford cylinder5.0 cylinder 8 miss fire 2013 f-150. Check Details Misfires cylinderProblem went away. This weekend, on my way to an elk hunt, driving uphill on the I17 in AZ at about 70 mph, misfire started again, this time worse than before. And this time P0308 and P0304, misfire cyl 8 and 4! Took it to a shop, the coil pack was faulty on cyl 8, but cylinder 4 had a burnt up spark plug. I've never seen this before and was ...2013 5.0 226k miles. Cylinder 4 misfire code on occasion, rough idle that smooths out when warm. Replaced number 4 coil with no luck, new plugs. Compression check shows cylinder 4 at 90 psi cold. I don't have the tools to do a leak down test, so I'll have to find a shop to do it. I might try a new injector. Bought truck at auction recently ...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.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". User Submitted Video.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.2011 F150 5.0 Misfire Issues. Ran into some challenging issues last night with my truck. It's a 2011 F150 5.0 with 139,000 miles. Spark plugs were changed about 10,000 miles ago. Was running fine all day yesterday, then I stopped and filled up the tank with E85. The previous tank was about 20% E85 and 80% 87.Ran into some challenging issues last night with my truck. It's a 2011 F150 5.0 with 139,000 miles. Spark plugs were changed about 10,000 miles ago. Was running fine all day yesterday, then I stopped and filled up the tank with E85. The previous tank was about 20% E85 and 80% 87. About 3 miles later, it started running real rough.

P0306 is a fairly common trouble code with the Ford F150.It’s and OBD2 code and stands for:. P0306 is certainly a cause for concern, and should be considered a threat to the drivability your F150. The nice thing about P0306 is that it’s a cylinder specific trouble code, which makes diagnosing the problems much more simple than P0300, …

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 ...Have a used 2012 3.5 Ecoboost crew cab with 60,300 miles. Purchased 6 mos. ago with 54,000 miles. Have a 1-year bumper-to-bumper warranty and a 2-year/100,000-year engine warranty. I have experienced the dreaded misfire shutter and loss of power (CAC issue). I am taking the truck next week for a diagnostic to the local ford dealership.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 ...25 Feb 2019 ... A bad valve seal leaks oil into combustion chamber, where it doesn't belong. Do a cylinder pressure check on ,#7and especially #8. You might be ...2009 - 2014 Ford F150 - Cylinder 4 misfire and low compression - Hi everyone, happy to find such a great forum with a ton of knowledge and experience, Im hoping for some advice. Ive been mostly in the jeep world but recently delved into Ford trucks by picking up a 2014 F150 with the 5.0 for a really nice camping truck...I have a 2008 F-150 5.4L V8 with 295000km. First the truck started shaking and losing power at about 100km/hr, I got a P0304 cyliner #4 misfire code. I switch the coils between #2 and #4 cylinders to see if the problem would follow, And it did so replaced the coil on cylinder #2. Then, the truck starting shaking again and the code reader told ...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 intake valve....Misfire cylinder 3 code. 8 posts • Page 1 of 1. bwolf24 New Member Posts: 15 Joined: Tue Oct 05, 2010 8:29 pm Truck: 2001 f-150 supercrew 4x4 xlt. Misfire cylinder 3 code. Post by bwolf24 » Tue Oct 05, 2010 9:12 pm. I have 2001 f150 with triton 5.4l engine with 120k miles. Just replaced plugs a weak ago. ... 2003 Ford F-150" ...

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Nov 28, 2019 · I have a misfire on cylinder #8 within the first 1000 revolutions on startup. I have replaced the spark plug in the past and the problem would go away for a few months. When the light would come back on I would replace the plug and get a few months with no check engine lights. I switched the coils around and the problem doesn’t follow the coil.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...The oblong cylinders were mainly 3 and 4. Try moving the cop on cylinder 8 with another cylinder and see if the misfire follows. If not then try moving plugs, then injectors. If none of those have an effect, try a compression test. There have been some that have had a cylinder 8 overheating issue, but that was more common on the Mustangs.The check engine light finally went from flashing to solid and it turns out it is cylinder 3 misfire. And it's random, most time full throttle won't cause an issue but I have had a part throttle misfire. ... F150Ecoboost.net is the best Ford F150 Ecoboost Forum with discussions on 2011+ F150 Ecoboost Trucks. Discuss performance mods, towing ...About a week ago my F-150 4.6L began to skip and run rough. It shakes a lot when it's doing this, but the problem is intermittent. Sometimes it does it a lot, then other times it seems to run on all cylinders. Unfortunately I cannot identify any 'trigger' that might be causing this problem. Sometimes it starts from cold and runs fine then the ...Well, problem was still there. Figured it was prabably also time for a new coil pack, so installed a new one. Problem still there. In short, I've done all the normal tune up basics. New plugs, coil, wires, fuel filter, air filter. Done a visual check on hoses, wiring, connectors. Still getting the o2 sensor codes and the misfire #5.31 Aug 2013 ... Cylinder #8 is dead. Jump ... Did this on my 92 F150 on Friday. Still have ... TeraFlex Ford 9" 8.8" Disc Brake Conversion Kit FORD 4x4 Fits Ford ...GEN 2 (2017-2020) Ford F-150 Raptor Forums. Ford Raptor Engine Discussion and Performance Mods . Misfire Issues. Thread starter Misfit_1122; Start ... Gen 2 3.5L EcoBoost Cylinder Misfire. fordraptorfun; Dec 27, 2023; Ford Raptor Engine Discussion and Performance Mods; Replies 4 Views 2K. Dec 27, 2023.Dec 23, 2022 · 1. Bad Cam Phaser: One of the most common causes of a multiple-cylinder misfire on an F150 is a failing cam phaser this has been a known problem for years (especially 2005-2012 Ford F150s and 3.5 EcoBoost engine) and is almost always the cause of a random misfire. The cam phaser is responsible for adjusting the timing of the valves as they open ...The oblong cylinders were mainly 3 and 4. Try moving the cop on cylinder 8 with another cylinder and see if the misfire follows. If not then try moving plugs, then injectors. If none of those have an effect, try a compression test. There have been some that have had a cylinder 8 overheating issue, but that was more common on the Mustangs.Cylinder #8 Misfire Detected. What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. ... Stumped My father-in-law has a 97 Ford F-150 with the 4.6 VIN W (non-COP Ignition) engine with 188,000mi. on the body and 1000mi. on the engine. I recently rebuilt this ... ….

Step 8 - Install the new plugs. Discard the old spark plug and take out your new one. The spark plug below has been pre-gapped so no gapping is necessary. If you do need to gap your plugs, check your emissions label under the hood. You can pick up a gapping tool at any auto parts store.Re: Rough Idle/Misfiring - HELP! (2006 F150 5.4L v8) by 3FOX » Wed Sep 02, 2015 5:14 am. Let me give you a 101 on misfires with those codes. The crank sensor measures the rotation time every time a cylinder is sparked. If rotation time is too slow as compared to the average of all the cylinders, it is deemed a misfire. Cylinder 1 and 5 specific.P0304 is a cylinder-specific misfire code, meaning only your F150’s fourth cylinder has a misfire. Before you can even diagnose P0304 in your truck, you need to find the fourth cylinder’s location. On “V” configuration engines, it’ll usually be the second cylinder on the head further away from the front of the engine.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.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.Problem went away. This weekend, on my way to an elk hunt, driving uphill on the I17 in AZ at about 70 mph, misfire started again, this time worse than before. And this time P0308 and P0304, misfire cyl 8 and 4! Took it to a shop, the coil pack was faulty on cyl 8, but cylinder 4 had a burnt up spark plug. I've never seen this before and was ...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 intake valve....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.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. Misfire cylinder 8 ford f150, 2012 Ford F-150, 5.0L engine, ~225,000 miles. misfire on cylinder #4. I've changed out all 8 spark plugs, all 8 coil packs, and all 8 injectors. ... Hello my name is ***** ***** customer has brought me a 2003 ford F150 5.4L. Has a misfire on cylinder 8 only under a load or just driving between 40-45 MPH. Stepping on gas pedal misfire goes away., 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..., To diagnose the P0308 1998 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., Jan 8, 2015 · Late Model F150s > 2009 - 2014 Ford F150 > 2011+ Engines section more helpful/appropriate than General F150 Discussion posts. Last edited by gDMJoe; 10-14-2015 at 08:05 PM ., 2009 - 2014 F150 - 2013 5.0 cylinder 5 misfire P0305 - Working on a 2013 5.0 F150 with a friend from work. It has a P0305 cly 5 misfire, which did not move when we swapped coils. Compression test shows all cylinders within 5%.Disconnecting the plug on the coil makes no change in the idle - it's missing continuously...., 2011 f150 5.0 misfire and limp mode. This one has everyone stumped ... my truck has 165K miles on it, run prefect ,,until,, at highway speed its will randomly activate check engine light and often go into limp mode. Limp mode will only last 30 seconds then truck goes back to running normal. It is throwing codes for misfires on cylinder 2 and 8 ..., 2015 - 2020 Ford F150 - 2018 5.0L Misfire on cylinder 1,6, & 8 - Hey guys i was leaving work yesterday and jumped on the highway. Truck started vibrating while driving. Vibrations when accelerating. I stopped at auto zone and reading said misfire on cylinder 1 and 6. My dad and i checked out the sparks and they seemed..., 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., Apr 14, 2008 · 1997 - 2003 F150 - #8 cylinder misfire, can't figure it out. - Ok, long story, but i want to give you all the info. I have a '99 150 with a triton 5.4 appx 130k miles. About a year ago i had the #4 COP go out so i changed it and all the plugs at the same time. My dad was driving it about 2 weeks ago and it blew out..., 2015 - 2020 Ford F150 - Torque Converter Failure or Engine Misfire? - Hi, I own a 2015 Ford F-150 XLT 3.5L V6 EcoBoost engine with 104,000 miles. This vehicle has been subjected to extensive troubleshooting in an attempt to resolve a persistent shuddering problem occurring in the 40-50 mph speed range. Around two..., P2187 = "system too lean at idle, bank 1". The problem is in the bank of cylinders that includes cylinder 1. Running too lean at idle can often be caused by an air leak between the mass air flow sensor and the throttle body, a leaky intake manifold gasket, or some other vacuum leak. "False air" is downstream of the MAF sensor so it is not measured., 2004 - 2008 Ford F-150. Looking for recent topics? 2005 F150 5.4 Random/Multiple Cylinder Misfire Detected / Rough Idle / Sputter when cold. 8 posts • Page 1 of 1. sp1ke01 New Member ... P0300 Random/Multiple Cylinder Misfire Detected P0316 Engine Misfire Detected on Startup (This one is intermittent. As in, over the past few weeks i've ..., Sep 11, 2018 · The P0301 trouble code will trigger your F150’s check engine light. The truck itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer. You may smell raw gas coming from the tailpipe. The F150 may backfire., Yes, cylinder misfire issues can be related to the engine code P0420 in Ford F-150. The P0420 code indicates a problem with the catalytic converter, which can lead to misfires. Getting a proper engine code P0420 diagnosis fix is crucial for resolving these issues and ensuring the optimal performance of the vehicle., Are Cylinder Misfire Issues Related to the P0420 Engine Code in Ford F-150? Yes, cylinder misfire issues can be related to the engine code P0420 in Ford F-150. The P0420 code indicates a problem with the catalytic converter, which can lead to misfires. Getting a proper engine code P0420 diagnosis fix is crucial for resolving these issues …, 2004 - 2008 Ford F150 - 2007 F-150 5.4 misfire - Need help! I have replaced plugs, coils and even the coil plug wire connector on my 5.4 engine. Still getting a misfire and running rough. Code reader says misfire on cylinder 8. What else can I check to fix it? Update: Thanks for all the tips guys. I ended up having a..., 1997 - 2003 F150 - 2003 F150 4.2 Misfire Cylinder 3 and 4 - 2003 F150 4.2 Misfire Cylinder 3 and 4. Engine is 1 year old. Plug are 1 year old. Wires and coil are 2 weeks old. History: Service engine soon light came on about 3 weeks ago. Checked codes. Misfire on 2,4,6. Had injectors cleaned. Light came back on...., Received 22 Likes on 7 Posts. 2020 F150 Misfire on #1 & #3. Good afternoon, hopeful someone has some insight here. I have a 2020 F150 XL, 4x4. 5.0 with the Roush blower. The truck has had a slight vibration/shake when in gear & stopped since I picked it up about 3 weeks ago, didn't think much of it unknown if it's related to the …, Apr 9, 2023 · Code P0308 Ford Description. Misfire is defined as a lack of combustion in a cylinder due to the absence of a spark, incorrect fuel metering, low compression, or any other cause. When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position ( CKP) sensor signal to vary, the Engine ..., 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., 6 Apr 2017 ... How to find a misfire in your Ford ... F150 Ecoboost Check Engine Light Flashing - Rough Running - Common Causes Explained. ... 8 Top Noises Your ..., 01-24-2004 11:12 PM. Reply Share. 1 / 1. 2021+ F150 - 2021 F-150 Misfire issue on the Powerboost - Took delivery of my Powerboost F-150 about a month and a half ago. It has spent the last 18 days at the dealership as I had a severe misfire condition. Engine and truck shakes when the engine runs, and doesn't when it is in full electric mode., Re: 2001 f150 5.4 misfire. by pricerf150 » Thu Sep 25, 2014 1:31 am. I'd say pull the fuel filter and then turn the key and pump out as much fuel as you can from the tank (after relieving the pressure)Then dump in some new gas ans see if it helps. dusty3030. New Member., 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 - Cylinder Misfire After Plug Replacement - I have a 5.4L '04 F150 with 105,000 miles on it. The truck had a slight stutter at around 45 - 50 mph under low acceleration. ... The mechanic said that there was a cylinder 7 misfire issue that they wanted to try and diagnose. I said OK. They swapped the coil with a different ..., Advertisement Autoloaders and semi-automatic shotguns take the pump-action idea one step further, using similar mechanisms to those employed by machine guns. As the designs get mor..., Code P0308 Ford Description. Misfire is defined as a lack of combustion in a cylinder due to the absence of a spark, incorrect fuel metering, low compression, or any other cause. When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position ( CKP) sensor signal to vary, the …, 2012 f150 87000km - took it in for code p0308 ( cyl 8 misfire ). Dealership wanted me to do tune up , fuel injector clean . I refused and agreed to switch just cup 8 plug. Problem continued , compression test requested by me showed bad exhaust valves in 6/8 cylinders. Dealer ship replaced engine block with NEW Block under warranty. Picked it up from shop and drove it down highway 200km later ..., The P0301 trouble code will trigger your F150's check engine light. The truck itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer. You may smell raw gas coming from the tailpipe. The F150 may backfire., 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..., 2015 - 2020 Ford F150 - P0300 random/multi cylinder misfire 2018 3.5L ecoboost + Fordpass app - So my truck threw a check engine light w/ this P0300 code today, although I don't notice anything when driving it the short distance home after it came up. Cool side note, the Fordpass app notified me basically immediately..., Re: Rough Idle/Misfiring - HELP! (2006 F150 5.4L v8) by 3FOX » Wed Sep 02, 2015 5:14 am. Let me give you a 101 on misfires with those codes. The crank sensor measures the rotation time every time a cylinder is sparked. If rotation time is too slow as compared to the average of all the cylinders, it is deemed a misfire. Cylinder 1 and 5 …, Received 18 Likes on 15 Posts. 2003 Misfire. Good afternoon all! I am working on a 2003 F150 with the 5.4l. I own a F150 with the same motor, so when the owner of the truck i am working on said he needed help I figured it would be a breeze since I know this motor fairly well. Well, the truck I am working on has me scratching my head.