F150 Running Rough After Spark Plug Change

1999 ford f150 rough idle an poor take off no power - Ford 1997 F150 Regular Cab question change spark plugs if still haveing probs after that change fuel filter. Re: LOW ROUGH IDLE, Sometimes dies! I had all the same crap, did all the same stuff everyone else above did, made some gains however the bottom line for my truck was a Throttle Positioning Sensor. When do spark plugs need to be replaced? If your car starts well and runs smoothly, it means that you've maintained it well. To avoid major vehicle malfunction, your trusted experts at Pep Boys have complied a list of warning signs to look for when your spark plugs are failing. truck runs rough when it warms up 11 Answers. Unlock the hidden potential of your 2016 Ford F-150 that has been waiting to be released!. Make sure your workhorse gets off to quick, problem-free starts with a new high-performance Ford F-150 spark plug from AutoZone. 4L V8 thermostat replaced, now runs rough We replaced the thermostat on our 2002 Ford F150 Supercrew 5. The other night had real bad miss put heet water remover in tank by god it stopped the miss. Re: stx 15f idle problems and running rough **update** - first off thanks for all your help guys ! it seems like the problem is solved now. Changing the spark plugs on the 4. ditto on the plugs and wires. any other ideas before having to go to dealer?. A faulty spark plug may cause several engine performance problems, including an engine rough idle. There is a 6 inch lift with a set of 35's and it looks really cool. new timing chain, guides and tensioners. These plugs generally last around 100k miles but they are a bear to remove when you do go to replace them. Then changed the fuel filter, and now have changed the spark plugs. And on a Ford if a coil pack fails it will display on the meter at orilleys or napa when they plug it in which cylinder number failed. I have tried numerous gas stations over the past month and still no change. Get in to go to work Monday morning and it is running rough as hell again, check engine light is alternating between on and flashing. When It Is About 40 Degrees F Ambient Temp Or Colder, When I Start. I now have one code only that keeps popping up with rough idle random misfire code p0300 thats the only code. 0L code p0308 DOHC has an intermitent miss on#8 cylinder. I have a 2006 ford f150 with 96000 miles on it. Can I tell, from a compression check of the enging, whether it is worth spending the money on repairs? How hard is it to replace valve cover gaskets? I am an amateur. My car was running flawlessly on the way to the Auto store. so I had to replace gaskets, spark plugs, valve rocker arm, reset engine. I have a 2008 f150 4. At Firestone Complete Auto Care, we visually inspect all of your engine components and install new parts (including spark plugs and fuel filters) as needed. UPDATE: I never. 4l and i replace all the plugs and coils and it turned out to be a. Learn about this problem, why it occurs, and how to fix it. My truck will do this every once in a great while. DIAGNOSE – ENGINE IDLES TOO HIGH. 2-liter V-6 engine, commonly known as the Canadian Essex engine, overcame early gasket problems to become a dependable long-running motor. 5 liter EcoBoost V6 engine in the 2011 and 2012 Ford F-150 had some problems with loss of power (read here for 2013 and 2014 trucks), running rough and experiencing misfires. I even set the cruise at about 55 which was a sure fire way to get the hesitation/missing before I attempted the repair and it seemed perfect. If you own a 2004-12 Ford F150 or other truck with 5. When I first bought the car it had DTC P0172, but after a reset it didn't come back. easy fix, like 5 minutes. Some older cars use a carburetor to process fuel, rather than a fuel injection system. Sometimes even stalls out on me. Body Type: Truck See similar vehicles. Rough Running Nightmare 4. decided to check a plug and see how it looked and the wire fell apart as I removed it and the plug was completely shot. After running fine last night, and for a good portion of the day, I was on my way home from Clearwater and the idle became rough. Re: 96 f 150 wont start after getting hot I'm not real sure just yet but it may be flooded with the description. While not intended to be an all-inclusive list, we put together this 2009-2014 Ford F-150 common problems guide to help pinpoint a few of the nagging issues we. com, the official website of Diesel Power Magazine. 6l - after his inspection, the mechanic stated that the bottom of the #2 spark plug (manufacture installed) had disintegrated and fell into the head causing so much damage to the #2 cylinder that i have to replace the entire engine at a cost of over $6,000 plus tax. timing was done correctly. 00 to replace a $200 part but could not guarantee it will fix the problem. Several bottles of injector cleaner ran through it. After driving around for a while, the truck started to stall again at freeway speeds and even died at a stoplight. I have changed the plugs, replaced one bank of fuel injectors, truck still runs rough, does not have power going up hills. 4 liter 3 valve motor. I have a 1993-4. Exterior; Fog lamps; Vinyl upper/anti-scuff lower door trim w/integral armrest, map pocket, door pull handle, courtesy lights; Instrumentation; Auxiliary pwr point in instrument p. I TOOK IT TO THE DEALER AND THEY DIAGNOSED A CRACKED 3 CYLINDER HEAD. of the 2007 Ford F‑150. Sounds great, low vibration, I'm a very happy boy. The plugs are not that easy to get to, not as hard as some and not as easy as some either. I have replaced the spark plugs and wires with the exact same part number as before. , and they sometimes allow the spark to short to the metal on the cylinder head instead of through the spark plug like it's supposed to. The full list is available on CarComplaints. Plugs are over due bad. Top 10 Causes of a Rough Idle | JL Motorworks. 4L F-150 Problems after intake manifold change. 6l - after his inspection, the mechanic stated that the bottom of the #2 spark plug (manufacture installed) had disintegrated and fell into the head causing so much damage to the #2 cylinder that i have to replace the entire engine at a cost of over $6,000 plus tax. has a nasty ticking noise at all times. made no difference at all. F-150 owners are having the most trouble with the engine (28%), windows (23%), and the transmission (10%). just got 94 F150 351 owner said at 20,000 this started to happen , starts fine when getting to just about to hit normal rang on temp. Ford garages charge $300. Ford E-150 Rough Running Engine and Possible Check Engine Light - 111 reports. After a Firestone Complete Auto Care car tune-up, you'll discover your engine starts easier, runs smoother and is more efficient. Can anyone tell me what might be wrong?. It runs strong a while the engine is cold, but as it warms up, it starts running rough. 3 v6 and a inline fuel filter. The jimmy started running rough so I replace all spark plugs and wires and rotor buttum distributor cap and radiator. the truck runs fine when i first start it but once it warms up it start to sputter when i give it the gas. This will influence the cost of the service which can range from $100 – $200 at a shop. Symptoms of a broken timing chain guide can range from a rattle noise on startup (not always) to rough idle to a check engine light. ran great for a day, same thing happened again,this time no4. 4 Still rough after plug and coil change Post by Genoco » Sat Feb 04, 2012 12:18 am After reading several posts, I armed myself with a Lisle kit and followed the procedures most often recommended from this forum. A couple of weeks ago it began to have trouble starting. dealer said it was throttle body so I replaced. The codes still come up that I need to replace 5-8 coils and misfires/runs rough. Getting a new oil pan gasket may cost $170 and takes 6 hours to replace. 2005 Ford F-150 / Engine runs rough/missing i was having this same issue with my 2006 F150 5. Oil change fuel pump and filter in tank change spark plug change wires and coils. Sometimes even stalls out on me. Several bottles of injector cleaner ran through it. Made one stop on the way home, and sure enough, when I restarted the engine, P0305 again. Rough Idle When Starting Cold, Then Goes Away When Engine Is At Operating Temperature More Details Below I have an older, low mileage vehicle with a V8 engine. 2009 Taurus Engine continues to misfire after replacing spark plugs and coil packs Post by markiemark » Tue Oct 31, 2017 10:14 pm I was driving along last Friday and suddenly my 2009 Ford Taurus begins to shake violently and lose power. But it didn't solve the problem. To see how frequently Ford F-150 problems occur, check out our car reliability stats. Incoming search terms: F150 Turns Over Wont Start,Ford F150 Wont Start,Ford F150 Turns Over But Won\t Start,2010 F150 Wont Start,1988 F150 302 Engine Runs When Spraying Gas Into Carb,04 Ford 150 No Start,2011 Ford F150 Turns Over But Won\t Start,2014 F150 Truck Turns Over But Wont Start,2014 Ford F 150 Turns Over But Wont Start,2009 Ford F150. Was shaking then had check engine code that 1 and 3 were misfiring as well as running rich. 4 Liter V-8. government has opened up an investigation into F-150s that rely on the EcoBoost V-6 engine for motivation, as some have been reported to lose power while accelerating. The more notable symptom will be running rough and feels like missing gas. Then, out of nowhere, after a long idle (in gear with foot on brake, such as in a drive-thru line) my truck would start to shake. I have a 1993-4. that's why the wires are so costly. Threads Tagged with stalling. The Jeep will start right up but will idle very rough. Here at Advance Auto Parts, we work with only top reliable Ignition Coil product and part brands so you can shop with complete confidence. I decided to change the fuel filter and when I pulled it rusty water ran out of the filter. IN THE BEGINNING IT WAS A BLOWN 3RD CYLINDER HEAD AND WAS GOING TO COST $5,000 TO REPLACE THE CYLINDER AND LOOK AT THE REST OF THE ENGINE. , and they sometimes allow the spark to short to the metal on the cylinder head instead of through the spark plug like it's supposed to. Re: stx 15f idle problems and running rough **update** - first off thanks for all your help guys ! it seems like the problem is solved now. it's. To answer the question about the plug wires. Mind you, I had cleaned it pretty well only days before. Two days ago started idling very rough at signal light, when I start moving engine runs very rough. and said 2 codes camshaft sensor, and P0456 small EVAP leak. Then, out of nowhere, after a long idle (in gear with foot on brake, such as in a drive-thru line) my truck would start to shake. Ford garages charge $300. Seems like it would have to be much higher resistance to have such a rough idle. Body Type: Truck See similar vehicles. The more notable symptom will be running rough and feels like missing gas. When do spark plugs need to be replaced? If your car starts well and runs smoothly, it means that you've maintained it well. Rule the roost with the HPI Crawler King! Take on any terrain with the all-wheel drive, mighty Crawler King! Fitted with waterproof components, full-time 4WD and super-tough straight axles, the Crawler King can get over the steepest rocks and ford deep streams without breaking a sweat!. 87k miles, automatic. ditto on the plugs and wires. 4 3 v motor with ticking and knocking from the phasers, timing chain, tensioners, and VCT's. I have a 1993-4. With about 30 miles left the #3 spark plug blew out. In all, the government's investigation covers around 400,000 F-150 models made from 2011 to 2013. It usually averaged around 13. Spark Plug Type Heater Principle. 5L EcoBoost V6. you have to replace all of your spark plug wires. No overheating issues at all and starts every time. Not real bad but wouldn't idle rock steady like it had been lately and a little hard to start. Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve, EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wire. End codes came up P0022 and P0342. i noticed my 2011 ford f-150 was running rough. Rough Idle When Starting Cold, Then Goes Away When Engine Is At Operating Temperature More Details Below I have an older, low mileage vehicle with a V8 engine. 2005ford f-150 4. 2008 Yamaha F150 running rough December 26th, 2009, 12:11 PM Took my boat out for a spin the other day after sitting up for 3 months and seemed to run as well as always. 1998 Ford F-150 Running Rough After Start-up I Have A 1998 Ford F-150 With The 4. check engine light is no longer coming on but still running. Now, let's fix the issue when engine runs rough after warm up in sequence and later troubleshoot the actual cause of it. i have an 01 that had them replaced when I bought the truck used at 24,000. Proceed to Step 2 after running Relative Compression to rule out any mechanical issues. My car has an automatic transmission. gauge runs rough have to keep hitting throdle slight exhaust noise then runs fine until hot but idles low and smells of fuel it has 96,000 now change most sensers except egr, distributor. Base trim shown. A broad range of problems can cause rough idling in a motorcycle engine. this model used the thick film ignition with the module mounted on the distributor, while the original ford units seemed to last pretty good aftermarket units have had occasional really weird problems and symptoms, also if the plastic parts of the pick up coil [inside the distributor] have. I have a 2006 ford f150 with 96000 miles on it. I tried to restart it and it ran very rough with no power and I had to have it towed home. OE Replacement for Stock and Tuned EcoBoosts. 2005ford f-150 4. new timing chain, guides and tensioners. Asked in Auto Parts and Repairs, Ford F-150 Your 2000 Ford F150 is running rough after you changed the pluges and plug wires? If you didn't replace one spark plug wire at a time you may have mixed. Rough engine idle after Replacing Spark Plugs - Distributor Cap and Rotor Failure How to fix a rough idle/clean, replace IAC valve and the P0300 code - Duration: 13:30. Rattling noise, rough idle, check engine light. Vehicle: 2001 Ford F150 4. could this be my egr valve? if so, where can i locate this to change or clean it? some one help please. I really wish this could get fixed at the dealer, but no codes pop up. 4 have had miss problems the last fix was plugs. After running fine last night, and for a good portion of the day, I was on my way home from Clearwater and the idle became rough. If I remove the vacuum line from the charcoal canister to the sensor the idle smooths out and the truck runs fine. 00 part that is replaced by removing two screws. If you pull plug wires and find it is running on 1 & 2 but misfiring on 3 & 4 (or vice versa), then it is likely that one carburetor is not feeding fuel properly. Lead fouling can cause your engine to misfire only at high-rpm and under hard acceleration. When this occurs slack in the chain tends to jerk and the plastic timing chain guides can break. This truck has been running everyday. decided to check a plug and see how it looked and the wire fell apart as I removed it and the plug was completely shot. The purpose of this article is to highlight some of these common problems and how to fix them, so your mighty "Five-Oh" runs just as good, if not better than it did during the Reagan/Bush Sr. I have replace the fuel filter, fuel pump, plugs & plug wires and the vehicle is still running rough! Had it to a shop & the scanner said was misfiring on cylinder 4. took it to mechanic, they said it was no. EcoBoost Misfire: Spark Plug Fix DanielJaegerFilms. 2L running rough. easy fix, like 5 minutes. I have a 1993-4. then i took it to a local repair shop where they claimed it did not have any codes in the computer wich i figured it. IN THE BEGINNING IT WAS A BLOWN 3RD CYLINDER HEAD AND WAS GOING TO COST $5,000 TO REPLACE THE CYLINDER AND LOOK AT THE REST OF THE ENGINE. 3-l Power Stroke V8 to pull dump truck to solid ground. I always replace plugs and wires as a set because typically, its so hard to get them off. Fourth time it will start fine until I fill the truck up with gas again. 00 later #5 spark plug fouled because the coil went bad, now I'm left with a truck i cant. View more specs. It was getting late and it looked like a snake pit getting to the bottom wires. whith 56,000 miles i thought it might be the coils so i replaced all 8 coils, spark plugs, fuel filter and air filter. DESA recommends annual replacement. I also changed the fuel filter and treated tanks for contamination. 2L (165k miles) Codes: P0171 and P0174 (system too lean, banks 1 and 2) Long term fuel trims are all around 30%. If the damage is bad enough, you may also notice your engine running rough while driving. 0L Power Stroke. Still runs rough and shakes. Re: LOW ROUGH IDLE, Sometimes dies! I had all the same crap, did all the same stuff everyone else above did, made some gains however the bottom line for my truck was a Throttle Positioning Sensor. Changing plugs on 5. 2005ford f-150 4. 2-liter V-6 engine, commonly known as the Canadian Essex engine, overcame early gasket problems to become a dependable long-running motor. Night and Day difference before/after this tune up. Rough Idle When Starting Cold, Then Goes Away When Engine Is At Operating Temperature More Details Below I have an older, low mileage vehicle with a V8 engine. If you pull plug wires and find it is running on 1 & 2 but misfiring on 3 & 4 (or vice versa), then it is likely that one carburetor is not feeding fuel properly. / F-150 / 2006 f150 runs rough 3 Probably need to change out the spark plugs, clean the Mass Air Flow sensor with MAF spray cleaner, along with cleaning the. As trucks and SUVs have grown in size and height, the addition of nerf bars and running boards has become common. I have a 1993-4. See if the idle changes mine didn't at all so that was the extra kick I needed to just swap it out. The air pump (rotor) pumps air to the nozzle. A smoothly running engine is often taken for granted until a problem comes to light and the operator is left to diagnose the problem. Q: Had plugs,wires, cap, rotor, and coil replaced. The engine once started. We could even call this problem a common one for the Triton engines produced prior to 2004. Find the latest Ford F150 parts and accessories from your favorite brands. Get in to go to work Monday morning and it is running rough as hell again, check engine light is alternating between on and flashing. 2003 Ford f150 5. Re: stx 15f idle problems and running rough **update** - first off thanks for all your help guys ! it seems like the problem is solved now. Last tune up was 100,000 miles ago. this model used the thick film ignition with the module mounted on the distributor, while the original ford units seemed to last pretty good aftermarket units have had occasional really weird problems and symptoms, also if the plastic parts of the pick up coil [inside the distributor] have. I put a new fuel pump in my 1999 gmc jimmy 4. 1999 Ford F-150 Maintenance & Repair i put a new ignition switch in my truck but to do it i took apart the top of the column to do so and when i did a piece fell out with a spring and i got it to where it all goes back and i don't know where the spring looking thing goes and now it is like the key aint telling the transmition its on because it. I look to my left to see the wind taking white smoke bellowing out of my tailpipes. To learn more, see. Having the life does it make it ride a little rough, but other than that the truck is amazing. took it to mechanic, they said it was no. Engine runs rough and P0308 is present on scan tool. If I remove the vacuum line from the charcoal canister to the sensor the idle smooths out and the truck runs fine. they decided it was the spark plugs (which only had approx. Had tps replaced and started getting lean codes but truck ran fine. Ford has come up with TSB 14-0017 to repair this on 2013 and 2014 Ford F-150's as well (running 3. I have changed ignition, plugs and pcm as it appears that I have no spark no #3 - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. When it comes to your Ford F-150, you want parts and products from only trusted brands. 4 liter eng. After some trouble shooting we found a bad connection on the fuel pump fuse and installed a new fuse and things worked fine. changed spark plugs, I recommend checking for a signal to the #5 injector. 4 Still rough after plug and coil change Post by Genoco » Sat Feb 04, 2012 12:18 am After reading several posts, I armed myself with a Lisle kit and followed the procedures most often recommended from this forum. To answer the question about the plug wires. Somewhere around 45-55 mph, just before the transmission shifts up to 4th gear, there's a slight shudder that feels like it's coming from the transmission. I replaced the fuel filter and put in some fuel system cleaner in but to no avail. 2015 - Present Ford F150 - General discussion on the latest generation Ford F150 truck. When you replaced the spark plug wires, are you sure you got then in the right order? It is also possible that one or more of the new wires or spark plugs is defective. Then changed the fuel filter, and now have changed the spark plugs. When do spark plugs need to be replaced? If your car starts well and runs smoothly, it means that you've maintained it well. Please help. may be a little late, but had a similar problem with my '97 and it was a result of having a leak in the collant line hat would spray into the sparkplug well and short out a spark plug. Several bottles of injector cleaner ran through it. The vehicle has 117k miles on it and I am told it has always been well maintained. A plug that is damaged or installed incorrectly can result in fuel being burned at an inconsistent rate. any sugges. A misfire is often chalked up to ignition timing when, in fact, there are a number of reasons the engine could be running rough. Why is there oil in the spark plug well? 2003 Nissan Altima, 3. I have also cleaned the throttle body and what was possible inside the intake manifold. See if the idle changes mine didn't at all so that was the extra kick I needed to just swap it out. One of my coworkers has a F150 with the 5. 88 F-350 with EFI 460 Starting/Running Problems - posted in 80-96 Ford Truck Tech Support: I have a 1988 Ford F-350 with an EFI 460 engine. I have replaced the spark plugs and wires with the exact same part number as before. The appearance and color of the deposits can reveal other problems that may need fixing: Normal deposits Light brown or tan colored. my truck started to run rough with no power then check engine light came on. Truck runs awful after spark plug change. put in new plugs and checked 4 Answers. 9 Liter in an F-150. Newer cars need a tune-up less frequently, as most modern cars don't have the ignition wires or distributor and use long-lasting spark plugs. CAR RESTORATION HOW TO How to Replace A Distributor Without Going Crazy. Runs rough. Always note the locations of each spark plug. Maintenance Shop - Page 2 - Ford F150 Forum - Community of Ford Truck Fans. 2004 F150 RUNS ROUGH AND stalls while coming to a stop. new timing chain, guides and tensioners. While the location of the plug itself is unusual – it is accessed adjacent to the intake manifold and is quite deep in the valley of the engine – the bigger concern of many is the breaking of spark plugs during removal. Will not re-start, seems to be flooding at this point. It has been running a little rough, so I decided to replace the plugs and wires. Maintenance Shop - Keep your Ford F150 truck running strong. Ford F150 parts & accessories from JC Whitney. Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve, EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wire. Had Ford replace plugs 20k miles ago. the engine light is on but not blinking. The 2005 Ford F-150 has 22 problems reported for engine firing improperly - shakes vehicle. I TOOK IT TO THE DEALER AND THEY DIAGNOSED A CRACKED 3 CYLINDER HEAD. Runs rough. took it to mechanic, they said it was no. ran great for a day, same thing happened again,this time no4. Now that I have replaced all 6 spark plugs(pre-gapped) and all 6 coil packs, the check engine light is back on and it's running rough again. 2004 F150 RUNS ROUGH AND stalls while coming to a stop. there is a coil built into the top of each boot that goes over each spark plug. While driving home from vacation, with about 150 miles to go, the #2 spark plug blew out of the engine. My 2003 F-150 with 4. It's dyno day and therefore a happy day. Anyway, got old plugs out unbroken (all 8!!!) and new ones installed, along with Ignition coil boots/springs. Can I tell, from a compression check of the enging, whether it is worth spending the money on repairs? How hard is it to replace valve cover gaskets? I am an amateur. Your adaptive memory in your Ford F-150 or Super Duty learns your engine performance, then adjusts to ensure your engine is running at top performance. I have a 1988 F150 4. P0304 came back. 054 inch spark plug gap ) * see if there is a Vehicle Emission Control Information ( VECI ) decal in the engine compartment. A plug that is damaged or installed incorrectly can result in fuel being burned at an inconsistent rate. Had tps replaced and started getting lean codes but truck ran fine. My car has 128000 miles. i have an 01 that had them replaced when I bought the truck used at 24,000. The engine once started. Take your truck to new heights with this excellent option for 09 and up F-150 pickups. Why does my car idle rough after changing spark plugs/ wires? I just changed the wires and plugs on my 94 buick regal 3. Some older cars use a carburetor to process fuel, rather than a fuel injection system. Engine Problem on the 2012 FORD F-150. 9 Liter in an F-150. I have changed the plugs, replaced one bank of fuel injectors, truck still runs rough, does not have power going up hills. Then cleaned Air Flow sensor and changed air filter. A broad range of problems can cause rough idling in a motorcycle engine. Find helpful customer reviews and review ratings for New AD Auto Parts Coil Set (8) 1997-2010 Ford F-150 V8-5. I parked it, and 2 hours later started it again and it suddenly idled very rough. Connect one end of another spark plug wire to the other coil tower; connect the other end of the spark plug wire to ground. 2000 Buick Century not running. Emission checks will catch a lot of bad spark plugs and force motorists to change plugs that need to be replaced. they decided it was the spark plugs (which only had approx. (Page 1 of 2). F150 Running Rough After Spark Plug Change. This information may be used by NHTSA during the investigation process. Upon arriving at one of my shops I am given a 2004 Ford F-150 5. Need some assistance on why the truck is still popping the same codes after the replacements of the above parts?. They never changed coils. The other night had real bad miss put heet water remover in tank by god it stopped the miss. After running fine last night, and for a good portion of the day, I was on my way home from Clearwater and the idle became rough. Is it possible that the diagnostic test caused an issue with my ECU?. We cleaned them up and swapped the plug on Hole #4 with #2. Once the car idled fine after about 5 minutes of doing this I went to drive and the car started to sputter again! Pulled back over and feathered the gas again until it idled fine. The customer complaint is that it runs rough and the check engine light is on. In all, the government's investigation covers around 400,000 F-150 models made from 2011 to 2013. Is there an easy. i have an 01 that had them replaced when I bought the truck used at 24,000. all has to do with cam positioning sensor. When to change spark plugs (6 tell tale signs) Spark plugs are an integral part of your vehicle's motor as they provide the much needed spark that ignites the air and fuel mixture within the cylinders. After the spark plug change I noticed that the truck was running extremely rough at idle and at higher rpms. A spark plug that fails to fire can cause an issue as simple as a rough idle to something as serious as a no-start. ran great for a day, same thing happened again,this time no4. Then my buddy said lets start it and see how it runs. spark plugs had opened up to over double the stock gap, which is probably what killed the coil. no CEL either. 6L V8 Specific Topics Rough Running Nightmare - Ford F150 Forum - Forums and Owners Club Ford F150 Forum - Forums and Owners Club > Ford F150 Forum - Help Zone - Ford F150 Problems, Complaints, and Solutions > 6TH Generation Ford F150 – 2004 to 2008 Ford F150 Trucks > Powertrain – Engines, Transmissions. DESA recommends annual replacement. Rattling noise F150 Fix Rattling noise f150. Anyway, its been running ok since summer after I replaced a bunch of stuff and then started running a little rough last week. Given that you have replaced all ignition related components,I would start there. 2003 Ford f150 5. 3 v6 and a inline fuel filter. Dealer replaced Idle air control valve to the tune of $200. 15000 miles on them). Common Issues With 1987-1996 Ford F-150 Pickup Trucks Ford truck transmission problems were common on F-Series models of the early and mid-1990s. Find the latest Ford F150 parts and accessories from your favorite brands. Runs great but after it heats up and I stop at a light it starts to diesel and make all kinds of noise. Pour a tablespoon of raw gas in the spark plug hole, replace the spark plug and try it again. Replace the single coil & spark plug for the "bad" cylinder ~$40 Replace the coils and spark plugs for ALL cylinders ~$175 The boots do go bad as they get dry, cracked, etc. The 2015 Ford F-150 has 83 NHTSA complaints for the engine at 50,619 miles average. 4-L V8) “Multiple and routine failure of the coil-over-plug for the.