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Truck: 02 F150 SCREW. Re: 2002 f150 5.4L PLEASE HELP!!!!! P0304 misfire. by 3FOX » Wed Dec 21, 2016 12:51 am. Let me give you some basic info. Any 30x cylinder code is from the coil 'secondary' onward to the boot, plug or cylinder fault. The flashing CEL tells you the ignition went missing and unburnt gas is being passed to the …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...2014 5.0 Misfire issue Please Help. Milage lowering getting worse indicates a rich air fuel mixture more than normal. The O2 sensors control mixture, the upstream one that is. The system is trying to compensate for poor ignition but you have all new parts. If ignition is ok and fuel is ok, that leaves airflow.2005 f150 cylinder 5 misfire. Your truck experience sounds surprisingly like mine. I had diesel sound most of its life - for sure at 140k. It made it to ~180 to 190k before codes started showing up, and to 212k before serious rough idle and drive-ability issues. 5w30 won't extend phaser life per se, but will put off effects of phaser problem ...Russians are buying more SUVs, and Ford wants a bigger piece of the action. The US carmaker will start producing two 4x4s—the Escape and the EcoSport, in Russia. Local production w...Cylinder 7 misfire. by Melon » Tue Mar 11, 2008 9:49 pm. 2000 5.4L. Took it to the dealership to get the plugs done and got it back a week ago or so. Didn't seem like it was running right, but didn't have codes til today. Also, haven't driven it since then cuz gas prices are nuts and my 'Bird does better.1997 - 2003 Ford F150 - misfire on cylinder 8 and running lean on bank 2 - I have a 98 f150 4.6l xlt. 157k miles. It is idling really rough. Rpm's drop down to bout 500 at idle, bogging down, and not wanting to shift into high gear. Code says misfire on cylinder 8 and running lean on bank 2. I just replaced all 8...Received 5 Likes on 5 Posts. 97 4.6 misfire and rough idle. My dad jut got a 97 f150 with a 4.6. We bought it knowing it had 2 misfires. We drove it around and it was rough at almost any rpm and it was a total dog, absolutely no power or acceleration. We bought new coils wires and plugs and egr because it threw a code.Re: misfire 8.cylinder triton 4.6. by AlbertaOilPatchF150 » Thu Aug 30, 2012 2:22 pm. My 2000 4.6L was doing that back in March, turned out to be moisture in spark plug wells on the rear cylinders on both sides (snow melting on cowl ran down firewall & dripped right in there), causing a short which the OBD read as a miss fire.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.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,...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...Ford F150 Forum. The site for Ford truck owners, by Ford truck owners ... / Drivetrain. Modular/Triton V8 Engines: 4.6L, 5.4L (97-10) Looking for recent topics? 2003 4.6L runs rough; code says cylinder #8 misfire. 9 posts • Page 1 of 1. owkaye New Member ... Joined: Wed Feb 17, 2010 8:56 pm Truck: 1998 F-150 4x4 Super Cab 5 speed 4.6L Vin 6 ...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 ...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,...

Heres the background: 2015 F250 6.2 liter gasser. 138,000 miles. I just bought it used about 1500 miles ago. Drove it for maybe 1000 miles with no issues - ran smooth, no check engine lights, nothing out of the ordinary other than that the fuel economy was worse than expected (not that I expected it to be good - but it seemed that 11 mpg under ...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 ...1997 - 2003 F150 - 2001 4.6 misfire on one cylinder - My son in law has a 2001 F150 with the Triton 4.6 engine. It has 190,000 miles on it. A few weeks ago he had a misfire that set a PO302 code. He changed the COP on cylinder number 2 and that cleared the problem. Now he has a PO307, cylinder number 7 misfire. He and...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.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.

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...The claim was that sometimes Ford COPs failed in such a way as to cause electrical noise. This would cause a DIFFERENT cylinder to misfire. It might have been something along the lines of it caused another cylinder to fire early enough to screw it up when it got its actual trigger. Just something to think about.Hey everyoneIn this video I go through the process of diagnosing a misfire on a 2012 Ford F150 with a 3.7L.New Plug and new coil were installed and the misfi...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. 6 Cylinder Engines - 1992 F-150 Top End Mis. Possible cause: If a def injector the DTC will point to the test cylinder. 2009 - 2014 Ford F150 - Cylinde.