misfire

Good afternoon, ill try and give as much detail as i can on this and TIA for any advice! A little info about the car - 2018 42k miles owned since 9k. No prior mods were done to the car except PPF Stock tune Stock motor Roush CIA without tune (installed 2+ years ago) 2 12" subs connected to one...

I am putting new spark plugs and injectors in and while I was doing that I decided to send a borescope into the cylinder that had bad misfire at one point due to VCT solenoid issues. I just want to know what you guys think, is it normal looking, does it look damaged or dirty? Any thoughts on...

Hi all, Just bought a 2019 Bullitt, 5000 km. After the purchase and short drive I've got check engine light and I did the following: Full maintanance service - oil change, engine flush, new spark plugs, filters, etc. Reset PCM (KAM reset), started with a proper adaptive drive cycle Monitored...

I just came across this issue. The car is having misfires and vibrations. I checked the plugs all seems to be fouled out or close. I changed them and the coil packs. Still getting the same result. No smoke coming out of the exhaust. I am getting a fuel smell though. Also oil is clean, car is...

does this look normal, I have been having issues with misfires so i decided to take a look at it, this is cylinder 2 the main trouble cylinder. My next step is compression testing it.

18' mustang gt pp1 on e85 intake and exhaust 100k miles So ive been trying to chase down this contant mis fire for a long it surges like its running a huge cam with no tune (just using this to explain sound ik coyotes and cams dont sound like that) all during idle, when i try to drive it or rev...

Hello, so I have been trying to solve this issue for the past 2 months. I had opg&crank sprocket, twin disc clutch lpx, and dss carbon fiber drive shaft put on, as soon as I got the car back starting the car became slower, 7 seconds for engine to turn on rather than like 3. I didn’t think much...

Recently I installed a McLeod RST Twin AL FW 8 bolt clutch (PN: 6335825) for my 2016 Ford Mustang GT Performance Package. Maintenance went smoothly and everything was done by the book. Upon driving my car I received misfire codes. Spoke with my tuner Lund Racing and they said to do a crank...

Hi everyone! I have a 2015 mustang gt with about 64k miles, its got a tune from lund but other than that its stock. ive been chasing a misfire for a while now that mainly happens at high rpms at wot and i finally got around to pulling all the plugs (again) and doing a compression test. heres a...

Hi to all! I have a 2016 Mustang GT California Special Auto. Long time since I've posted here. I've been having an issue where my check engine light would come on during long road trips - it only ever comes on when im on the highway and doing maybe 60-80mph between 1.5k-2.1k RPM. Every time...

I am looking for some advice on dealing with a misfire issue. Sorry it's a long post... but I think the details matter. A little history... the car is a 2019 Mustang Roush RS3 with an A10. It is a late build so it had the 2020+ phase 2 heat exchanger installed at Roush. The car is completely...

Afternoon all, I've been having issues with the car in the past few months and was just wondering if anyone had any insight as to what's going on here. I believe it is all tied together in some way. So, on the dead battery front, the car is randomly dying. It has died as fast as sitting at the...

Hello all, I have a 2019 Mustang GT 10 Speed. Car is not tuned and i have been afraid from all the issues I've had with it. I have had rough idles, stalling and bad shifts. Took it to ford dealers and they first diagnosed it by replacing Solenoid, told me to comeback if car was still...

I have a 2016 mustang gt with catless h pipe & roush mufflers. Car ran absolutely great (to be stock) until I did my Cobra Jet manifold, vmp 65mm twin throttle body, JLT cold air intake, except clutch & flywheel. Now I’m getting misfire codes in cylinder 4 & 7. I have already checked plugs...

Well, this wasn't the outcome I expected to getting my first mustang. About 3 weeks ago I saw a beautiful 2019 oxford white GT pp1 with only 15k miles on it which I couldn't pass on. My gf's father whose a car salesman at ford had helped me get approved and get the stang delivered to his...

Hey guys, so I’m having a cylinder 8 misfire CEL P0308. That’s the only code it’s throwing. I’ve read the other threads regarding P0308 along with P0300, but nothing I’ve seen about a fix for just P0308 by itself. Also haven’t seen anything regarding a fix for a gen3 coyote. Car has a rough...

I recently got a ported 18 mani and 47lb Injectors installed on my car. I also installed a p51 intake. The car is tuned by lund. I have trouble codes p0300 and p0316. The problem I have is that my cars rpms randomly go up and down. Also if I rev the car a bit while in neutral it will rise up...

Hello, I’m experiencing issues on my ecoboost mustang: P0303 Misfire with P0316, Misfire occurred first 1000revs. Coolant loss, but when it drops to min line, it stops losing. I ran engine on-demand test & get P1116 code ECT Sensor related. Car is stock, only K&N drop-in and exhaust after...

Ok, so I have a roushcharger stage 2 with catch can, oil pump gears, timing chain tensioners, harmonic balancer… the car is pushing 85k miles on the odometer. i blew out my clutch the other day while racing someone, ever since I replaced the clutch the car has had multiple misfire codes, p0300...

Hey guys another issue sadly so was driving the car check engine light came on and p0300 multiple engine misfires. I have new plugs in the car about a month old. I checked the plugs all looked fine and didn’t smell like gas so I don’t think I have a bad coil. I cleared the code and it came back...