2017 Type r Missfire no code(s)

[KILURSkurse16]

Hello all!
i am having an issue where all of my cylinder's are misfiring, not bad to where it will trip a code or run rough. my OBD Scanner live data stream is saying its misfiring. cylinder 4 misfires more than the others by a good margin. cylinder 4 misfired 35 times in a drive lasting about 20-25 min 15 min of it was idling where you can tell somethings going on. engine sounds and runs just fine other than that. only modification i have is a PRL Intake that i just put in today. and yes it was doing this before i installed the intake. it had a K&N intake and had a little boost leak and now it doesn't after installing PRL. car has 8,300 miles. Any ideas? if i can attach the data stream i will. thank you!

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[jdm_mike]

No codes? Probably rusted spark plug and/or coils.

Need data to confirm

 

[ez12a]

Pull the coil packs and maybe plugs. Sometimes water gets in from the hood scoop during washes. A few members have had rust build up in the spark plug wells.

 

[KILURSkurse16]

No codes? Probably rusted spark plug and/or coils.

Need data to confirm

okay, i will pull plugs and sparks. thank you! i have tried to find a way to get the data off of my thinktool pros but cant seem to figure out how. i will try and find a way in the next couple days.

also if their is rust and such how would i go about dealing with that?
Thank you!

 

[ez12a]

with the coil removed and plug still installed, i'd blow any moisture/water out with compressed air. then begin by swapping the coil with another one from a working cylinder. See if the misfire follows the coil pack. Replace coil pack if it follows, replace plug if it doesnt.

 

[KILURSkurse16]

Hello all! I replaced spark plugs and also replaced the battery. And so far after idling for about 10 min no misfires of any kind. It did misfire once during warming up. After i restarted never misfires again. So hopefully its ok now! I will report back if not. I’m attatching pictures of the spark plugs. This car only has 8300 miles. They have a little oil burn residue by the looks of it. Look a tad darker for 8300 miles. Let me know what ya’ll think. I got that car at 1300 miles in december. I just drove from Oregon to ARizona and back.other than that i dont drive it to crazy but like to put a smile on my face from time to time lol.

 

[KILURSkurse16]

Hello all! I replaced spark plugs and also replaced the battery. And so far after idling for about 10 min no misfires of any kind. It did misfire once during warming up. After i restarted never misfires again. So hopefully its ok now! I will report back if not. I’m attatching pictures of the spark plugs. This car only has 8300 miles. They have a little oil burn residue by the looks of it. Look a tad darker for 8300 miles. Let me know what ya’ll think. I got that car at 1300 miles in december. I just drove from Oregon to ARizona and back.other than that i dont drive it to crazy but like to put a smile on my face from time to time lol.

Sadly it is still misfiring seems like all but 1 cylinder. I’m going to swap coils from known non misfiring cylinder. Still need to some more driving to make sure that 1 isnt misfiring. It doesnt misfire while idling anymore just misfires while driving normally around. Any other suggestions?

 

[blacklightning.fk8]

I've had code P02CF come up on mine recently, small misfire at idle and sputter during partial throttle. Code was injector related. I also tried changing spark plugs and swapping coil packs but issue stayed. I ran a bottle of injector cleaner and it seemed to have helped a little. Waiting to see if the check engine light will come back.

 

[Quip]

Plugs->Coils->Injectors


since you’ve changed plugs and only have one cylinder misfiring I’d check the coils/injector for that cylinder.

 

[SmokeGhost]

Not for nothing. But this is a direct injected engine. Excessive carbon fouling can create misfires as well.

 

[blacklightning.fk8]

Not for nothing. But this is a direct injected engine. Excessive carbon fouling can create misfires as well.

Might need walnut blasting?

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