[924er]

Hello guys, finally got a misfire after a good 12k miles which is how old my plugs are.

Cylinder 6 misfired on me on a cold start and again after work and continued to misfire until I restarted the car a few times.

So I swapped the cyl#6 coil to cyl#2. I've been trying to replicate the problem for 2 days and but no misfires. I can even go WOT with no issues.

So what's the deal? Did that coil just not like that specific cylinder? I was really expecting the misfire to follow or stay.

Could it just be a fluke?

Please share your experiences with me thanks

Btw I'm FBO on stage 0 Cobb

[jonas]

Was your coil/plug loose? There's a slight possibility it wasn't tight enough. But honestly, if the car is running fine, why go looking for problems?

[#Tee]

ive had misfire codes around 78k, i cleared the codes a couple times and it never came back (111k now) on same coils. i can feel a few misfires on cold startups til this day but its one of those things...if it aint broke.

[msjt]

Originally Posted by #Tee

ive had misfire codes around 78k, i cleared the codes a couple times and it never came back (111k now) on same coils. i can feel a few misfires on cold startups til this day but its one of those things...if it aint broke.

Probably leaking injectors if it's on cold starts.

[924er]

Originally Posted by msjt

Probably leaking injectors if it's on cold starts.

It's not consistent, and my crank times are pretty fast. plugs are barely 7k old.
It may a possibility tho.

[924er]

Originally Posted by jonas

Was your coil/plug loose? There's a slight possibility it wasn't tight enough. But honestly, if the car is running fine, why go looking for problems?

No it didn't feel loose at all, I just swapped them and never had a misfire after that lol

[924er]

Originally Posted by #Tee

ive had misfire codes around 78k, i cleared the codes a couple times and it never came back (111k now) on same coils. i can feel a few misfires on cold startups til this day but its one of those things...if it aint broke.

Does it throw codes when it misfires on cold starts? Or is it just one of those little things not enough to trigger a code?

Mine also does that but last time it was misfiring continuously until I restarted the car

[mike@x-ph.com]

Do a couple logs and see how this cylinder is reacting.
Same thing happened with me then misfire started happening again ( after 3 weeks) . I ended up changing all ignition coils

[#Tee]

Originally Posted by 924er

Does it throw codes when it misfires on cold starts? Or is it just one of those little things not enough to trigger a code?

Mine also does that but last time it was misfiring continuously until I restarted the car

it was a hard code one time..and i reset it. thing was when the car was brand new at 900 miles..i felt misfires on cold starts and its been like this til this very day. i never cared enough to look into it any further since the car drives nice.

[924er]

Ok so it misfired again on cyl 6, ruled out a coil. I checked the plug and realized the prongs were touching the electrodes. I don't think the dealership replaced this at all last time I went. Problem is now fixed.