what is this on my COPs

aparker813 · Dec 15, 2005

thinkin one may have gone bad again recently so i was pullin em out to start testing and looked at the first two and they're not lookin so great

ponysarepretty · Dec 15, 2005

looks like burnt oil residue perhaps with some dirt stuck to it.

aparker813 · Dec 15, 2005

ponysarepretty said:
looks like burnt oil residue perhaps with some dirt stuck to it.

yea kinda smells like oil too....this cant be a good thing

aparker813 · Dec 15, 2005

alright i pulled the two plugs and neither have any kind of oil deposit so it may just be grime

ToplessStang · Dec 15, 2005

That is caused by water getting past the COP. Either from washing the engine or road spray.

TacBear · Dec 16, 2005

Water will get in there and cause some arcing which will look like someone held a lighter to it--that can cause mis-fires.

blkstangman88 · Dec 19, 2005

stupid question, whats the COP?

SLY GT · Dec 19, 2005

blkstangman88 said:
stupid question, whats the COP?

Coil-on-plug

pimpstar00 · Dec 19, 2005

what year is your car? My cop's look like crap due to the coolant leak, just like yours. Any fluid to go along with that grime?