TiGeRC|aw

I was just wondering what you guys could tell me about my engine with these spark plug pictures:













Are they looking alright after 146,500 miles? -90 GXL

Also, My battery keeps getting this black oil residue on the battery posts:





is that normal?

TiGeRC|aw

Also: The left pair of spark plugs is the rear rotor and the right pair of spark plugs is the front rotor

J-Rat

iTrader: (2)

I would say they look about average for plugs that have been in an FC for a while..

Icemark

battery clamps have been overtightened, but other thant that everything looks normal

matts86fc3s

does the car have powersteering? the oil residue is either from the p/s pump or from the oil metering pump. those spark plugs look like the car is running a little lean from the whitish/tan/brownish color... i would change them.

TiGeRC|aw

I just changed my plugs. These were the old ones. Thanks for the news.

vaughnc

looks like standard carbon buildup for 15K miles, get yourself a sparkplug cleaner. Rebuilt & blueprinted injectors will help a bit with the carbon buildup.