s2000maniac

[B]Hey guys...today I decided to pull the plugs out of my car to see the condition. I bought the car from an auction, its a 2003 w/130000 miles. the car appears to have been turbo-charged b4 because there is HKS turbo timer installed in the car. but the car appears perfectly stock, it seems as though nothing has been done to the car. anways the plug looks really bad, its sort of oily dark, and the top is white. it's a DENSO plug. I have posted pictures of the plug and I'm sorry I wasn't able to take up close pictures, my freaking camera is messed up. Also there is a little spring inside the COIL, is that suppose to moving around? Thanks
Also I looked inside the spark plug hole..and there is like "dark mud" all over at the buttom. I'm confused....help me out here guys....

s2000maniac

ohh by the way....the car idles fine and runs fine too....

Mondo131

Dark mud COULD just be carbon build up.

A glazed white plug is usually called "high speed glazing"



Can't see too well from the pics though.

energetic

Moving to S2000 Under The Hood.

zeroptzero

plugs don't look too bad. You likely have a spark plug seal leaking on the valvecover allowing oil to seep into the spark plug well. I would replace the spark plug seals - 4 of them, clean the spark plug well that is full of crud, and install new OEM spark plugs. If you have the valvecover open changing spark plug seals you might as well check the valve clearances.

The loose spring on the inside of the coils is normal that is how they are designed.