So i bought my car 3 months ago and i haven't changed my plugs since. These plugs were on the car when i bought it and i've only put 2k miles on my car. It might be hard to see but there are some white stuff on the tip of the plugs and i'm not sure what that means.

Can someone tell me if these plugs are still good and what the white stuff means?

 

next pic. Oh btw the plugs are NGK double platinum.

 

all of them look the same except this one. It the tip is angled a bit on the left.

Thanks in advanced!

 

usually when theres a white residue on the plug its a sign of coolant buring.(id do a compression test just to be sure). alos if the plugs are brown your good. your plugs dont look bad, dont look like ur burning rich or lean, but if theres white id do what i said above

 

uh are you sure? I always learned that white stuff was normal. I would stay away from platinum and multi spark plugs. They suck. Regular NGK's are the best ive ever used. The bosch platinums make my car backfire and blow fire when i rev at idle. Multi spark plugs suck.