Outer Limits 4x4 Board

my misses subaru leone keeps chewing spark plugs...(with in 3000K) wtf is the go here?? will take a pic of the plugs later to when i get a chance to take them out... they seem to have a heap of carbon build up on them... i have been here http://www.gnttype.org/techarea/engine/plugs.html but i can't match it... errrr stuck driving her pos till i can fix it

Have you had the fuel mixture checked? Does it have an auto choke? Is it sticking on? Assuming the leads and cap are ok excess carbon build up is likely to be due to incorrect air/fuel mixture. As the site says, a blocked air filter could be the culprit. If not sure about the air/fuel situation then probably get someone with a gas analyser to check it and adjust as necessary.

Is it a soggy wet sort of build up or dry black sandy build up?

One could be oil, one could be fuel, but unless its blowing smoke im going for fuel.

it's all sorted i only had to change the one spark plug.... it was oil buildup that was causing the problem.... i now have 3 spare plugs!!

thanks fellas

mickrangie wrote:they seem to have a heap of carbon build up on them...

So it turned out to be oil then. Rings?