Well I have a D16Y7 I have installed 20 over ZC pisons, I ran my engine about 2000 miles and then pulled my head off. The pistons and exhust valves are yellow....... I know this is not a good thing. How would I go about fixing this problem.

 

what do the spark plugs look like? might be running to hot, lean mix

 

Same as the pisons look it was not just yellow spots or nothin It was a bright yellowcovering the whole piston and valves

 

well yellow on spark plugs means high speed glazing. try using a colder spark plug. i'm not sure though if that would also cause the pistons to have yellow deposits

 

Well I know the pistons And Valves Arnt supost to be yellow.. lol