Re: D16a6 problems
 

this a stock set up or you do anything to it or ecu before this happened? any other symptoms or sounds (surging, bucking, uneven idle, or misfiring)? double check your timing and plug wires themselves?

Re: D16a6 problems
 

Retarded timing at the distributor perhaps? (or the user ;D) That's usually a sign of it, or cam's off a tooth.

Re: D16a6 problems
 

werd, timing belt slipped a tooth or three.