interesting any one ever hear of this before? On FBBO
Timing set one year ago, no ping. Just started pining the other day. Bad gas or accidentally put in 87/89 instead of premium....just a guess. Try pouring a gallon or two xylene or toluene in the tank. Use a funnel and watch your paint. Those paint thinners are 105/110 octane....and use one of those two, not just "any" paint thinner. If the ping goes way, then you've probably got low octane gas your last fill up.