Pinging

[edford]

I got a new ping in Toots-a '92 with a little over 200k. Started before thinksgivings. I have adjusted the valves and that did not help. Seem to be there when I let off the accelerator. Lifter or rocker arm ping? It is not there at idle and when I get on it. Any idea?

 

[swankmetal]

does you truck have any mods? are you somewhere that sells winter fuel? do you additives?

 

[edford]

Drive in Kentucky and Tennnessee. Using no additives.