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Hey everyone,
My car starts to ping(it sounds like a diesel) after it warms up(after a good 15 minutes of driving),running regular unleaded gas. When I put super unleaded the pinging stops.
I have ran the codes and nothing comes up and the timing is right on the money. Any ideas what's wrong? or do I keep running super unleaded?
When I got it would ping, then I started using Chevron Super unleaded and it went away. I then tried to downgrade to Chevron plus in hope that it would have gotten better but it started to ping a little, then I tried regular unleaded and the pinging became very noticeable.
you did pull the little plug before checking your timing right? if so then maybe you have a custom computer chip that is burned for premium fuel? or it could also be egr system