I just bought a 98 Blazer with about 70K miles. It runs good execpt for a bad ping problem. I am living at an altitude of just over 9000 ft and I am running hi-octane fuel.
I assume the problem is either with the EGR system or the knock sensor. Can anyone tell me how to check these systems?
I would go down to a local auto parts store and buy a manuel, but since I live in Quito Ecuador, manuals are a bit hard to find.
DRW