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92 blazer pinging


raider greg
01-02-2007, 08:38 AM
our 92 full size blazer pings when at cruising speed 25+ and we accelerate,recently replaced egr valve ,no check engine lite .HELP PLEASE
thanks:banghead:
DelCoch
01-02-2007, 02:23 PM
Sounds like the timing is advanced too far. Maybe bad knock sensor?

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