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1996 Chevrolet S10 Question: 1996 S10, 4.3L, 152k, Engine started pinging under moderate acceleration



tfr, 4.3L V6, Willoughby, OH, December 27, 2011, 11:43

No Check Engine Light. Have replaced wires and plugs. Chilton's Manual says that there are no adjustments with this particular ignition system.

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  • Answer #1

    December 27, 2011, 11:52

    could be an egr valve. too much temp in the cylinders. could also be a carbon build up as well. what kind of fuel do you use?? many possibilities.


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    tfr, December 28, 2011, 22:04

    I switched to 89 octane, but that made no discernible difference. Also it pings as soon as I start it and drive away while the engine is still cold.

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