Question about 1991 Chevrolet S-10

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My 1990 chevy s10 pickup 2.5 litre is detinating.

I was wondering what causes it and how can I fix it!?

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  • Anonymous Jan 24, 2009

    it pings going up hills, and I have to run 94 octane for it not to ping

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Can you give me some More info. on this Problem????

Posted on Jan 21, 2009

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