Thread: 1991 s10 p/u spark knocking
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Old 04-19-2008, 09:20 PM
wgazelda wgazelda is offline
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1991 s10 p/u spark knocking
I have a 1991 s10 2.5 4 cylinder pick up and it is spark knocking. The only way I can stop it is to use premium gas. It has 170,000 miles on it. What is the best way to solve this problem
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