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rattling noise under acceleration...i really need help on this one 200

posted by  Smitty on  Sun Apr 4 05:08 CST 2004
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last visit: Sat Aug 9 22:44 CST 2014
[RELATED]

The 'pinging' you hear is more prone to occur at higher ambient temps (i.e., more likely in summer than in winter) and with lower-octane fuel. Try a tankful of premium gas - if the pinging goes away, then try the middle-grade at the next fillup.

After I put a VX cam in my '92, I noticed pinging. I switched to premium gas for warm-weather months and regular for the cold months. Now out in the desert, with a different gas formulation (more ethanol for most of the year), I use mid-grade most of the time and high-octane for the 3-4 hot months. Even when I drove 25,000 miles a year the incremental cost for premium gas (about 10 cents a gallon, maybe $2-$4 a week) did not strike me as a big deal. There are bigger leaks in my wallet to worry about.






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