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Old 07-20-2011, 01:52 AM   #12
gchemist
BAD BOW-Silverado XST
 
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Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
Re: help with pinging noise, also cooling ??

Normal for a SB in hot weather. If you are constantly driving on hills, back off on the timing. Reset it to zero first. It may help. Use a can of seafoam. Carbon buildup on valves may also cause premature ignition.
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