C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

pinging under load??

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Old Apr 30, 2008 | 04:42 PM
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goopysteve
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Default pinging under load??

My '86 vert pings under load usually in warmer weather. I run mid-grade 89 octane gas. anyone got a fix for this?? Thanks...
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Old Apr 30, 2008 | 07:17 PM
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Does it ping with premium fuel. Might need to check timing.
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Old Apr 30, 2008 | 07:35 PM
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Any codes set? If not, trouble shoot the ESC, anyhow. The ESC should trigger the ECM to suppress the knocking.

RACE ON!!!
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Old Apr 30, 2008 | 08:26 PM
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The knock-sensor should be stopping it but until you get that fixed: Use better gas and less timing advance. That will protect your motor. If it starts any pinging, take your foot out of it now. A little detonation can do a lot of damage. One more cheap thing to do. Add two bottles of fuel injector cleaner to the tank premium gas. If your fuel system is a little dirty, it could be leaning out under load. The computer should still stop the pinging, although obviously it isn't.
Take Care, -John
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