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Spark knock....HELP!!!

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Spark knock....HELP!!!

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Old

Aug 17, 2001 | 09:25 AM

#1

dash8

Thread Starter

Instructor

Joined: Aug 2001

Posts: 120

Likes: 0

From: westmoreland n.h.

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Spark knock....HELP!!!

I've noticed some spark knock , or detonation,, what ever it's called. normal driving car runs great to about half throttle, but when i tromp on the gas i'm getting detonation. does anyone know if the timing needs to be retarded, or what about a spark retarder. Is there a vacum advance type that would work.. ????? :confused:

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Old

Aug 17, 2001 | 11:09 PM

#2

JAKE

Le Mans Master

Joined: Feb 2000

Posts: 9,715

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From: Kempner Texas

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Re: Spark knock....HELP!!! (dash8)

We need to know the year of your Vette and any mods you've made.

Jake

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Old

Aug 24, 2001 | 04:19 AM

#3

GlockLT4

Team Owner

Joined: Apr 2001

Posts: 22,267

Likes: 3

From: Dallas TX

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Re: Spark knock....HELP!!! (dash8)

If it's a 92-96, could be the optispark... like it was for me :(. at 2500 rpm and up, HORRIBLE missing and detonation.

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