Spark knock
Thread Starter
Junior Member
Joined: Aug 2011
Posts: 1
Likes: 0
From: Huntington, Indiana
Car: 1989 Iroc
Engine: 5.7
Transmission: Auto
Spark knock
I bought a 1989 iroc z28 with 39,000 miles with a 5.7. It had 6 bad injectors and a spark knock when i bought it. so i replace all 8 of them and it still has a spark knock. But when i turn the timing way down it doesnt spark knock, any ideas.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: Spark knock
What is the stock setting for a car like his ?
Last edited by Ron U.S.M.C.; Sep 1, 2011 at 11:03 PM. Reason: add info.
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