Date: Fri, 23 Oct 1998 07:58:34 -0400 From: Kirk Johnson <kirknopsamguy.com> Subject: Knock Detection
I've recently did a head gasket job on my '88 spg. I had the head worked, shaved and the valves done. After the first test drive, I found that I had no boost. After checking through everything in the system, I found that the knock detector is detecting knock. If I unbolt it from the block and move it out of the way, I get full boost back. Now when I took the cams and the timing chain apart, I did not mark the chain or the gears. The haynes manual said to assure that the mark on the cams lines up with the "v" on the cam bearing, when #1 is at tdc. Which it was. I know the knock sensor it good. I tested on my other car, and it works normally. Now, if I am off by one tooth on the timing chain, would this cause knock? If there a process to get the chain in the correct location? What may cause knock detection? Any help would be appreciated. Thanks, Kirk
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