Mystery Knock?

[darb]

Getting knock at anywhere from 5-15 lbs. boost. If I'm cruising at about 60 mph or so and just get into 5 lbs. or so, I start knocking. Whats up with that? This should not be happening. I am running a walbro 340 hotwired, afpr with pressure set at 41 lbs line off(getting 840's on O2's), THDP, Gary Mitchell 93 chip, Poston headers and crossover. The knock goes as high as 8 or so and my knock gauge lights up to the 2nd or 3rd amber light. What do you guys think? Suggestions please. You think a Powere Plate would help? I'm serching here.

Brad

 

[striker_29]

Well assuming its not false knock, you may want to investigate the cam sensor. Sometimes it can cause a mystery knock if something is flaky with it. May be worth looking into.