Thread: Knock Retard when accelerating

Wanted to report back on my recent findings.

On a hunch, mainly from the ticking when first started, I had been off and on checking for exaust smoke at the rear of the engine but could never spot anything. I read somewhere about holding a tissue around the suspected area, I at first I didn't notice anything, until I lowered it far enough to reach the bottom of the exhaust manifold and sure enough the end of the tissue started moving with the RPMs. This, I assume, would explain the 30*+ IAT readings over ambient with the stock airbox. New exhaust manifold and gaskets are on there way. I don't know for sure right now if the gasket is bad, or if there is a crack inthe manifold, but I only want to do this once. This hopefully is the root of all my problems, but if not, it is at least the root of some of them.

Originally Posted by xxmattfxx

Wanted to report back on my recent findings.

On a hunch, mainly from the ticking when first started, I had been off and on checking for exaust smoke at the rear of the engine but could never spot anything. I read somewhere about holding a tissue around the suspected area, I at first I didn't notice anything, until I lowered it far enough to reach the bottom of the exhaust manifold and sure enough the end of the tissue started moving with the RPMs. This, I assume, would explain the 30*+ IAT readings over ambient with the stock airbox. New exhaust manifold and gaskets are on there way. I don't know for sure right now if the gasket is bad, or if there is a crack inthe manifold, but I only want to do this once. This hopefully is the root of all my problems, but if not, it is at least the root of some of them.

Thank you for the tip about using tissue. I will try it. Did your exhaust issue resolve your other performance /KR condition?