swett

My #2 cylinder always reads twice the knock voltage of #3 and #4, which are very similar. #1 also reads high, but more intermittently. It tends to be twice as high under load, but close to normal at idle.

Is this 'normal', or within typical engine tolerances, and if not, does anyone know what might be causing it? I've tried changing the plugs and coilpacks already, so those two are eliminated.

-Ian

Uwe@Ross-Tech.com

indicating what values or differences between cylinders are acceptable in these fields. You might want to look at Group 20 at the same time to see how much the timing retard you are getting in the individual cylinders and how it correlates with the knock sensor voltages.

-Uwe-