Originally Posted by
EagleMark
Kind of strange you just all of a sudden got 18 degrees retard? Rethink what you have done since just a little bit ago all you got was 1 degree... vacuum lines to new solinoid interfere with MAP reading? Power to soliniod from where? You've done a lot of work check ECM grounds...
Since you were operating accuratly it seems, then all of a sudden got 18 retard, what moved, is anything now hitting? False knock has been found in lifters yes, in exhasut pipes loose, in exhaust pipe hitting frame under toruque, since your getting it at 1800 I'm guessing motor torquing and something with all new exhaust is tapping frame or?
I even read on ThirdGen I guy got false knock from as far away as rear suspension bushing under load. Rock crawlers need to be tuned then knock turned off because when the frame or rock slider hits a rock it senses knock and retards...