Last summer I actually found a bad BJYL memcal. Yours seems just fine.
As an experiment, maybe disabling the EGR might help understand the source of the spark knock.
dave w
Last summer I actually found a bad BJYL memcal. Yours seems just fine.
As an experiment, maybe disabling the EGR might help understand the source of the spark knock.
dave w
Or the balencer has slipped and the timing marks are not accurate...
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
-= =-
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