89 yj 4.2L stock, 140,000 MILES ON IT I timed it by the book to 9 degrees. with the timing set, 30% of the accelerater travel has alot of valve tapping. I retarded it back to 1-2 degrees BTDC,(this is how is was when I bought it)and it sounds better (no more clicking).
my question is why is the timing no working when set to the factory specs?
I MADE SURE TO PUT THE TIMING LIGHT ON THE CORRECT PLUG WIRE, i ALSO DISCONNECTED THE VACUME ADVANCE AND PLUGGED IT, AND i ALSO DISCONNECTED THE ELECTRICAL CONNECTION ON TOP OF THE VALVE COVER, PLEASE HELP