If everything else checks out(bad key way,ect!)You CAN check the degree mark on the pully,but you will have to remove the rocker arms or back the adjusters all the way off. on #1 hole.(I know,REAL Pain in the @ss)You do not want interfereance with the valves and the piston stop.
But ,if you wanna do it,make a piston stop out of an old sparkplug with a bolt welded on the end of it.hand thread it in the sparkplug hole.Roll the engine one way GENTLY by hand unitll it touchces the stop,Make a mark on the pully right at the timimg pointer.Then,roll the engine back the other direction untill it touches the stop again,Mark the pullt at the timing pointer.
Take a flexible machinist ruler and measure between those 2 marks.Does the original mark fall DEAD between the 2??? If it does,hub is marked correctly.If not the mark IS off.
This is alot of trouble to check it this way,but does proove it out!.Your pully isnt "double marked " like some are for 0 deg AND advanced,is it,and one is just "covered up"???
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