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68gmsee · 11-05-2015, 07:59 PM

Yeah, it's always a good idea to check your distributor and timing. I once saw a muffler blow up because of bad timing.

If you're familiar with checking for TDC disregard below...

Insure the #1 piston is at TDC on the compression cycle. You can feel that with your thumb in the hole method or if you have the valve covers off, both intake and exhaust valve all the way up. Slowly rotate the engine until piston is at top of cylinder. Some use a piston stop for this. I use a thin dowel to feel the piston going up. Also, it's easier to rotate engine with all the spark plugs removed.

The h-balancer mark should line up with TDC then you just have to make sure the rotor lines up with the #1 spark plug connector on distributor cap.

11-05-2015, 07:59 PM	#6
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Possible fuel pump issue Yeah, it's always a good idea to check your distributor and timing. I once saw a muffler blow up because of bad timing. If you're familiar with checking for TDC disregard below... Insure the #1 piston is at TDC on the compression cycle. You can feel that with your thumb in the hole method or if you have the valve covers off, both intake and exhaust valve all the way up. Slowly rotate the engine until piston is at top of cylinder. Some use a piston stop for this. I use a thin dowel to feel the piston going up. Also, it's easier to rotate engine with all the spark plugs removed. The h-balancer mark should line up with TDC then you just have to make sure the rotor lines up with the #1 spark plug connector on distributor cap. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...