I know that this has been talked about alot! I rebuilt my engine and, I tried to fire it up last night and, it would turn and not fire first I found my the # 1 spark plug boot was slightly disconnected and the other is it sounded like the timing is off.. I checked my timing marks and they look ok but, the previous owner put paint on the tooth of the gear so I am using those as my reference. The motor appears to be TDC (hard to tell through the crank pulley but looked good. also a little smoke came out of the manifold while trying to start it like it was trying to back fire

Is there another marking I can go by on the cam Gears?? and if you need to see what it sounds like here is a clip I found on you tube.
THIS IS NOT MY CAR

97 GS build in progress

Did you search the wiki?

http://www.2gnt.com/?d=PROPER_TIMING_MARK_ALIGNMENT

http://www.2gnt.com/?d=Timing_Belt_Replacement

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2012 2500HD LML

I did not search the wiki but, I am greatful that you provided me with the link on the wiki I am still unsure of how to use the wiki?? but, thank you that helps alot! also dose the wiki have vaccum pics I need to make sure i got that right too.

97 GS build in progress

Ok after further checking of the timing everything was perfict i check the holes in the Camshaft as well as TDC and the cam gears all looks to be ok so I did a spark check and 1,3,4 cylinders are Not firing # 2 did fire shocking the heck out of me. any Ideas of what I can check or do?

97 GS build in progress