Timing Marks For A 94' Chevy Blazer, V6, 4.3L, Vortech




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Brian Mitchell: I've never had that problem, u could try that but be carefull it's not an interference motor you could bend the valves or worse. Good luck. 

7351rick: I have a problem with a 4.3 in a 2000 GMC. It has 164,000 miles I believe it to have the original timing chain so I am thinking my misfire P0300 is because of chain stretch. I also had a leaky lower intake manifold gasket and water in the oil. So I had to remove the distributor in order to replace the gaskets. I have it installed correctly. It did not misfire as bad before replacing the gasket. However before if I revved up the motor and released the throttle it would stumble and die. I also have a P0122 and a P1122 TPS cods. I asked the dealer about reprogramming “relearning” the computer timing and they said that that is not necessary on a 2000 GMC 4.3? So, my question to you is can I elongate the distributor hold down clamp hole in order to adjust the timing as in a 1995 and older Vortec?

Mark Edwards: Any ideas how to make sure the balance shaft is aligned correctly? Thanks - also, I didn't see a tensioner for the chain in there... is that right or am I missing it? Thanks!

Brian Mitchell: You can pull it off and then trim the corners

Finnigan9: If u don't take the oil pan off be DAMN SURE to not let ANY gasket or other debris fall into the pan. It can stop your oil pump, then you'd be taking the pan off anyway and maybe doing a lot more engine work. I've stuffed rags into the gap, musta got some debris in it anyway cause I still ended up with a jammed oil pump.

Brian Mitchell: Any model with a balancer shaft also has alignment marks for it

Brian Mitchell: This model has no balancer shaft and there is no chain tensioner most timing chains don't have tensioners they usually have guides

Brian Mitchell: I was told by a Chevy dealer mechanic that you don't have to put it on #4 cly. You can have it on #1 or #4 or #6 it doesn't matter, it'll still be in time.

Brian Mitchell: I agree with @Finnigan9 I should have mentioned that. Sorry.
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Timing Marks for a 94' Chevy Blazer, V6, 4.3L, Vortech 4.3 out of 5

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Timing Marks for a 94' Chevy Blazer, V6, 4.3L, Vortech