Question about 2000 Chevrolet Blazer

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I have the distributor out of a 2000 Blazer with 4.3L engine. Manual says to line up 2 marks on harmonic balancer with timing marks on front of engine with cylinder 1 at tdc on compression stroke. Can you email me some pictures so that I might find these timing marks on engine and balancer correctly. thank you.

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Its real simple on the harmonic balancer the outer ring has a line in it on the front of engine there is a timing tab that hangs over the harmonic balancer line up the line with the correct timing degree 4 6 or 8 but to check for compression stroke number 1 piston has to be up and both valves have to be closed hold your finger over the number 1 spark plug hole and have someone tap the key till air blows your finger off the hole line up timing mark on balancer it should be close now you could use a socket on balancer bolt now drop in distributor lining up rotor with the number 1 spark plug wire rotor should point towards number 1 spark plug on engine driver side front distributor wont be all the way down because it has to drop into oil pump shaft just turn engine over with a ratchet on harmonic balancer bolt one or two revolutions and distributor will drop right in to oil pump then install retainer and bolt for distributor then use a timing light while engine cranks to get timing close to start it then time it correctly after it starts

Posted on Aug 25, 2010


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SOURCE: i have a 92 s

Your best bet is to start over and pull the number one spark plug out. Tear off a small piece of paper towel that will be big enough to plug the spark plug hole. Plug it with the paper towel and then turn the motor by hand until it shoots the wadded towel out and you will be at top dead center. The only problem with this method is I have seen the outer part of a balancer spin a bit from the center because it is held together by rubber. Try that first though and see if your line on the balancer lines up. If it does, point the distributor rotor at number one. If the line doesn't line up when the paper towel shoots out, then you balancer has spun. You can try and stab the distributor at number one there, or get a new balancer and do the process all over again.
Hope this helps. Good luck!

Posted on Apr 17, 2011

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