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Old 07-23-2021, 10:14 PM   #4
Azzkker
 
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Drives: 2013 AGM ZL1, 99 z28, 89 iroc-z
Join Date: Jul 2012
Location: Decatur, IL
Posts: 249
You need to have the special tool kit to do this repair properly. If you have the ability, removing the covers and balancer will give you access to the timing marks to verify jumped timing and belt condition. Take your time and follow the directions to the t as it's easy to be a tooth off on the intake cam even with the special tools.

I have seen the crank gear be 2 teeth off with no cam to crank codes stored but have also had one of the cams be 1 tooth off and set a cam to crank code. The excessive long crank with no other failure indicators pointing to sensor or fueling issues points to potential timing problem.
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