Timing isssues

By rlowe
November 5, 2019 in Ask A GM Technician

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rlowe

Posted November 5, 2019

Hi, I installed a new crate engine in my 93 Cheyenne, a 6 cylinder 4.3. Set the ting to zero, disconnected tan wire and plugged vacuum hose. Started engine and when I put timing light on it went about 2 inches from zero. I need help figuring this out pleasr

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