EST Wire To time the Engine
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Professional Mechanic
Professional Mechanic
Joined: Nov 2008
Posts: 2,950
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From: Bowie, MD
Do you have a vortec engine? Black plastic intake with t-body in the middle? If so there is no wire and you can not set ignition timing with a light it is computer controlled. Turning the distributor is used for fuel injector timing and syncs to cam and crank sensor. It must be done with a scan tool that shows data.
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gunner5
Silverado, Sierra & Fullsize Pick-ups
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Sep 22, 2009 5:08 PM
