1999 ZR2 Blazer Starting Issues
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Joined: Mar 2009
Posts: 8,453
From: Belleville, Michigan
RPM needs to be snapped above 2000 and back to idle before the camshaft retard reading will be accurate. You can adjust it at idle, but I choose to do it with the engine off to avoid getting zapped from a faulty plug wire 
Then restart, snap above 2000 and back to idle, then recheck. Might take a couple of times, but it beats getting poked!
Then restart, snap above 2000 and back to idle, then recheck. Might take a couple of times, but it beats getting poked!
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