Chevelle Tech - View Single Post - Rough Idle and Jerking at Constant Speeds
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post #11 of (permalink) Old Jul 30th, 17, 6:26 AM
Gtogeoff
Senior Tech Team
Geoff
 
Join Date: Mar 2015
Location: Australia
Posts: 1,865
Re: Rough Idle and Jerking at Constant Speeds

When checking for 12v with HEI, the engine needs to be running. Just turning the key to 'ign' & testing for 12v can give a false reading.
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