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GMC V6 and V12 Engines Engine repair and rebuilding

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  #11  
Old April 9th, 2019, 11:13 PM
James James is offline
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Default Re: Starter Issues

I had a similar issue. I turn out to be corrosion in the terminal at the starter. When I troubleshot the problem measuring the voltage drop across different section of the wires (power and ground wires) I noticed green around the terminal on the wire. I cut it off and installed a new terminal, problem solved.

While I was doing that I also found my alternator was not grounded good enough (have over .5 volt drop, should be near zero). I installed a ground wire from the alternator to the block. Battery is now getting a full charge. Engine now spin over a lot better.
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  #12  
Old April 9th, 2019, 11:13 PM
James James is offline
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Default Re: Starter Issues

The system had posted my post twice. I deleted the second post.

Hope you get the starter figure out.

Last edited by James; April 9th, 2019 at 11:19 PM. Reason: spelling error.
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  #13  
Old April 10th, 2019, 04:09 AM
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AZKen AZKen is offline
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Default Re: Starter Issues

You want to modernize? What stuff? Be more specific.
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