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Old 11-01-2017, 03:08 PM   #16
sweetk30
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Join Date: May 2012
Location: horseheads,ny rust belt
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Re: School me on big trucks - 89 GMC 6000

Quote:
Originally Posted by Bagd72Chevy View Post
So we went and messed with it some more. New battery and electrical system seems to work. Truck came from Arizona/SoCal area by the maintenance log I found. Engine was replaced in 1998 and has ~30k miles since. The bad is the engine is locked up. It tries to turn over but I have a feeling it has some rust in the bores. Im going to pull the plugs and oil up the cylinders to see if it might break free. It seems like it wants to. I would love to get it running as is we can. Also putting air in that shrader valve does put air in the tank and pick up the rear of the truck. I noticed the compressor does not have a clutch on it??
air brake or suspension compressors in this use are full time run units . they have a bypass built in when psi is reached so they dont over pump .
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