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Engine cranks very slow when hot

Tiny
LGAKI
  • MEMBER
  • GMC
I have a 1985 GMC Sierra K3500 dump truck, it has a rebuilt 350 engine 5.7 litters, automatic transmission and has four wheel drive. The truck starts right up when it is cold but after I drive it for 5-10 minutes and try to start it it cranks very slow like the battery is drained and is very hard to start. If I try to charge the battery it says its fully charged. I have replaced the starter solenoid and cleaned all the battery connections. Do you have any other suggestion?
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Sunday, August 19th, 2007 AT 4:16 PM

1 Reply

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
My next door neibor had the same problem, with the engine rebuilt the started could not turn it over when hot. He replace it with a high torque starte and ended his problems. The present starter could be week or not operating correctly.
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Thursday, January 17th, 2008 AT 9:37 PM

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