wont crank when hot

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  #1  
Old 02-24-05, 07:35 AM
jn
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wont crank when hot

A friend of mine came to me with this, (he has an old 60's era chevy with a 350):
The car cranks and starts fine when cold. When it is up to temp and gets shut off, if you try to restart it while it is still warmed up its cranks REAL slow or not at all.
I was going to check timing...any other ideas?
 
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  #2  
Old 02-24-05, 10:21 AM
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hi check timming and dwell gap on points
also get a starter draw on the stater.
check battery cable for good ground and clean connection

cheers
 
  #3  
Old 02-24-05, 11:03 AM
scan
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had similar trouble

I had similar exp with a 68 firebird w/ a 326 ho engine

It would srun great but after sitting it would crank REAL slowly

Finally put a meter on it and it showed a constant voltage drain that NO ONE could locate.

I put a quick disconnect switch on the battery and that solved it
 
  #4  
Old 02-24-05, 11:46 AM
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check the spark timing, it may be too far advanced
 
  #5  
Old 02-24-05, 02:33 PM
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It may be overheating or the starter could be bad.Also the previous things that were listed.
 
  #6  
Old 02-25-05, 08:07 PM
claims guy
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Agree with previous posts; one less likely (but still possible, given age of vehicle) possibility is that the engine could have enough carbon buildup on piston crowns to temporarily raise compression just slightly when hot, thus making it harder for starter to turn engine over; this could cause an overheating concern as well.
 
  #7  
Old 02-26-05, 03:23 AM
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I had this happen to me recently with a newer car. Needed whole new distributor.
 
  #8  
Old 03-01-05, 10:43 AM
jn
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It was the starter...thanks all!
 
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