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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Slow cranking when starting

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Old Feb 24, 2005 | 10:50 AM
  #1  
PA79F150's Avatar
PA79F150
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From: Horsham
Slow cranking when starting

hey there guys i just got a 1986 ford f250. it has been sitting for a while and needed a battery so i but a new one in and did a tune up. When i try to crank it over it cranks slow the 1st few revolutions. it always starts but know this is not normal. what could cause this? The charging system is ok i checked it when did the tune up
 
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Old Feb 24, 2005 | 11:05 AM
  #2  
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84-250
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From: Munroe falls, Ohio
i would check the ground and positive wires for broken insulator, breaks, frays. just check every connection from the battery to the starter.
i upgraded my ground wire to a 1/0. on a warm engine i can just tap the starter and shes running.
 
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Old Feb 24, 2005 | 12:18 PM
  #3  
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I would check the wires for corrosion also and maybe replace the Solinoid could be bad also test voltage to starter.
 
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Old Feb 24, 2005 | 12:23 PM
  #4  
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bigredtruckmi
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check to see if the starter is getting hot while cranking. Might have a problem here if the above doesn't work. Also check the battery connections to see if they are getting hot or sparking.
 
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