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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

Won't start when hot

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Old Jul 10, 2021 | 03:56 PM
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Dlras
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Won't start when hot

I have 08 F250 6.4. When truck is hot and turn it off truck will not crank. All power is on but will not crank. After at least a half hour the truck will start. Both batteries checked ok. The first two times this happened I could jump start the truck. The last time today I could not jump start it. But after letting it sit for a time it started.
 
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Old Jul 10, 2021 | 08:05 PM
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Fefanatic
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Well, I understand that you checked the batteries but if you could jump start it then it's probably the batteries. Double check your battery post connections. If that's OK then you will probably be looking at replacing batteries. How old are they?
 
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