2005 F200- slow turn over

[selmahotrod63]

My 2005 F200 turns over very slow when engine is warm. Cold it turns over very fast. Batteries are good. Any Ideas? Bad starter?

[robert graham]

Remove, inspect, clean, grease and tighten battery cables.....

[99yam40]

how do you know your batteries are good?
did you load test them?

have you checked your charging system on motor to make sure it is keeping the batteries charged while under way?
maybe you keep the batteries on chargers at the dock so they are good 1st thing but run down while under way.

you can always test battery voltages cold and warmed up to see if they are changing.
Voltage drop test to make sure cables and connections are all OK would be a good idea also

[oldmako69]

Exactly what they said.

A VM test of a battery means little unless all you want to do is power some LEDs. Get it load tested. Clean everything, even the hidden connections in the bilge.