Re: Timing Question
So, if you hit the bump switch when the engine is hot, ignition off, and it cranks slow, it could be too small of cable wire size from battery to solenoid to starter and from engine block ground to battery negative post. Wire size should be a minimum of 1 AWG. Goes without saying, the contact points of all terminals should be paint free.
Wire does lose its current carrying ability when hot. Same happens to the solenoid contacts, they get hot, and lessens the current carrying ability. Don't forget the starter solenoid contacts also.
Shoot the starter with a temp gun to read how hot it gets. I wouldn't think it should get over 130°F-140°F. If hot, you might cool it with a CO2 fire extinguisher, garden sprayer spray it with water, or blow it with a heat gun on cool. Get it to 100°F and try again. If it cranks over, then the starter is getting heat soaked. The thermal sheeting is not doing any good in protecting from heat soak.
Battery may be too small also.
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