Starter

@rocky posted:

I also agree with Forest (and others).

if the engine is having a cranking issue at “hot”, it is not due to vapor lock.

it is due to reduced starter performance in the heat (increased resistance in the windings, as MJ said), reduced starter efficiency, or advanced timing (but JP said he is running 10* vs. 17*…

if the vapor lock theory was true, cars that ran out of gas wouldn’t crank, no matter how hot (or cool) they were!

Rocky

It might also be because you cranked the heck out of your engine and now your battery has run down…

😎

Hi. For my own education as I am running into a similar issue, why would the timing be impacted when the car is hot? Thanks in advance.

Edited this. Meant to ask about how timing is impacted by heat.

Shashi

Panteras run hot and the heat wreaks havoc on the electrical components.  Please read my entire post. My suggestion is to start small: check wiring, then solenoid and finally starter.

Weak battery as well.  I just had my battery fail in one cell.  F'd up the voltage regulator as well in doing so.  

Sashi -

The timing doesn’t change when the engine gets hot, but a car with more advanced timing is harder to crank (hot or cold) than one where the timing is more retarded.

As the starter (and the rest of the electrical system) gets hotter, it’s less efficient ( maybe higher resistance in the windings), and the engine cranks off a lot slower.

Rocky

PS…  JP probably already covered all this, but…