Re: Engine will not turn over

Posted by Fish'n Jim On 2021/7/1 9:34:59

If starter's "good", wired right, has a good ground, and it's not turning with 6V, as designed, then there's something else wrong or the starter is not putting out.
In troubleshooting, exchanging parts is one way to diagnose faults. If no change, rules out as cause of the problem.

6V wiring has to carry more current to output the same wattage P=VA, so is larger. No power factor in DC. Doubling voltage produces/converts to more heat. V=IR Heat is not good for electricals. R is a function of temperature. higher temp = higher resistance.

Since it turns with pry bar, then it's not "stuck" per se, just difficult to turn. It should turn by hand, if normal.
There's a tool to turn the flywheel but can't always get it in there on the car. They only turn one way, opposite won't help, but technically the motor doesn't know the difference. They wear in the direction of rotation.
Could be many things, from simply gummed up to major malfunction. Guessing what it is on the internet won't solve nor diagnose your problem.
crystal ball; part or all tear down is in the near future.
If it's the L8, there's side cover to access the valve train.