If starter works but then backs out and revs, what do I replace?

[hotrod53]

Would it be the "starter drive", is the starter turning too slow and needs replaced, or is it a benbix of sorts? I haven't fired the motor yet, but I know that was a problem the last time the last owner ran it, just trying to stay ahead of the game.

 

[Barnacle_Bill]

Re: If starter works but then backs out and revs, what do I replace?

Probably 95% of all starter problems is electrical. Is the battery fully charged? Check all your connections. They must be very clean and tight. Check the lugs very closely for any signs of corrosion. They can corrode inside where you can't see it and cause the problem you are having. If you know how to do a voltage drop test you could check them that way. Another way would be to temporally substitute the cables with jumper cables. If all the cables have been confirmed good, try jumping the starter solenoid. Just because it clicks does NOT mean its good. If you are sure the solenoid is good have your battery load tested, regardless of age. This brings you to the starter itself. Remove it and have it tested by your local auto electric shop. They can rebuild it for you if needed and save you some money. Let us know how you make out.

 

[hotrod53]

Re: If starter works but then backs out and revs, what do I replace?

The problem existed even with a new/fully charged battery. As part of my rebuild project I will be pulling all of the wires and cleaning the contacts anyway.

Thanks for the info, I hadn't thought of burnt contacts inside the solenoid.