Starter disengaging (free spinning) after 1-2 seconds

ryno1234

Petty Officer 2nd Class
Joined
Dec 8, 2014
Messages
144
Having an issue with the starter disengaging the flywheel after about 1-2 seconds of cranking. NOTE: I have disconnected the ignition coil, meaning the engine is NOT trying to turn over, this is strictly the starter attempting to rotate the engine.

Backstory behind this is I had initially ground the teeth off my flywheel due to an ignition timing issue (engine firing opposite direction of rotation during starting). I just recently (2 days ago) replaced my ring-gear on my flywheel and finally buttoned everything up and am attempting to start my boat for the first time since then.

Below are the specs on the parts involved:
  • 305ci GM engine
  • New ring gear on flywheel as of 2 days ago, this is my first time attempting to start with the ring gear
  • Starter is 4 years old
  • New optima blue-top as of today
  • Attempted no starter shims, 1 thin shim, 1 max-thickness shim (skipped the middle-thickness shim)
The only ideas I have at this point are:
  • The starter, although very new in terms of "starts" (prob less than 50 in the past 4 years), might be toasted due to the fact that I previously ground the starter against the flywheel causing me to have to replace the ring gear on the flywheel.
    • Taking the starter to my local auto-parts store, they say it is "fine" by sticking it on their tester however.
  • I may need some shim amount different than I currently have tried (never needed this previously though)
  • I somehow installed the flywheel or ring-gear wrong. (doubtful as I had a professional install the ring gear and the flywheel is pretty much a no-brainer)
The best guess I have: Maybe the starter is toast.

Any idea?
 

ryno1234

Petty Officer 2nd Class
Joined
Dec 8, 2014
Messages
144
Just in case anyone landed at this thread because of a search for a similar problem, Bt Doctur was right. I purchased a new starter, and although my old one hadn't been used much and wasn't that old, I had still done enough damage to it that a new starter fixed the problem.
 
Top