OC-46 Diesel - Starter rebuilt but still trouble starting ( gets sluggish quick)

[Ed Miller]

I got my starter rebuilt because it was only turning over very very slowly.   Now when I first turn the key, the machine turns over very well but within a second or two the turning over turns to a crawl and the machine won't start.  It's a new battery but I also jump started it and had the same problem.    Also tried directly jumping to the starter itself (to eliminate the wiring) and get the same behavior.    I took the starter off to take it back to the shop but just wondering if anyone else had this problem.    Also notice that there seems to be a mechinical clanking when the motor is turning over fast.   Didn't remember this in the spring the last time I started the machine, but it never turned over as fast back then.   Tried a little starting fluid but  this didn't help.   I'm getting black smoke as it turns over so I think it's firing.

Thanks in advance for any help

Ed

[hotratz]

Is it possible it's getting to much fuel and hydro-locking? I'm not familiar with diesels.
 

[Ed Miller]

Good news - I'm back up and running.   I brought the starter back to the shop.   When I talked to them, I told them it was for a diesel.   The owner noticed that the starter had a smaller armature than he would have expected for this application, and a coil part that had aluminum in it (not exactly sure what part he was referring too).   He found some heavier duty parts in the shop and put these in and it worked fine.   For people's reference, the starter rebuild initially cost me $120 and and the generator with a new voltage regulator cost me $160.   For the secondary work he did I offered to pay him, but he said wait until I found out if it worked  before I gave him more money.   Anyone needing a good electrical repair shop in CT go to Harley's Auto Electric in New London.  I have an electrical wiring question since I still get voltage to the generator with the key shut off - I'll start a new thread for that.

[Subgates]

Ed.

The guy at Harley's just fixed my generator for my OC-3 and it's running great! Thanks, I'm in Groton, CT.