Starter/solenoid submerged

Mar 31, 2021
5
Bayliner 31 Nanaimo
Helping my brother get his boat going again after a partial submersion (floorboards awash) at the marina. He was working to free a plugged water intake of dead fish and did not get the seacock totally closed. The batteries were toast of course. After replacing the battery and cables, the engine will not start. (Universal M25xpb)
Are the solenoid and starter likely fried as well?
 
Jan 4, 2010
1,037
Farr 30 San Francisco
I wouldn't think so. Were they even submerged? I think my battery starter and solenoid would be above the floorboard level. Corrosion will be the issue.
 

leo310

.
Dec 15, 2006
646
Catalina 310 44 Campbell River BC
use the de-presure valve and try and turn the shaft by hand to make sure no water entered the engine. you can remove the starter and bench test it. if you need a new starter I do have a starter motor that you could replace it with.
 
Mar 31, 2021
5
Bayliner 31 Nanaimo
I wouldn't think so. Were they even submerged? I think my battery starter and solenoid would be above the floorboard level. Corrosion will be the issue.
Yes it looks like the water level was about half way up the motor for a couple of days before the marina staff noticed the list, cut the lock off and pumped the boat out.
 
Mar 31, 2021
5
Bayliner 31 Nanaimo
use the de-presure valve and try and turn the shaft by hand to make sure no water entered the engine. you can remove the starter and bench test it. if you need a new starter I do have a starter motor that you could replace it with.
Thanks, we will get in there and remove the starter. Is the solenoid integrated in these starters? Looking through the manual I don't see reference to it being externally located.
 
May 29, 2018
575
Canel 25 foot Shiogama, japan
The first step is to check the ignition circuit fuse.
Then each component from there back to the engine
 

dmax

.
Jul 29, 2018
1,168
Telstar 28 Buzzards Bay
If the starter was submerged it is either toast or will be down the road - this happened to me and the starter died 6 months later, in an inconvenient spot of course. You'll want to replace it regardless. But as others have said, the whole electrical system needs to be checked out.
 
  • Like
Likes: TomY
Mar 31, 2021
5
Bayliner 31 Nanaimo
If the starter was submerged it is either toast or will be down the road - this happened to me and the starter died 6 months later, in an inconvenient spot of course. You'll want to replace it regardless. But as others have said, the whole electrical system needs to be checked out.
Ok thanks everyone for the responses. Its beyond our abilities to change the starter. We will have to hire someone.