Chevy 4.3L Boat Engine

neleh42 · 09-06-2009, 05:29 AM

Hi,
We have a GM 4.3lt V6 in our boat 1994.

The engine was running and began to make a noise, then it stalled. On investigation it was found that the starter motor had remained engaged while it was running and so damaged it. We installed another which has suffered the same fate. So obviously the problem lies elsewhere. Can someone shed some light on my problem?

Also I cannot find a wiring diagram that matches the engine, even though it is the same model.

Thanks

**Basementgeek** · 09-06-2009, 08:17 AM

Hi and welcome to TSF

Going to move this to the Automotive section since it is a 4.3L Chevy engine.

BG

**Raylo** · 09-06-2009, 08:26 AM

If you ruled out the starter motor return spring (which you did by replacing the starter), perhaps the ignition switch is broken so that it is keeping the start circuit energized when you release the key to the run position. Put the key in "run" and check to see if you are still getting +12v to the starter. You could disconnect the wire going the to the starter while checking it so it doesn't actually try to turn the motor over. Or you could do it w/o disconnecting it but if you do pull the coil wire so the motor doesn't start. Another possibility is that the starter pinion isn't lined up perfectly and is binding enough to not let it spring back. Might need to be shimmed....

09-06-2009, 05:29 AM	#1 (permalink)
neleh42 Registered User Join Date: Sep 2009 Posts: 1 OS: window xp	Chevy 4.3L Boat Engine Hi, We have a GM 4.3lt V6 in our boat 1994. The engine was running and began to make a noise, then it stalled. On investigation it was found that the starter motor had remained engaged while it was running and so damaged it. We installed another which has suffered the same fate. So obviously the problem lies elsewhere. Can someone shed some light on my problem? Also I cannot find a wiring diagram that matches the engine, even though it is the same model. Thanks

09-06-2009, 08:17 AM	#2 (permalink)
Basementgeek Moderator, Home Support Join Date: Feb 2005 Location: Central Ohio, USA Posts: 1,528 OS: XP Pro SP2/Vista Ultimate SP2 Blog Entries: 3	Re: GM 4.3lt V6 boat engine-starter motor Hi and welcome to TSF Going to move this to the Automotive section since it is a 4.3L Chevy engine. BG __________________ Donating to the forum keeps TSF free for all. Proud member of ASAP

09-06-2009, 08:26 AM	#3 (permalink)
Raylo TSF Enthusiast Join Date: Feb 2006 Location: Maryland, USA Posts: 525 OS: XP Desktop, Vista HP Notebook, XP Notebook	Re: Chevy 4.3L Boat Engine If you ruled out the starter motor return spring (which you did by replacing the starter), perhaps the ignition switch is broken so that it is keeping the start circuit energized when you release the key to the run position. Put the key in "run" and check to see if you are still getting +12v to the starter. You could disconnect the wire going the to the starter while checking it so it doesn't actually try to turn the motor over. Or you could do it w/o disconnecting it but if you do pull the coil wire so the motor doesn't start. Another possibility is that the starter pinion isn't lined up perfectly and is binding enough to not let it spring back. Might need to be shimmed.... Last edited by Raylo; 09-06-2009 at 08:28 AM.