not enough power to starter

stevecut55

Cadet
Joined
Aug 27, 2005
Messages
13
Out on the water motor was running fine, then motor died. tried to restart and starter spun very slow batteries are new, saw corrosion on seloniod cleaned connections, nothing. got towed back to ramp went home first reaction seloniod was bad, replaced seloniod, same problem. re-checked positive leads, fine then went to ground stud there were 3 leads attached to it, one for the main, one from the wireing harness and another that was broken, i can't find a wire that could of broken off of this there are no stray wires. I put these wires on the ground stud and i wouldn't of left a connection that didn't do anything. My question is what wires come off the ground stud, and where should they come from, i've check my omc manual and can't find the answer. Anybody with an idea?
 

crxess

Chief Petty Officer
Joined
Apr 30, 2009
Messages
559
Re: not enough power to starter

Did you have any auxiliary equipment in the boat that has been removed? (fish finder/radio/etc.) Should not effect starting circuit.

Start is a big circle. Batt+ - Big 12v+ cable to - Solenoid to - 12v+ Cable to - Starter = Starter grounds to engine - Engine 12- wire to Battery.

Ignition only closes the solenoid contacts. everything else is in the loop.

Check battery condition - charge if needed
Check all cable connections.

Bypassing the solenoid with pliers or a large INSULATED wire held on the contacts - USE CAUTION - will confirm if it is good or failing.

If everything is clean, battery has good charge and solenoid bypass yields same results, starter is failing or engine is binding up.

You might also pull the starter and clean the mounting surfaces to insure a good ground path.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: not enough power to starter

90% of starter problems are bad connections. remove and clean both ends of the battery cables, so that they are shiney, also the cable from the solenoid to starter. check for nicks in the cables. and make sure the connectors are on the wire good. the cable tend to corrode from the inside out, if nicked, corroded wires, and connections, heat up and cause resistance to the follow of electricity, thus the starter doesn't get enough. you can also take jumper cable pos battery post to large post on starter. with a good connection, the engine should spin. then if the starter is good clean everything and retest. then trouble shoot solenoid. starters can be rebuit at a starter/alternator shop, much cheaper than a new one.

also have the battery load tested at the auto parts store, free, i've had new batteries go bad
 
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