120 Force slow crank

[wayne lovin]

I just bought a 1990 Bayliner with a 120- Force out board. I brought it home and tried to crank it. It acts like it has too much compression and runs the battery down quickly. The starter also gets very hot. Just need some advice on where to start looking for the problem. I have cranked it 2 or three times. It runs excellent after it cranks.<br /><br />Thanks

 

[JB]

Re: 120 Force slow crank

Hi, Wayne.<br /><br />Measure battery voltage with and without the starter engaged. <br /><br />No load should be 12.6volts before and after operating the starter. When the starter is operating, it shouldn't drop much lower than 6-9 volts. If you don't get these numbers, charge the battery and try again. A bad cell could produce the symptoms you describe.<br /><br />What happens if you operate the starter with the plugs out?<br /><br />Sounds like you may have something binding and overloading the starter, or you may have a short in the starter motor windings.<br /><br />Let us know what you find.

 

[Olson]

Re: 120 Force slow crank

Wayne,<br />I could only wish that my Force engine had too much compression. As far as cranking goes, had same problem with my '86 125 HP. Hope you're not using a deep-cell battery. I learned the hard way. These types of batteries don't have the initial high cranking amp endurances. Engine cranked slow and I burned up the starter. Quite costly for a new starter. I purchased a marine starting battery with a very high cold cranking amp rating (overkill). Problem solved. Engine cranks quickly and fires much sooner than previously.

 

[dazed & confused]

Re: 120 Force slow crank

ALLEN<br />I'm having the same problem with my 86 35hp FORCE<br />what are you calling a deep-cell battery(automotive ?).What are you calling a marine starting battery.I appreciate all your help I'v already burned up 1 starter I have a new 1 on order.

 

[Olson]

Re: 120 Force slow crank

Dazed & Confused,<br />I purchased the deep cell battery at Costco Wholesale Club. Not sure if it was a Marine battery, but I know that it wasn't an automotive battery because in addition to the posts, it had a threaded stud protruding out of each post along with a wing nut. The marine starting battery is actually labeled "Marine" which I purchased at Battery Warehouse. It also has posts with threaded studs and wing nuts. Unlike the deep cell battery, It can deliver a large amount of juice up front for starting. A deep-cell battery is better for long-term electric demand of accessories that don't require much amperage. <br />Hope all this makes sense.

 

[clanton]

Re: 120 Force slow crank

Bend the battery cables, if they crunch when bending replace the cables, check in different places.

 

[JB]

Re: 120 Force slow crank

D&C and Allen:<br /><br />I am sure you meant no harm, but you have derailed Waynes thread to address your own issues. <br /><br />Not good protocol. <br /><br />You should start a new thread to offer your problem or question, not derail someone elses thread.

 

[wayne lovin]

Re: 120 Force slow crank

This is Wayne...<br /> Thanks for everyones help. I found all the info useful. I took your advice and pulled the starter. After taking the casing off the starter, I found that the brushes and part of the interior of the starter had crystalized. I took the starter to a marine shop, they advised that this was definitely my problem, they also advised that by smelling the starter you can tell if crystalization is taking place by the odor. They also advised if the starter is getting hot enough to sizzle when it comes in contact with water that more than likely you are getting too much friction inside the starter.Thanks again for all the advice! h