Boat won't crank

by Rick J

My motor turns over but turns over slow(2007 Mercury 90) like the battery is dead but its not. I tried a new battery and jumping it but nothing works. The only way to crank it is by pull starting. Any suggestions?

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Aug 14, 2015
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Same problem
by: Ramz

My boat acted like the battery was dead but the starter was smoking!! I bought a new starter and the new one does not smoke and will turn the motor fast for about 10 seconds then slows a lot like the battery is dead!!! New starter and brand new batteries and did not solve the problem! HELP PLEASE!

Mar 17, 2014
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Trouble starting
by: Bruce

Crank the motor over for a short period Then check the wires coming from the battery to the starter. if they're hot, they are drawing too much amperage. that means The stator inside the starter that spins around is trying to ground itself that means the bearings it is riding on are worn out. In other words you are trying to create a dead short across the battery that draws a lot of amperage and is also bad for your battery. Corroded battery connections will also create same problem with a motor trying to turn over to slow.
I hope that helps you I have had the same problem.

Jun 05, 2010
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Boat won't crank
by: Anonymous

you might want to check all connections for loose or coroded wire. if none next is to check starter.

Apr 23, 2010
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Crank problem
by: Anonymous

Hi
Sounds like a starter problem check starter circuit make sure all the battery cable connections are all good including the ground strap, Many starters will not turnover the engine if there is less than 10 volts from the battery aswell check this, it could be caused by cranking the engine alot or a charging system problem recharge the battery and test the volts from it.
Hope this may help you.
Nige

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