Charged the battery, and still cranking way to slow.

[Newbie@boats]

I took my boat to the lake, cranked over fast like it should once, and would barely crank at all,took it home let it charge over night and still cranks extremly slow, look at all connnections and they are all tight and clean...Any ideas?

 

[pnwboat]

Re: Charged the battery, and still cranking way to slow.

Don't just look at the connections. You need to take all of the battery connections apart and make sure there is no corrosion. Don't forget the battery ground connection on the engine block. If all of the connections are clean and corrosion free, then I would suspect the starter itself.

 

[jaybirddog11]

Re: Charged the battery, and still cranking way to slow.

How old is the battery? It could be time for a new one.

 

[john from md]

Re: Charged the battery, and still cranking way to slow.

Is the engine starting ok otherwise? Does it smoke excessively or get poor gas mileage? If so, you may have a tear in your fuel pump diaphram. This will cause the lower cylinders to load up on fuel and this causes resistance against piston movement.

This is assuming you have done all the electrical cleaning and have had your battery checked with a high rate discharge tester or hydrometer.

John

 

[Newbie@boats]

Re: Charged the battery, and still cranking way to slow.

Figured it out, bad battery, put a new deep cycle in turned the key cranked like it should, took it out all day today no problems. Thanks!

 

[jaybirddog11]

Re: Charged the battery, and still cranking way to slow.

FYI, deep cycle batteries are mainly for trolling motors and such. You may want to exchange for a marine starting battery. Just a thought.

 

[Banditz]

Re: Charged the battery, and still cranking way to slow.

Agreed, deep cycle batts will not stand up to being sharged all the time while the motor is running. Not to mention, the thing will be alot more exspensive than a normal battery.