No spark!!!

ahendri

Seaman Apprentice
Joined
Jun 13, 2010
Messages
30
Help guys i have been loosing many hours of sleep over this boat... i got my starter off and bench tested it and it passed. the gear however will slide up and down on the shaft of the starter not sure if this is good or bad i dont know if it is just not engaging or what but when i get it in the proper location and inline with the crank shaft of the motor and try starting it it trips the master breaker not sure why or something maybe my wireing is wrong on the solenoid or something any ideas.. oh and when the teeth of the starter are not on in the proper position you hear a load roar of the starter like it is just spinning in place or something.. thanks i just want to get back on the lake as soon as i can
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: No spark!!!

What engine? We need make (not vendor), year, hp..... and serial number if possible...
 

ahendri

Seaman Apprentice
Joined
Jun 13, 2010
Messages
30
Re: No spark!!!

its a 1988 mercruiser 3.7l i dont know the serial number and its 180 horse i believe
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: No spark!!!

Do you have the service manual? If not, then you can download it HERE. That has a great section for the wiring and the starter.
 

ahendri

Seaman Apprentice
Joined
Jun 13, 2010
Messages
30
Re: No spark!!!

yes i have the service manual also i am having trouble triming the motor it is in the trailer position and the pump just clicks when i hit the trim button any suggestions??
 
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