94' Merc.115 (S/W Series)

cuglem

Recruit
Joined
Sep 16, 2009
Messages
2
Boat will not Throttle over 3000rpms....Riding along last night and motor just died...when try to recrank, just a wierd buzzing noise...Battery fully charged..plenty of oil...Clueless on the suwannee
 

outboardnut

Petty Officer 1st Class
Joined
Oct 27, 2006
Messages
323
Re: 94' Merc.115 (S/W Series)

Hi
I would start with checking your spark plugs. Make sure they are not fouled.

Also you can maybe tell which cylinders you are having trouble with by running the motor with different plug wires disconnected. Do one at a time until you find the problem cylinder(s).

Do this and get back with us!
 

cuglem

Recruit
Joined
Sep 16, 2009
Messages
2
A Little More Info.

A Little More Info.

When we apply 12v directly from the battery +, - Positive post on starter-frame ground, we can't get the bendix to raise and engage with the flywheel. The solenoid has been bypassed as well. The bendix spins. When we raise it manually and engage it, there is not enough torque to turn the flywheel. Battery shows 12.1 Showed 12 on the dash gauge when it died in the middle of the river. Had enough juice to raise and lower the motor several times in the last day or so. When I took the flywheel cover off the bedix was up, engaged (probably from a prior starting attempt).
Will have the battery tested under a load in the next day or so. Shouldn't the bendix raise, engage, start and drop back down out of the way just like a car?
Is there a solid state voltage regulator and if so, where do I find it. I get the same readings across the poles on the solenoid that I get at the battery. There is a marine battery toggle switch used to run two batteries. We are currently running only one battery. It's running off of switch setting 2. Plugs have been checked. Maybe 100 hours on them since last plug change.
 
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