Merc 3.0 135hp

whizzy

Recruit
Joined
Aug 3, 2007
Messages
3
Hey Guys,
First of all, new to the power boating scene and I wanted to say hi.
I have been on and driven lots but this is my first actual power boat that i have owned myself.

I just bought a 2001 Bayliner Capri APSIII with a 3.0 Merc in it.

The previous owner said it was fully winterized and care for properly, but has sat for approx the last 8+ months. I went over everything and you could eat off the motor it was so clean. As well as where the bilge was.
So I took it out last night and gave it a good run (Some slower speed lower RPM stuff) and then after I gave it about 30 mins of warming up, I thought i would try it out a little more.
I backed off the throttle, gave it a second, then punched it.
When I did this, it would choke out and almost seemed like it was going to stall. It seemed like it was either starving for fuel or getting too much, but not too sure. When I would back off slightly, then let the rpms kinda catch up, I could then give it more throttle.

All in all the boat ran quite well, and i am happy with it, I was thinking that maybe it has just sat too long and the carb needs a cleaning.
I was reading and it seems like some people use Ringfree and some people use seafoam to clean stuff up.

Any thoughts?

Thanks very much.
Sheldon
 

Limited-Time

Vice Admiral
Joined
Mar 30, 2005
Messages
5,820
Re: Merc 3.0 135hp

Welcome to iboats. If the boat sat for eight months the fuel is suspect at best. Do you know if there is a water separator/fuel filter installed (looks like an oil filter plumbed into the gas line). If so that would be my first check.
 

whizzy

Recruit
Joined
Aug 3, 2007
Messages
3
Re: Merc 3.0 135hp

Welcome to iboats. If the boat sat for eight months the fuel is suspect at best. Do you know if there is a water separator/fuel filter installed (looks like an oil filter plumbed into the gas line). If so that would be my first check.


Thanks for the info, I will check tonight and get back to you.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Merc 3.0 135hp

Could also be a problem with the accelerator pump in the carb, plugged up or ......
Could also be the engine needs a good ole tuneup. New plugs, cap and rotor and carb adjust.
 

whizzy

Recruit
Joined
Aug 3, 2007
Messages
3
Re: Merc 3.0 135hp

Hey Limited-Time, yes it has a fuel filter, I plan on replacing that, and doing what DonS had suggested as well and give it a tune up.

I did have it out over the long weekend here and it seemed to get a bit better with the warmer it got but was also never perfect.

Thanks again guys.
:D
 
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