45hp Merc spitting/jerking

[sbulla]

Last season my motor ('86 45hp merc OB110011) started spitting through the carbs while idling and had a jerk associated with it.

While I had it put up, I installed carb kits because the bottom carb always leaked and flooded since I bought it and it looked as if it had never had any work done on the carbs. The work cured the flooding/leaking and the engine starts right up but, while I let it idle (in neutral and on muffs), it'll spit back through the carbs occasionally and jerk a bit.

What do y'all think is the problem? I called a local mechanic and he seems to think it may still be the carbs or reed valves.

Sonny

 

[Laddies]

Re: 45hp Merc spitting/jerking

First free reving don't do or show anything and it can break a reed, it sounds like the engine is just a little lean put it in the water and in gear adjust the mixture you can't do it without load and back pressure

 

[sbulla]

Re: 45hp Merc spitting/jerking

First free reving don't do or show anything and it can break a reed, it sounds like the engine is just a little lean put it in the water and in gear adjust the mixture you can't do it without load and back pressure

Thanks for the reply.

I never let the rpms get over 2K when running on the muffs as per the mechanic's instructions that I bought it from.

This spitting started last year as I was coming in from fishing and idling back to the dock. The engine runs fine in the water at anything over idle speed.

I plan to take it for a run soon so, I'll see if it can be adjusted out.

Thanks again,
Sonny

 

[Faztbullet]

Re: 45hp Merc spitting/jerking

Has it ever been hot or had a impeller failure???

 

[sbulla]

Re: 45hp Merc spitting/jerking

Has it ever been hot or had a impeller failure???

Not while I've had it and the PO, by the way everything looks, apparently took very good care of it and didn't use it a lot.

Sonny