Butch Davis wrote:
This is an outboard, right?

A 250 Cubic Inch 165 hp outboard by Mercruiser? No... this is an I/O
with a Chevrolet-based I-6 engine... which is why I question the
"pumping the fuel bulb" part of the problem...


Have you serviced your fuel filter lately? Has
any fuel system work been done recently? Is your fuel tank built in? If
so, perhaps some condensate has accumulated in the bottom and needs removal.
If a portable tank have you tried completely emptying the tank to ensure no
water is present? When did you last replace the primer bulb and or rubber
fuel hoses? Over time these parts can become pretty soft and will suck air.
Sounds to me as though you are getting a dose of water in your carb(s) at a
particular trim angle when barely on plane, ie. a steep trim angle.


2500-3000 rpm is moving at a pretty good clip with this engine, full-on
plane.

Rob




the mention of fuel in the tank.

Good luck with the problem.

Butch
"trainfan1" wrote in message
...

alfred pettersen wrote:

I am having an intermitent problem with this engine in my boat.

When I run at around 2500-3000 rpm and do some modest "wave hopping" in
Southern Georgian Bay, occassionally my engine just "dies" (stalls).

When I restart it and give it some throttle, it behaves like it is either
"fuel starved" or being "flooded".

Gotta figure out which one. It sounds like a fuel bowl level/float valve
problem, maybe in combination with a weak fuel pump and/or vapor lock.
Are you running your bilge blower?

Usually, the "fix" involves stopping the engine, opening the engine cover
and pumping the fuel bulb until line pressure is restored,

I have never seen a primer bulb on a Mercruiser - how did that get there?
This may be part of the problem... you may be sucking air into the fuel
sytem at the clamps, or the check valves are sticking or broken... the
bulb being there at all may be a sign of a previous problem...

Rob