BoatBanter.com - 88 Evenrude, won't stay running?

Scotty,
I think the problem is the *OPPOSITE* of the one suggested by Steve.

Unless there is something special about this motor, that makes it operate
entirely different from the typical, the 'Priming Bulb' *does NOT*
pressurize the tank.

The system works on a gravity/siphon principle. Once the engine is running,
the only 'vacuum' created is in the carburetor 'bowl'. On the CAP of the
remote fuel tank, there maybe a small knurled knob. You have to turn it to
open a very small hole to allow EQUALIZING air to enter as the fuel is drawn
out. {On some tanks the cap comes to a 'wedge' shape . . . there is a tiny
hole, for a one-way internal valve}. You may already know about this knob,
but the valve may have become clogged, or stuck.

That is the SIMPLEST problem & solution. There may be a small leak in the
line or bulb {you mentioned that . . .}. It may be so small it only leaks
under pressure - internal or *external*. Anything in that part of the
'delivery system' that 'breaks the vacuum' BEFORE the fuel gets to the
carburetor, won't allow the 'siphon' to work. What the engine has to run on,
is only the fuel in the 'bowl'. {I run my small 6hp Evinrude {1992}'dry' at
the end of the day by disconnecting the fuel line . . . it is very
surprising how lone it runs on that small amount of gas}

While you are at it, I would change the fuel filter.

Any more questions, just give me a shout . . . I know we've talked before.
If I was closer, I would come over and help you, myself.

Regards & Good Luck,
Ron Magen
Backyard Boatshop
"Backyard Renegade" wrote in message
om...
Well I have an 8 horse Rude, 1988, pull start, great condition, maybe
75 hours on it. Had a problem today, had to keep squeezing the ball
until it leaked to keep it running, but it really did not work. As
soon as I try to idle or now push the choke full off, it seems to run
out of fuel. I cleaned the carb, from outside, and put in new plugs,
made adjustments, still the same. I have to pull the choke a little to
start it, then is searches for idle,levels off, then eventually
sputters to a stop. Good compression, good spark, timing sounds on,
etc... Just runs out or fuel I think, or the float is stuck, down? I
choke it, pump the ball, and she will run at partial choke and high
idle setting, but as soon as you push the choke in that last 1/8 inch,
or put it to idle, it slows to a stop, wants to stay running, just
won't.
So here is my quesion. Can someone tell me how the fuel delivery
system works with this external tank and hand pump ball to squeeze. Is
there a fuel pump on the engine, how does it work, diaphram,
venturi??? Anyway, the choke lever goes into a fixture with a couple
of lines to the carb, and a electrical lead, could this unit just be
clogged, is it a usual task to clean it? I have cleaned the valve on
the side of the engine that seems to direct the fuel from the tank.
Anyway, long day, hope this makes sence, where would you start, and of
course if you are on the CT shoreline and want to come by ;) I'll take
you fishin' when we get it runnin', Scotty from SmallBoats.com