RE: [omc-boats] fuel pump issues

Sea Foam is a fuel/oil additive. It's used for cleaning gunk out of your
engine and fuel system.comes in a white and red can and is usually found at
most auto and hardware stores. It's pretty good stuff.

4-7psi is common in carbureted cars, although it is also not uncommon to see
specs as low as 3psi and as high as 10psi. If it's a fuel pump for a fuel
injected application, you're going to run into trouble (they are much higher
pressure). Most "universal" pumps should be OK with that 2GC carb. If the
pressure is too high, it will overfill the carb and flood your engine, if
it's too low, it may not fill the bowl fast enough and you'll lean out at
full throttle (or hard turns), eventually stalling, then it'll usually start
right back up.

>From your symptoms, I'd look for a stuck choke first. If that's not it, it
might be leaning out (opposite of stuck choke), so check that the fuel pump
is more than dribbling fuel (pulses are OK, the shop manual probably has a
volume/min spec you could check but I'm not near the book right now), if not
that, then I'd suspect your carb float/needle/seat assembly is
malfunctioning, or something is stuck in a main jet. Those are my first
hunches..

Good Luck!

Tom

  _____

From: owner-omc-boats@... [mailto:owner-omc-boats@...] On
Behalf Of jdood
Sent: Tuesday, August 15, 2006 10:33 AM
To: omc-boats@...
Subject: RE: [omc-boats] fuel pump issues

Yeah, forgot to mention...before all this fuel pump replacement - a new
tank, lines, and fuel/water separator was installed. So the whole system
was pretty much new and pristine except for the fuel pump. The new fuel
pump was installed just AFTER the FW separator (downsteam). But something I
have wondered.does the fuel water separator take the place of a traditional
fuel filter, or should I ALSO have a fuel filter inline somewhere (another
boat vs car thing I am not sure about)

Also - what is "sea foam"?

Ok - so I need about 4-7psi - Is that typically what most automotive type
fuel pumps do, or could I have accidentally gotten a pump that does 1psi, or
25psi or something? The pump I got is new, but has a Mitsubishi symbol
stamped on the side. Not the pump I was expecting, and no literature
included - but perhaps could work anyway. I bought on ebay and am stuck
with it. I would like to use it if possible, but if I have to get something
else I guess I have to. Just want to make sure I get the right thing this
time.

I will disconnect and see how the flow is - maybe that will tell me
something.

Thanks! jeff

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Received on Tuesday, 15 August 2006