Re: [omc-boats] fuel pump issues

Yes, 4 to 7 pounds is pretty standard for autos as well - SeaFoam is an
additive you can get at most auto parts stores - it is made in Minnesota
and is great stuff - you can put a can in your oil, and unlike other
engine cleaners you do not have to change the oil - and putting a can in
your gas tank will clean it out as well. You can even hear old gummed up
lifters smooth out right after putting SeaFoam in the oil. I have had a
few electric pumps - used to buy the cheap ones for around $20 - they
never last long - expect to spend $40-$50 on a good one. You might stop
buy a Mitsubishi dealer and get the specks on yours from them? As for
the water filter, it will catch dirt etc. as well, but I would still put
in a good fuel filter. Good luck - Dave

jdood wrote:

> 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)
>
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> Also - what is "sea foam"?
>
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>
> 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.
>
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>
> I will disconnect and see how the flow is - maybe that will tell me
> something.
>
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>
> Thanks! jeff
>
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> -----Original Message-----
> From: owner-omc-boats@...
> [mailto:owner-omc-boats@...] On Behalf Of David
> Sent: Tuesday, August 15, 2006 5:45 AM
> To: omc-boats@...
> Subject: Re: [omc-boats] fuel pump issues
>
>
>
> First question - Did you put a new inline fuel filter in? remember
> these old gas tanks build up a ton of sludge - the fuel pump, which I
> am assuming is electric, should pump between four and seven pounds -
> and the pulsing is normal - I suggest you change (or install) the fuel
> filter, before the fuel pump, then with the line unhooked run the pump
> to see if the flow is good as crap may have plugged it up - put
> SeaFoam in the gas tank and have an extra fuel filter available as I
> will bet the new one will plug up fast. Dave
>
> jdood wrote:
>
> I have a Johnson deluxe with the 155hp Buick v-6 engine. Just to get
> things completely dialed in, I have been gradually replacing the "bolt
> on" engine stuff over the past few weekends. Starter last week. Fuel
> pump was this week's part. Ran great last weekend when I had it out,
> except that when it gets hot it won't restart (has been a problem for
> awhile). So in an effort to work towards solving that problem, (and
> just because I thought it would be a good idea), I replaced the 40 yr
> old existing fuel pump with a new one, and relocated it outside the
> engine compartment just to keep it as cool as possible. The previous
> FP seemed to work ok, however it had a copper line running right
> across the hottest parts of the engine to the carb. So I put in my
> new fuel pump, one that was supposedly "universal", took it out
> tonight for a spin. Started up ok. idled ok. cruised slowing away
> from the ramp ok. But when the throttle gets to about 1/3 throttle
> it just bogs down and doesn't rev any higher. So being that it
> accelerated just fine before I swapped the FP, it's easy to see that
> the new FP isn't doing what it should. I noticed the fuel lines kind
> of pulsing too, like it wasn't really smoothly getting fuel through
> the lines. So is this just a matter of fuel pump that is too weak?
> Too strong? Are there big differences between FP's? Is there some
> specific gallons per minute spec I should be following? Can anyone
> suggest a specific fuel pump out there I should use to replace my 40
> yr old one? Thanks - I am a fuel pump novice and need help!
>
>
>
> jeff
>

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Received on Tuesday, 15 August 2006