Re: [omc-boats] fuel pump issues

From: David <odin@...>
Date: Tue, 15 Aug 2006 07:45:24 -0500

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

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