You are correct on two counts. I should suck the line first to
confirm the blaockage or maybe even clear the line. The MityVac can
exert much more suction on the line than the pump can. When the tank
was restored by Renuzit, it was coated inside and out. Part of this
process is to remove the small screen filter in the tank so it does not
become clogged with the coating. If there is any thing that might get
stuck in the fuel line in the tank it can get pulled right into the
line.
Secondly you are correct abut a filter in the axle area. There is
none now. This too shall change.
Mike MacLean Supercharged 60 Sprite
Michael Lupynec wrote:
> Before blowing out your fuel line you might first suck on it with
> the mighty vac just to confirm your suspicion of blockage.
>
> Air leaks on the suction side are critical. Your pump may be OK,
> but I was trying to point out that if you didn't physically
> compare the rebuild kit to original components, your pump could
> have assembled together looking excellent but with the diaphragm
> in a displaced operating range. In my case the vertical actuator
> looked exactly the same except for a slight length difference. And
> also that even after a good bench test, the suction on the tongue
> test failed so slightly and revealed an otherwise imperceptible
> diaphragm leak.
>
> I also put one of those big metal can fuel filters in the axle
> area.
>
> Mike L(Gremlin Hunter)
> 60A,67E,59Bug
>
> ----- Original Message -----
> From: Mike MacLean <macleans@earthlink.net>
> To: Michael Lupynec <mlupynec@globalserve.net>
> Cc: <spridgets@autox.team.net>
> Sent: August 28, 2001 1:17 AM
> Subject: Re: Can't Win For Losing... The Saga Continues!
>
> > Mike,
> > The pump on my car is THE lever pump that came with my car
> from the
> > factory, or at least it is an original AC Sphinx Y type pump
> that
> > Bugeyes were equipped with. Point taken about the aftermarket
> rebuild
> > kit. The generic rebuild kit that was installed in my pump last
> year
> > was made in the early 70's by a German manufacturer. Not Asian
> Frank.
> > The fit of all the parts was excellent and the pump has worked
> > flawlessly until it started leaking this past weekend. The leak
> turned
> > out to be only loose screws that hold the halves together and
> sandwich
> > the diaphragm membrane between the halves. This sandwiching is
> > two-fold. It seals the two halves and it also holds the outer
> edge of
> > the membrane separating the two chambers. Possibly this
> membrane is
> > ripped, but just Saturday it was in one piece and looked to be
> in good
> > shape. There may be something clogging the top chamber under
> the
> > screen. When I took it apart Saturday, there was a large piece
> of lint
> > in the screen that I removed. This lint may have reduced the
> efficiency
> > of the pump and removing it may have made the pump pull better.
> Maybe
> > better enough to pick up something in the line or tank and clog
> it all
> > over again. Just speculation at this point. I do not suspect
> the
> > pump. The first thing I will do is to remove the top cover and
> look
> > under the filter screen for more gunk. If nothing is found
> there, then
> > remove the line from the tank and reverse flush it, possibly
> with some
> > gasoline and my MityVac. If that clears the line then the tank
> needs to
> > be drained and cleaned out so the line won't clog again. All I
> know is
> > it is somewhere btween the pump and the tank and maybe it is the
> pump or
> > the tank. Fun, fun, fun.
> > Mike MacLean Supercharged 60 Sprite
> >
> > Michael Lupynec wrote:
> >
> > > Used to suspect fuel delivery problems with my aftermarket 948
> > > non-lever fuel pump. After a long down time (2 weeks) it would
> > > take forever to fire up. But the pressure and volume tests
> were OK
> > > once primed. Fooled me for a long time.
> > >
> > > Eventually bought a used original lever pump, mainly to get
> that
> > > priming lever. The lever pump had a deficiency so I pulled the
> > > guts out of the aftermarket pump to put into the lever pump.
> > >
> > > The rebuilt lever fuel pump bench tested OK, but I spotted
> that
> > > not all the parts were quite interchangeable. I remember that
> the
> > > vertical actuator and other relevant bits were dimensionally
> > > different, but not enough to notice on casual reassembly, so
> had a
> > > go at it again being careful to pair up some of the bits. Me
> > > wonders how many lever pumps have been rebuilt wrong by some
> DPO,
> > > especially if the rebuild kits can be easily misapplied.
> > >
> > > Paid utmost attention to all possible fitting suction leaks in
> the
> > > whole fuel delivery system between the pump and tank,
> including
> > > the little one way fuel pump valves.
> > >
> > > Was just about to install the proudly converted lever pump
> when I
> > > started to suck on one of the ports - it did not suction hang
> off
> > > my tongue for very long - proceeded to find an otherwise
> > > undetectable leak between the gasketed top cover and main
> body.
> > > Sometimes you gotta be one lucky Detective Colombo.
> > >
> > > Runs great now and that priming lever is sooo handy.
> > >
> > > Mike L
> > > 60A,67E,59Bug
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