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Re: Vapour lock problem. Was won't start

Subject: Re: Vapour lock problem. Was won't start
From: Don Walton <>
Date: Mon, 17 May 1999 17:18:42 -0400 (EDT)
This could also be caused by a fuel tank full of rusty crud, the pick-up
tube could be clogging up and cutting off your fuel supply and after a few
minutes of no pump pressure the crud will fall away form the tube and your
car will start again.  I had this happen to me on my 73 B when I got it.  I
cured mine with a new fuel tank but I have also fixed my 74 B with POR 15
gas tank sealer which IMHO works very well.  Good luck...Don Walton

 03:07 PM 5/17/99 -0300, you wrote:
>You may recall I was having a problem with my car quitting on me.  I can let
>the car sit for about 15-20 minutes and it will start again.  I have finally
>concluded that it must be a vapour locking problem.  I have checked the
>ignition system and find it to be working properly.  The reason I believe it
>is a vapour locking problem is that when it happens the car first will
>hesitate and not hold speed for about 20 seconds and then quit (using up the
>gas in the float chamber?).  At the same time the pumps sounds like it is
>going crazy pumping.  I should mention that it is not an SU pump and I don't
>know what pressure it is pumping at, but there is no smell or signs of gas
>in the engine compartment of around the gas tank.
>If it is a vapour lock problem how do I go about further diagnosing the
>problem in terms of where exactly the problem is originating at (is it at
>the pump or under the bonnet)?  Could the wrong pump be inducing my vapour
>lock problem?

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