Have you checked the float levels. If they are too low they will cause these
symptoms.
Bill Lawrence
>From: "Mick Vander Ploeg" <mvanderploeg@nc.rr.com>
>Reply-To: "Mick Vander Ploeg" <mvanderploeg@nc.rr.com>
>To: <healeys@autox.team.net>
>Subject: Re: Vapor lock?
>Date: Mon, 14 Aug 2006 18:51:22 -0400
>
>Thanks to Charley, Jim, & Alan for your replies.
>
>Here's a little more info in answer to your questions & suggestions:
>Fuel pump is new
>Fuel filter is new
>Fuel lines are new (from Doug Reid at 18G)
>Distributor is okay - good springs & breaker plate moves freely
>The car does run fine when running at a constant rpm on a flat level
>surface,
>but when I give it the gas the sputtering starts. The higher the RPM, the
>worse the problem.
>
>I did have the fuel tank cleaned and sloshed with that stuff that's
>supposed
>to coat the inside & seal it from future leaks. I wonder if that
>wonderstuff
>could've clogged the pickup tube? Is it correct that I should be able to
>see
>the fuel filter run dry, or close to it, if that's the problem? Anyone
>have a
>similar experience with a pickup tube getting jammed up with the tank
>sealer?
>Could be a good excuse for a new aluminum tank.
> ----- Original Message -----
> From: Alan Seigrist Blue 100
> To: Mick Vander Ploeg
> Cc: healeys@autox.team.net
> Sent: Monday, August 14, 2006 3:26 PM
> Subject: Re: Vapor lock?
>
>
> Mick -
>
> If your car is running well at slow speeds, it shouldn't be vapor lock.
>Usually with vapor lock, the symptoms dissapear when you step on the gas,
>because as fresh cold fuel starts getting pumped through the system faster,
>it
>has less opportunity to vaporize.
>
> It sounds to me either:
>
> 1) You have a clogged fuel filter or clog in the fuel line somewhere
>which
>is restricting fuel flow
> 2) Your fuel pump is not pumping enough fuel (maybe it's old?)
> 3) Your fuel tank's pick up is clogged with rust or some other type of
>crud
> 4) Your mechanical advance on the carburettor is not working correctly
>(maybe the contact breaker plate is stuck in place or some of the springs
>are
>broken).
>
> Good Luck!
>
> Alan
>
> '52 A90
> '53 BN1
> '64 BJ8
>
>
> On 8/14/06, Mick Vander Ploeg <mvanderploeg@nc.rr.com> wrote:
> Could someone describe the symptoms of vapor lock? My '57 BN4 has had
>a
> persistent problem of sputtering when under load. Idles fine, revs
>fine,
>but
> when given the gas to go up a hill or something, it'll run extremely
>rough.
> When I say rough, I don't mean rough like when one cylinder is not
>firing,
> it's more like a very rapid sputtering.
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