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RE: Fuel pump problems?

To: "'joseph cianciotti'" <>,
Subject: RE: Fuel pump problems?
From: "Lew Palmer" <>
Date: Fri, 22 Nov 2002 11:58:11 -0600
When the fuel pump is working and is full of fuel, the clicking sound is
often dampened so that it cannot be heard. The clicking is the result of
the diaphragm snapping back against the pump body, so if there is some
back pressure due to the volume of fuel in the pump chamber, it does not
snap back quickly, thus very little if any sound.

My '80 MGB with a standard pump makes no sound whatsoever, but it pumps

Lew Palmer 

-----Original Message-----
From: [] On
Behalf Of joseph cianciotti
Sent: Friday, November 22, 2002 10:32 AM
To: Charles & Peggy Robinson; mg mailing list
Subject: Re: Fuel pump problems?

on 11/22/02 8:53 AM, Charles & Peggy Robinson at wrote:

> Hay Joe, what seems to be the problem with your B?  -- CR

For those who missed the original post, here it is (in abbreviated
> When I started the B this morning there was no familiar "click-click"
from the
> fuel pump. But the car started well and off I went. However on my way
> the car started hesitating like it was running out of gas and, in
fact, died.
> After cranking, though, it started right up. It hesitated a couple of
> times and even died again. But after a bit of cranking, it restarted
and I was
> able to get home.
> When I got home I checked to make sure the pump was getting
electricity and
> yes it was. I even turned the fuel pump off so the carbs would run
dry. When I
> turned the pump on, my clear fuel filter filled with gas. But the pump
> clicked on one occasion. But the engine never died on its own.

And here's some new info:

This morning, I checked the flow. It's fine and the pump clicked like
I then took apart all the easy to remove bits from the carbs. Cleaned
the float bowls. A little varnish in one of them, the other pretty
One of the gaskets was a little chewed up.  But everything else was
and moved freely. Took the dash pots apart, cleaned them to make sure
piston was moving freely and sprayed some carb cleaner into the needle
(can't remember what that's called.) When reassembled, the pump clicked
merrily and filled up everything. I started up the B and once it
out (I used a lot of carb cleaner) it ran well and the filter never went
dry. Drove it a bit with the turned off the pump. Then flipped it on and
clear fuel filter filled with gas. (sans clicking)

Not sure what's next. Seems to be working okay. I just won't drive it
somewhere important until I have this thing sorted out.

Any other suggestions? Still trying to solve the problem.

Thanks for all your help, past, present and future,

67 B Roadster

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