If there are truly "air bubbles in the pump" then there is an air leak on
the suction side of the pump. Right?
Plugging the pick up side of an S.U. pump simply stops the pump, so the pick
up in the tank is not plugged.
Ed
----- Original Message -----
From: "Max Heim" <max_heim@sbcglobal.net>
To: "MG List" <mgs@autox.team.net>
Sent: Sunday, June 22, 2008 7:43 PM
Subject: Re: [Mgs] Fuel tank problem--ideas?
> Having a filter before the pump might in itself be the problem.
>
>
>
> on 6/20/08 9:29 PM, Stuart MacMillan at macgroup@comcast.net wrote:
>
>> Yes, the tank is vented, and I've left the cap off and it makes no
>> difference. The pump can't suck fuel out of the tank on a regular basis,
>> so
>> the suction creates bubbles in the pump, that's what I mean by
>> cavitation.
>> I think there is some debris in the tank that partially plugs the pick
>> up.
>>
>> I have a clear filter before the pump, and it doesn't look clogged. I've
>> seen this once before in the '80's, when a piece of surgical tubing was
>> stuffed back into the tank after someone siphoned gas during the last gas
>> "crisis". After a few years, the thing dissolved into swollen goo
>> particles
>> that clogged the pick up intermittently.
>>
>> I guess 43 years is enough for a gas tank.
>>
>> Stuart
>>
>> -----Original Message-----
>> From: Ed Woods [mailto:fogbro1@comcast.net]
>> Sent: Friday, June 20, 2008 5:41 PM
>> To: Stuart MacMillan
>> Subject: Re: [Mgs] Fuel tank problem--ideas?
>>
>> Stuart,
>>
>> Here's a thought: Is the tank vented somewhere? It has to be y'know. If
>> you
>> cannot find a vent, remove the gas cap and drive it. Does the problem go
>> away? If so, vent the tank by drilling a hole in your gas cap; not the
>> chrome cover, the part that seals the opening.
>>
>> Ed
>
> --
>
> Max Heim
> '66 MGB GHN3L76149
> If you're near Mountain View, CA,
> it's the primer red one with chrome wires
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