> >
> >-----Original Message-----
> >From: RUN262JOHN@aol.com <RUN262JOHN@aol.com>
> >To: mgs@autox.team.net <mgs@autox.team.net>
> >Date: 10 March 1999 23:58
> >Subject: fuel pubp question
> >
> >
> >>I recently tried to start my 1980 B after parking it for about a month.
> >It > >>will not start because there is no gas coming into the carb.
yes i have
> >>gas.....then I found out that the fuel pump was not original...PO put on a
> >in
> >>line pump. So...I bought an orginial pump and installed it. I'm still not
> >>getting any gas at the carb. The pump is making a lawnmower sound but not
> >>getting any gas to the carb. This is the same problem the old nonorginal
> >pump
> >>was doing before replacing. What's wrong? Am I missing something?
When you replaced the fuel pump, did gas run down your arm from the tank
side fuel line?
If *not*, then it's entirely possible that the tank is low on gas, or
there is a clog in the line or pickup.
We had this problem in getting the B started a few weeks ago. Blew back
through the line with compressed air, and could hear bubbling in the tank.
>Then< gas ran down my arm.
Anywho, I agree with Paul Hunt who said that it's pumping air if the sound
is really loud. Especially on an SU pump, which is supposed to shut off
when it gets backpressure. Even on the continuously-operating universal
pumps, the sound quiets a bit when gas is in the pump.
Here's the end-to-end debugging chain:
Check for fuel at 1) at the carb, 2) before the in-line fuel filter if you
have one (I have one in the engine compartment) 3) immediately after the
pump 4) immediately before the pump, 5) gas in tank (check first!)
If you find gas, except in the tank, stop <g>.
No Gas Gas Cause
------ --- -----
- 1 Clogged or stuck float valve,
clogged jet
1 2 Clogged fuel filter
2 3 Clogged line
3 4 Fuel pump installed backwards, faulty
fuel pump (ruptured diaphragm, etc.)
4 5 Clogged pickup/line
5 - Empty gas tank!
--
John M. Trindle | johnt@tsquare.com | Tidewater Sports Car Club
'73 MGB DSP | '69 Spitfire H Stock | '88 RX-7 C Stock
|