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MG Midget and Sprite Technical - 1977 Midget 1500 fuel Pump Help

Having taken my car apart some time ago, I am now puting it back together, when it came to refitting the manual fuel pump and fuel lines I cant remember which is the inlet and outlet on the Pump.

Its a Ac manual type pump with a connection towards the top and one slightly lower down.

Any advice would be great.
B Lodge

Hi,


Hope this helps!


Dave

D Prince

My fuel pump has little arrows cast in to indicate flow direction... not yours?

-:G:-
Gryf Ketcherside

Can you not just operate the lever and see which port sucks and which blows?

DH2
DH2

I would think so...

Quick test: put one end of a hose on a pump barb, the other end in a container of fuel, operate the pump, if it blows bubbles...that's the outlet, if it pumps fuel...that's the inlet...simple as that!

;)
Dave Rhine ('78 1500)

Hi all Thanks for your comments, I have tried the bowl of fuel trick on the pump direct, and have found the following. One side blows and sucks and the other appears to do nothing. I am wondering if the pump at self is at fault, however this said it worked fine before it was removed from the car.

Any advise would be appreciated.
B Lodge

If the pump sat up dry for any length of time, the diaphragm may have cracked or a valve may have stopped up.

Don't take a chance, now's the time to replace it...

:)
Dave Rhine ('78 1500)

Right, there should be two little one-way valves in there. I once had one fall out of its socket, but I had other tolerance-related problems with that pump as well.

Just make sure that the valves are clean, and that the diaphragm is sound.

-:G:-
Gryf Ketcherside

Thanks all for your kind words of help, it turns out the diaphragm had dried up, Solution removed the top cover from the pump poured in a cap full of petrol refitted to car and the fuel began to flow. Was just about to give up and buy new pump.

B Lodge

This thread was discussed between 26/02/2011 and 11/03/2011

MG Midget and Sprite Technical index

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