Joined: Aug 2017 Posts: 1,230 Threads: 33
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Location: Salop
Car type: '28 GE Cup. '28 AD Chummy '30 RL Saloon. '34 RP Saloon. Too Many toys!
Have you tried sucking through the inlet yet?
If you can suck and get no leakage it shows the non return is good, and then porosity or a leak in the diafram are next culprits.
I would have thought porosity bad enough between the suction side and the outlet side in the pump that prevents any vacume being formed would probably be visible with Mk1 eyeball.
Sometimes damage on the diafram is hidden by the metal bits.
Of course it could be the seal between the diafram and the body too.
Joined: Aug 2018 Posts: 281 Threads: 38
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Diaphragm is new, (E10 suitable !!! ) To be honest the corrosion in the main body looks too bad to warrant keeping it so >
WHO HAS A SPARE AC "T" TYPE F/PUMP complete or just Top Body and heading to Beaulieu this w/e.
Will be in the camping field in my Auto-Sleeper Motorhome R799 PCW, and I have CASH with me !!!!!
Joined: Aug 2017 Posts: 923 Threads: 6
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Location: Scottish Borders
Non-return valve stuck open?
Jim
Joined: Aug 2017 Posts: 704 Threads: 12
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How about the cap bolt leaking air try an O ring under it.
Joined: Aug 2018 Posts: 281 Threads: 38
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Guys, the body is severely corroded, so has now been scrapped. So I simply will be looking to replace ASAP, if I cannot find one a Beaulieu/ or somebody can supply me one from there stash of bits !!! then its a 6 Volt SU Pump.
Joined: Aug 2018 Posts: 281 Threads: 38
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Thanks A G W, think that Flexolight may have a pump body I can fit to my original base, can't find a A7 specific pump, but they're cheap enough to play with !!!
Joined: Jan 2019 Posts: 1,481 Threads: 17
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Location: Bala North Wales
Car type: 1933 RP Standard Saloon
Seven Workshop supplies a replacement (U type) pump. You will need to replace the return spring with the one on your original pump to stop the carb leaking when the engine is not running, but otherwise it works fine. I have had one on my car for about eighteen months.
Joined: Aug 2017 Posts: 1,230 Threads: 33
Reputation:
6
Location: Salop
Car type: '28 GE Cup. '28 AD Chummy '30 RL Saloon. '34 RP Saloon. Too Many toys!
As I noted earlier, if your fuel tank is a little crusty, be warned that the U type non returns are less forgiving.
I have a U type on the fordson Major, it was a PITA until I flushed the tank, similarly father had similar issues with the RP running one of Jamies new ones. He went back to the T type top on the bottom of the new U type.
Joined: Aug 2018 Posts: 281 Threads: 38
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Will catch up with Jamie at Beaulieu, but one his F/pumps is on my shopping list + any used spares I can find over this w/e.
Saw the fordson type pump and that also has mileage, unlike my bl**dy Ruby has !!!!!!
