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Manifold vs Mech fuel pump
https://www.ausmini.com/forums/viewtopic.php?f=2&t=73672
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Author:  grey 64 [ Sat Oct 22, 2011 11:12 am ]
Post subject:  Manifold vs Mech fuel pump

The fuel in the van seems to dry up after running for a while at temp. Investigation finds no fuel getting to carby. Is this caused by heat from the manifold, if so what can i sheild the fuel pump with? Fuel pump does work.

Author:  peterb [ Sat Oct 22, 2011 2:37 pm ]
Post subject: 

it should have heat sheild on it from new, I think.

Author:  Morris 1100 [ Sat Oct 22, 2011 2:45 pm ]
Post subject: 

They never came with a heat shield. You can wrap the exhaust and wrap the fuel pipes to reduce the heat.

Author:  Mike_Byron [ Sat Oct 22, 2011 6:27 pm ]
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Fuel vapour locks on a mini is not a common thing even on the hottest of days.

Yes you can wrap it in heat shield cloth but why is it vapour locking ???

Is it an aftermarket fuel line that is too close to the exhaust ??? Is the ignition timing properly set ???

Mike

Author:  simon k [ Sat Oct 22, 2011 7:25 pm ]
Post subject: 

chuck the mechanical pump and put an electric under the back

Author:  drmini in aust [ Sat Oct 22, 2011 7:38 pm ]
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simon k wrote:
chuck the mechanical pump and put an electric under the back

= no more vapour lock, because the fuel is then under pressure everywhere upstream of the pump (which is down the back, and cool).

Author:  michaelb [ Sun Oct 23, 2011 7:00 am ]
Post subject: 

I would say for fuel pump needs replacing as a good mechanical pump has plenty of pressure

Author:  VulcanBB18 [ Sun Oct 23, 2011 7:16 am ]
Post subject: 

Probably the little flap valves in the pump if it's a goss mech pump.

Or there's a bit of poop under one or both of them. They will still pump fine like this but only when there's fluid in there, once some vapour gets in they wont lift (same problem if priming from dry). New valves solves the problem each time :D

cheers,

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