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Mechanical Fuel Pump Broken?


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#1 ZeroT

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Posted 14 September 2019 - 01:07 PM

So I've been scratching my head on a fault with my engine cutting out for a few weeks now (another post on here) and today I just had an inkling to check the fuel pump.

 

This instantly doesn't look right to me but am I wrong? 

 

On popping the pump open there is a small rubber piece (valve?) that was just lose inside, looks like it was supposed to fit over one of the inlet/outlet ports but no apparent way of it being attached, and it also has some holes in it which again just doesnt look right to me. 

 

However I cant find any picture anywhere of what they are supposed to look like! so I thought I would ask on here...

 

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#2 phillrulz

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Posted 14 September 2019 - 01:38 PM

Looks broke to me, id expect two rubber flap valves, output closes on suction stroke and input opens then output opens on exhaust stroke and inlet closes. Think you can kinda see the exhaust valve outside the houseing. Let alone the what looks like the intake valve with holes in it. 



#3 Rorf

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Posted 14 September 2019 - 04:48 PM

What ever that pump is knackered, just get a new one, cheap enough.



#4 ZeroT

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Posted 16 September 2019 - 09:03 AM

Would I be better off replacing it with a Facet solid state pump?



#5 DeadSquare

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Posted 16 September 2019 - 09:38 AM

Would I be better off replacing it with a Facet solid state pump?

 Looked at as a case of "The devil you know", because the pipes all fit, it would be easier to fit a replacement pump.

 

You could repair yours, but the parts cost almost as much as a new pump, and the guts in a new pump might be able to contend with modern fuels.



#6 Cooperman

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Posted 16 September 2019 - 12:32 PM

A Facet electric pump is always my first choice and for total fuel pump reliability I fit a pair in parallel with separate switches, omne from the ignition feed and the other from a separate fused circuit.

In fact I am about to do that on my 1990 Cooper 1275. It should be an easy job to get the old pump off as I am fitting a new LCB and twin HS4's, so access to fit the blanking plate will easy.



#7 Dannyboolahlah

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Posted 16 September 2019 - 10:03 PM

A Facet electric pump is always my first choice and for total fuel pump reliability I fit a pair in parallel with separate switches, omne from the ignition feed and the other from a separate fused circuit.
In fact I am about to do that on my 1990 Cooper 1275. It should be an easy job to get the old pump off as I am fitting a new LCB and twin HS4's, so access to fit the blanking plate will easy.


Makes sense for a rally/race car, but isnt that a bit overkill for most?
Where do you stop if you fit 2 of everything that could fail on a Mini haha.

#8 Cooperman

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Posted 16 September 2019 - 10:53 PM

 

A Facet electric pump is always my first choice and for total fuel pump reliability I fit a pair in parallel with separate switches, omne from the ignition feed and the other from a separate fused circuit.
In fact I am about to do that on my 1990 Cooper 1275. It should be an easy job to get the old pump off as I am fitting a new LCB and twin HS4's, so access to fit the blanking plate will easy.


Makes sense for a rally/race car, but isnt that a bit overkill for most?
Where do you stop if you fit 2 of everything that could fail on a Mini haha.

 

That is quite correct.

 

I am from an aerospace engineering background and when I was first involved with Minis, in the early 1960's, the old Lucas petrol pumps were a nuisance in terms of reliability, so I fitted a pair of them and now I tend to do the same with Facet pumps. I also fit two ignition system condensers remotely from the dizzy. Paranoid, moi??



#9 Rorf

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Posted 17 September 2019 - 05:37 AM

 

 


Makes sense for a rally/race car, but isnt that a bit overkill for most?
Where do you stop if you fit 2 of everything that could fail on a Mini haha.

 

 

One engine up front and one in the boot - that's the ultimate :D



#10 DeadSquare

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Posted 17 September 2019 - 06:11 AM

 

A Facet electric pump is always my first choice and for total fuel pump reliability I fit a pair in parallel with separate switches, omne from the ignition feed and the other from a separate fused circuit.
In fact I am about to do that on my 1990 Cooper 1275. It should be an easy job to get the old pump off as I am fitting a new LCB and twin HS4's, so access to fit the blanking plate will easy.


Makes sense for a rally/race car, but isnt that a bit overkill for most?
Where do you stop if you fit 2 of everything that could fail on a Mini haha.

 

 

Imagine a second lot of controls for, who ever is, the back seat driver !






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