Fuel pump question(s)

[gnash]

Here's the electric fuel pump fitted to my car.  The original pump is still in place.  At some stage I'll remove it and cover the hole with a plate I think.

[bis13]

the only problem is finding the right electric pump as they all pump different amounts (higher or lower pressure). i had this agro on a previous bis and a morris 1000 pump was suggested. the sludge you talk about is behind the pump where the push bar is and not in the actual fuel lines/ pump . i bought a job lot of fuel pumps from a motor factors and so never worry on this front , buy a few pumps and carry one with you at all times you never know when it will get you .

[Bruce]

how would one put one in a bis, as the pump for that has a return pipe, the required pressure at 4000 rpm is stated in the manual, would it be ok to use a pump that provided a constant pressure?

[wallopadonkey]

hi there i am new here and i have a problem with my 126 bis fuel pump it has disintegrated (common fault ?)

been to my local fiat main dealer m+k old colwyn north wales they are not available now and are deleted

1 - any one know where to get one from ?
2 - and how much ?
on the subject of electric fuel pumps a blitz site lists a metro or mg midget one as working and giving the correct pressure it also does not need the return as it pumps till the float is full then shuts off

http://pages.zoom.co.uk/blitzracing/Racing%20a%20blitz.htm

'quote
Fuel pump

The standard system uses a mechanical pump that constantly circulates fuel through the carburetor and back to the tank.  This can flood the carburetor as there is no adjustment on the output pressure. I would recommend fitting an electric unit with constant low-pressure output (say 3 psi) such as a Metro or MG Midget unit. These units stop pumping when the float chamber is full so no re-circulation pipe is needed and can cope with full power fuel demand. If fuel leakage  from the carb' is a problem, it may be necessary to fit a variable fuel pressure regulator, and reduce the pressure on the float valve. Life is tough for the float valve on a Blitz as the carb' gets shaken so much, so its important to ensure the float and needle are in good condition. 'quote

1 - anyone know if this is correct
2 - does it have the correct pressure needed to run a 704 cc w/cooled bis
3 - ran mine into town for a electric check up drove it home parked it up big backfire then dead fuel pump totally random!!

how it worked all the way home then totally destroyed the next day is beyond me

anyhow till i get it sorted i will have to use my bike

also i am interested in a late aircooled bis from poland did they do just left hand drive models or are there some r hand ones about??

[The Laird]

Further to my last post I have been investigating 12 volt pumps. I have come across a suitable pump which is widely used in racing cars all over the world. They do a unit that runs at .2 bar which is equivalent to just under 3 psi which is the pressure for the Bis. It has a capacity of 45 litres an hour which is more than adequate.
It is quite a small unit and could easily be adapted to fit over the existing pump once blanked off. However they suggest that it is fitted as near to the fuel tank as possible. Fue filters would also be advisable.
I have been quoted Lm 18 50 which is about £27 50 but I am sure there are probably cheaper equivalents. The make is Facet and the solid state model is the one I am describing.
Hope this may be of some use.

THE LAIRD

[ChrisRLewis]

On the subject of electric pumps used by other makes and models like the Morris 1000, Mini etc. They are all very much different some are designed for a short push and a long pull effect such has the Minor 1000 on the other hand the Mini was designed the opposite way long push and a short pull (because the tank is in the rear)

This may be of help in someone adapting one of these pumps.

[126dave]

moggy minor ones are great,good SU quality,i have used them on all sorts of cars.......never had a problem,my bis was running with one for a while,powered from the rear sidelight!............................. :cool:

[wallopadonkey]

ok demon tweeks in wrexham have a facet red top solid state fuel pump for about £30 3 psi fitting kit is a bit extra includes filters mounts and pipe i think was thinking of fitting one as a backup with a diverter switch on it like someone said from a seperate switch under the dash

[Chris Lakin]

thats sounds like a good idea,  i think my Fuel pump has gone, its only few months old  :sad:

to block off the old fuel pump do you just remove the rod? and how hard is it to leave the old in place as well as the electric pump?

will lump a new posh rod in as well and a new pump, ive been trying to start it time and time again all day, could this have worn the pump out? also fuel lines have severed with age so no fuel is passing through pump which makes it wear quicker?  

Wallopdonkey did you say you couldnt locate an orginal pump?

www.ricambio.co.uk they do them for about £20 i gte most of my stuff from them.

[wallopadonkey]

when i spoke to ricambio they said 45 for the pump and rod i think i will leave the pump where it is as it workin sound but gonna mount the eleccy one to the left inner wing as the fuel pipes are on that side anyway i will just swap the fuel pipes from the mechanical pump to the eleccy one if i need to shud be easier than changing a fuel pump at the side of the road and moving the dizzy to get at that bolt

[126dave]

on the subject of ''that bolt'' do what i did,take it out,grind the head so it clears the dizzy,cut a slot in it then you can use a screw driver to remove etc...............also,there are two nice 6mm threaded studs on that left inner wing to fit a base plate to take your lecky pump and earth,thats where mine is on the aircooled....i fitted new mech pump from gerstl (£15.00ish) to the bis.....im trying to keep that standard (LOL)

[wallopadonkey]

yeah cheers if i get the positive from the side light though wont the light have to be on all the time someone said about it earlier in either this post or another one not sure where it was no am gonna run it from the dash anyhow

[126dave]

he he that was me,i wired it in as a get me home thing,on the aircooled i've taken power from the coil................turn the key and on it comes