Electric Fuel Pump

C

CoupeDeGras

New Member
Hello!

Just after a bit of advice about about Electric Fuel Pumps...

I thinking of fitting one, so wondered whether anyone had a recommendations for:

a) A good one to buy
b) The best place to mount it
c) How to wire it in / where’s the best place to take the power from?
d) Is there an optimum diameter of fuel line to use (both from the tank and to the Weber car
All help hugely appreciated as always!

Cheers

Jon
 
I fitted a Facet Posiflow low pressure one similar to this


I mounted it on a bracket using one of the fuel tank bolts for location, use some rubber bobbins to mount it as it's noisy without. I connected the outlet to the existing fuel line which seems plenty adequate for the flow (it's not going to be any more than the mechanical pump) I ran a new supply from the fuse box and used a relay in the circuit, you also need to wire in an inertia cut off switch for safety in the event of a shunt. I went the whole hog and fitted a filter regulator (not really needed with the low pressure pump) and hidden switch.
 
Panky said:
I fitted a Facet Posiflow low pressure one similar to this


I mounted it on a bracket using one of the fuel tank bolts for location, use some rubber bobbins to mount it as it's noisy without. I connected the outlet to the existing fuel line which seems plenty adequate for the flow (it's not going to be any more than the mechanical pump) I ran a new supply from the fuse box and used a relay in the circuit, you also need to wire in an inertia cut off switch for safety in the event of a shunt. I went the whole hog and fitted a filter regulator (not really needed with the low pressure pump) and hidden switch.
Click to expand...

Thanks Panky, much appreciated - Great shout on the interim switch too, I wouldn’t have thought of that!
 
commeracer said:
Try and mount it as low, and as close to the tank as possible.
Click to expand...
Is that you Tim?

If so, is there any way the tank I’ve just order off you could be fabricated with a bracket not far from the fuel line exit that a pump can be installed onto?

I can even order a pump and send it to you if you like so you can plan/make it perfectly?

Cheers

Jon
 
Got a high pressure facet with regulator on the kit car from years back, but a low pressure one lined up for the campervan van - one less "thing"

For inertia switches I got some off Ebay, meant for Transits I think and being disposed of by a company that did electric conversions.

The van also has a 12 fuse box ready to go in. 2 separate power feeds (permanent and ignition live) that each feed 6 outputs, safer than the existing 2 fuses and allows a lot more take offs.
 
I've got a spare electric pump here you can have for a few quid. I never fitted it as it's not big enough for my v8
 
Jumping into this post as thinking of en electric fuel pump.
1)Would the relay be constant live and ignition live?
2) Do I remove the manual pump and blank the hole or take the arm out or just leave it in.
3) Where does inertia switch get its power from?
I’ve not got a clue.
Oh and are the little metal tubes on mec pump pressure fitted as my outlet one popped out. It stayed back in to get me back onto driveway. I see a fireball of destruction looming if I’m not careful.
 
1. Doesn't need to be
2. I took the arm off the pump and kept it in the cupboard - just in case
3. Fused live (I've fitted a fuse box with plenty of spares)
My mechanical pump did the same on a big hill in Yorkshire. Didn't notice until I spotted the big oily smear on the long campsite grass :eek: I put a little sealant on it and tapped it back in, it was fine for years until fitted the lekky pump. It was a new pump too.
 
Sorry needs to be wired into ignition live. I fitted an isolation switch as well, a bit of extra security as well as easy isolation.
 
There is another problem with electric fuel pumps. If the pressure pipe from the pump blows off, or is badly damaged, the pump will keep pumping fuel over a potentially hot engine with live electrics. had exactly this happen to my old Ford Anglia many years ago. The engine bay was full of spilt fuel. With mechanical pump the engine will stop, and so will the flow of fuel. I changed back to mechanical pump after this scary experience.
 
I was worried about the mec pump doing that and by the time I had coasted to a stop I’d be a ball of flames too. If the elec pump is by fuel tank it would just pump it onto the floor? Isolator switch would cut power to pump
 
S0updragon said:
If the elec pump is by fuel tank it would just pump it onto the floor? Isolator switch would cut power to pump
Click to expand...
Depends where the leak is.

Last week I left the petrol van idling nicely to warm up in the barn and went to find something. When I came back the van had stalled, choked itself to a standstill because there was a problem with the carburetor float valve. The carb was full of liquid fuel. If it had been an electric fuel pump, it would have still been pumping fuel all over the floor via the exhaust manifold for five minutes while I was away. Someone else on the VW forum had the same problem yesterday with an electric pump

My personal choice is to stick to mechanical. I understand that others may have different opinions.
 
Ahh. Well I am getting a new mechanical one anyway so will fit that and then decide. I was thinking of putting some wire around the dodgy one to the inlet one as a brace to get me to the garage. Going to attempt to fit new pump myself so may put the wire on anyway so it won’t happen again. Always good to have arguments for both sides of the coin :)
 
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