Board logo

EFI fueling system
cd.thomson - 31/12/08 at 11:45 AM

Morning everybody!

I'm about to buy my fueling system to fit a duratec (as soon as everyone gets back to work on Monday ) but I don't really know where to start.

I was originally going to fit a pinto, so: tank > fuel cut off valve > inline nylon filter > low pressure fuel pump > filter king > dellortos

I understand I need a higher pressure pump for EFI. The word "facet" seems to float around on ebay a lot too. Any advice for a setup with associated trusted suppliers would be greatly appreciated.


omega0684 - 31/12/08 at 12:02 PM

you cannot use a the low pressure fuel pumps of an EFI System you need to get a high pressure pump! im running a pinto with efi and my set up go's

tank, low pressure pre-pump filter, HIGH PRESSURE Fuel Pump, high pressure fuel filter, then Trottle Body inlet, then fuel pressure regulator and finally return pipe back to the tank.

[Edited on 31/12/08 by omega0684]


BenB - 31/12/08 at 12:14 PM

You can run a low pressure pump initially if you're running a swirl pot system. Some people don't bother and just run the high pressure pump (but equally some people run into problems).

Tank = low pressure filter = low pressure pump = swirl pot = high pressure pump = high pressure filter= fuel rail

You'll still need a high pressure pump though. Preferably one rated to your estimated BHP.

If you know you're estimated BHP you can work out your estimated fuel requirements and then choose a suitable pump. You can either try and find a second hand (try "inline Bosch fuel pump" in Ebay), look in various old VWs, or buy a new one for about £45 off Ebay).

The return from the fuel rail should ideally go back to to tank. Some people get away with running the fuel rail return into the swirl pot. Only problem then is if you're sat in traffic the fuel will be circulating around in the engine bay and gradually get hotter and hotter. Returning to the tank means cool fuel.... Worth it?!?!?!


rusty nuts - 31/12/08 at 12:15 PM

Does your fuel tank have a built in swirl pot(reservoir) ? If not one way to get around not having one is to install a separate swirl pot fed by a low pressure pump(Facet?) which in turn feeds the high pressure pump via a fuel filter . If your tank has a swirl pot built in you do not need an external pot and low pressure pump and it may be possible to use an in tank pump .


cd.thomson - 31/12/08 at 12:21 PM

Cheers guys...

So...what on earth is a swirl pot?


AdamR - 31/12/08 at 12:33 PM

Sure, you could fit a low pressure pump, swirl pot, HP pump and 2 filters etc etc, but why not make life easy for yourself and fit an in tank EFI pump like this:



Includes a built in swirl pot and level sender - all you need extra is a HP fuel filter.

Only downside is that you need a tank around 25cm high. Here's my implementation with the sender suitably adapted:

fuel pump in the tank
fuel pump in the tank


AdamR - 31/12/08 at 12:38 PM

PS. The above is a Land Rover item, of which there are a few similar variations. See this one on ebay.


cd.thomson - 31/12/08 at 12:49 PM

I dont really want to mess with the fuel tank, its complete as sent by Dax and I can't weld..

Everything has to be external.


BenB - 31/12/08 at 03:50 PM

A swirl pot takes the fuel from the low pressure pump. It's like an expansion tank for fuel (or that's how I think of it).

It's jobs are to remove air and provide a steady flow of fuel.



IE fuel comes in at the top at an angle, swirls round the sides of the tank, loses any air-bubbles as it goes, pick-up from the bottom of the tank to the high pressure pump.

This one's got extra attachments at the top incase you want to put the hot fuel coming back from the fuel rail back into the swirl pot to ensure it gets even hotter


dave1888 - 31/12/08 at 05:27 PM

Heres one suggestion Rescued attachment 20l_swirl_pot.gif
Rescued attachment 20l_swirl_pot.gif


dave1888 - 31/12/08 at 05:28 PM

and another Rescued attachment 20l_without_swirl_pot.gif
Rescued attachment 20l_without_swirl_pot.gif


mark chandler - 31/12/08 at 06:48 PM

No need to throw lots of cash at a branded pump, something like this will be fine EFI pump

At this price no point in using a second hand one.

Just drop it by the tank or engine as low as possible if not running a swirl pot.

Cheers Mark


[Edited on 31/12/08 by mark chandler]


cd.thomson - 2/1/09 at 12:24 PM

Brilliant guys, thats exactly what I needed.

I think I'll go for the swirl pot system as I'm trying to go highspec and it seems to be something thats fitted quite commonly in performance applications.

Many thanks.


cd.thomson - 2/1/09 at 02:49 PM

as far as low and high pressure fuel pumps go, what psi should I be looking for? I presume the one linked above is high pressure.