I have a problem with cutting out when powereing out of a corner, I thought at first it was too much boost, but its fine in a straight line.

But have now been told it fuel surge and if i fill the tank over 1/2 full it will eb ok, however, woudl fitting a new fuel pump be a better option ????

It has been the same since i got the car too..

Any help would be appreciated and it's gettin annoying now !...


Cheers,

Al........

 

You can mount the pump lower which will help, but the only full cure is to run a fuel swirl pot feeding to the engine via an 044 pump. This way, even of the in-tank pump surges, the engine ALWAYS sees a supply of fuel from the swirl pot, so you (nor engine) will have notice this again .

 

I presume this is a common fault then

How do you mount the fuel pump lower ?? I might try this first..

Al...

 

Yes, a well documented known problem.

All lowering it will mean is it will surge at quarter of a tank instead of half. Given that this could lunch your engine if it happens on track, it is not something I would do - the swirl pot is the fix .

 

Why does it do it ?? I presume its the shape of the tank, as i never have had these probs with the sapph..

Al...

 

the saph tanks have outlets at the bottom so gravity feeds the pumps, the ecoss ones are intank therefore suck from in the centre, the saph is the btter design really, but as said swirl is the only way

 

The Sapphire has a gravity fed EXTERNAL pump, the Escort is fitted with an IN-TANK lift pump, so works completely differently.

 

how did i know my explanation WOULD NOT be good enough for a bufty like you

 

Had I seen your post, I wouldn't have expended the energy in typing mine . Now you've made me type twice as much .

 

my gp a type pump is virtually sat on the bottom of the tank inside the built in swirl pot reservoir thingy anyway,lol so how could you possibly get it any lower?

 

Had this problem with a mates '93 car, especially when booting it out of a roundabout. The car wrecked a couple of gearboxes because of it. We put a swirl pot in the boot fed by an external low pressure pump and used an external Bosch high pressure pump to feed the fuel rail via the filter (also now in the boot). It cured the problem but the pumps were very noisy compared to the in tank setup, they were mounted near the rear beam under the rear seats.

 

What does the swirl pot look like ?? and can u fit it to a normal uprated one like a Walbro ??

 

Of course you can, instead of feed the fuel supply to the engine, the Walbro supplies the fuel to the swirl pot, then the gravity fed pump does the donkey work to the engine.

 

A swirl pot's basically a cylinder with connections for fuel in, fuel out and vent/overflow. It's best mounted in the vertical position to avoid surge in the pot itself. We made ours hold about 3 litres and it had a baffle in it to try to stop any air from the feeder pump passing across the pot to the outlet. We took the return from the fuel rail back to the main tank to minimise hot fuel being recirculated.

 

Can you buy the Swirl pot, filter and line together ??

 

I had our swirl pot made up by a guy who does ally fabrications for GGR (or at least he did at the time) as it was cheaper than an off the shelf solution (see Demon Tweaks catalogue for what's typically available) and it was to my design. Used a standard fuel filter and ran aeroquip hoses between the various bits. Also made up an adapter plate to take the two returns and feed hose that sat in place of the standard fuel pump (it was quite a tight fit between the tank and boot floorpan as we used curved tubing).