fuel pump.

[Brian (up north) Morris]

hi all. my fuel pump on the sierra. is really noisy. so im going to change it. im a bit confused about the replacement pumps. the bar on new pumps can be 3..right upto 6. not sure with one i need. its for 2.0 ltr pinto with efi. many thanks 

[Steve Kerswell]

Fuel pump are noisy, is yours mounted on rubber mounts, amazing the difference it makes. 

[Big Vern]

From memory the Sierra efi was a bosch pump which will be a 5 bar pump regulated by the fuel pressure regulator

[Brian (up north) Morris]

cheers bv. steve. yes its mounted in a rubber sleeve. im sure its packing in. its so noisy you can here it over the engine 

[James Doulton]

I'm pretty sure that the regulator is set to 2.5 bar, so anything more than this could do at low power. It has to be able to maintain that pressure at a flow of 40 litres/hr, which is what the Pinto can use at full power. The ebay one is 130 litre/hr with no resistance (wide open outlet) so I don't know that it would do 40 litres/hr at 2.5 bar.

[Brian (up north) Morris]

so higher is ok but under 2.5 is no good ????

[Steve Kerswell]

This?  https://www.merlinmotorsport.co.uk/p/fuel-pump-ford-sierra-xr4x4-es...

[Brian (up north) Morris]

http://www.ebay.co.uk/itm/171662360424?_trksid=p2060353.m1438.l2649... 

nar more like this :-))

[Brian (up north) Morris]

this one then http://www.ebay.co.uk/itm/371140985686?_trksid=p2060353.m1438.l2649...

[James Doulton]

That looks good. It doesn't state the flow but they list a whole load of more powerful engines, plus most of those operate at 3 bar. The Ford systems were in a minority for using 2.5bar.

[Brian (up north) Morris]

ill get that then james cheers. its 6.5 bar 

[Paul Sheridan]

My one has a normal run pressure of 3bar but can make 8bar, as long as the pressure regulator is working it will always remain constant at 3.2 bar.  

[Steve Kerswell]

Beware of fuel leaks Brian. With that much pressure above and beyond what its been built for.