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[Webby the Bear]

What is it in the omega's fuel system that maintains fuel pressure after you've switched the car off?

I'm aware that some have a one-way ''check'' valve in but I think someone mentioned a while ago that the omega pump doesn't have one...so what does it have to maintain fuel pressure?

[Webby the Bear]

anyone? lol

[05omegav6]

The pump...

Oh and the fuel pressure regulator

[Webby the Bear]

Thanks taxi.

what is it in the fuel pump that achieves that? I.e. A check valve?

And how does it achieve this with the fpr as I thought that just controlled pressure during running?

[05omegav6]

Thanks taxi.

what is it in the fuel pump that achieves that? I.e. A check valve?

And how does it achieve this with the fpr as I thought that just controlled pressure during running?

Why overcomplicte things... pump on and fuel flows, pump off and it doesn't... typically runs at 5-6 bar.

The FPR knocks it down to a consistent, useable level where it is needed, ie at the fuel rail

[Marks DTM Calib]

But that does not explain why fuel pressure remains after turn off 

To answer your question Webby, most fuel pumps have a one way check valve after the pump motor. 

[Webby the Bear]

But that does not explain why fuel pressure remains after turn off 

To answer your question Webby, most fuel pumps have a one way check valve after the pump motor. 

Exactly  (I'm copying Taxi with rolling eyes there  )

Thanks Mark, much appreciated