Range Rover LPG conversion. Fuel Pump Conversion

[Jammez]

Hi Folks

Not sure if this is the best place for the question but hopefully a few LPG experts in here.

I have a 2003 Range Rover (4.4 v8 BMW engine) with a Prins LPG conversion. I've just had to replace the petrol fuel pump as it's died. The replacement one has now started to get noisy after only a few months. The fact it's making a noise has highlighted that the petrol fuel pump seems to be running all the time even when on lpg.

My question to you guys is, is this normal? Should the pump be running all the time? My thought process would be there must be some kind of pressure cut off that cuts the pump when the fuel system is at the correct pressure?

Any thoughts?

Cheers

James

[anonymous-user]

Yes the pump will run all the time, that won't cause any issues because the fuel just gets returned to the tank via the return line.

Sounds like the replacement pump is dodgy.

Only other thing that comes to mind is if the tank is right on the verge of being completely empty then the pump might be sucking air during cornering and overheating.

[Jammez]

That makes sense, I think I maybe just got unlucky with the replacement pump. It's under warranty for 12 months so I'll get another one organised.

The original one lasted 160k so 3 months for the new one seems a little low in comparison!

Thanks for the advice

[andrewrob]

I've got the same engine in a 5 series and have that converted to LPG. No issues with the petrol pump in the last 40k miles I've been running it on gas.
Think the above are right about the new pump being iffy, hope you get it sorted