2003 V70 D5 - Fuel delivery issue - Help please

[BlueArcher16]

Hi,
So I was on the way to a conference last week with 55 miles range and my car stop running just as I hit a roundabout on a dual carriageway. Managed to get started again so I raced around the roundabout and dived on to cycle track off the road as it cut out. As it displayed all the symptoms off running out of fuel I assumed the display was having a bit of a wobbly and giving me inaccurate range estimates. I called Greenflag and they gave me some fuel which got the car going again. The car was then fine for three days and I though nothing of it.
However it then cut out in the same way again - I could feel the power go out of the throttle as I was going 70 down the motorway and rolled to a stop on the hard shoulder. But this time I had 140 mile range. Called Greenflag suspecting I'd been a complete idiot and ran out of fuel twice in three days. Roadside assistance turned up and confirmed the was fuel in it, as he opened a valve up and the fuel shot out over both of us.
He plugged it in and it was reading a fuel delivery error and the pressure reading he said were low, which seemed strange considering the speed it came out of the valve.
Anyway didn't get it going and went home on a lorry.
Thoughts on this? from having a quick google im thinking fuel pressure regulator or pressure sensor??

Appreciate any help.

Many thanks

[SwissXC90]

Low fuel pressure caused by one or more of:

1. Blocked fuel filter
2. Air bubble in fuel line
3. Bad fuel pump

My vote is for the bad fuel pump

[davebb]

leaking injector,
Dave

[cheshired5]

Originally Posted by BlueArcher16

as he opened a valve up and the fuel shot out over both of us.

What valve?
Can you post a picture please.....

[skyship007]

Originally Posted by davebb

leaking injector,
Dave

It would still start with one leaking or blown injector, although it might run a bit rough.

My wild guess based on no fault codes listed would be the following:
1/ Bad in tank LP feed pump if fitted.
2/ Blocked or leaking fuel filter (A lot of folks fail to change the O rings).
3/ Air leak into the fuel lines or connections from the tank.

Running out of fuel and air in the fuel system produce the same symptoms. It's often caused by bad seals in the fuel filter housing or loose cap (tends to cause a leak if the systemn has a feed pump).
One way of testing if it's air is to see if it needs priming before it starts. If it needs more than a few pumps of a manual priming bulb (Not sure if one is fitted), then it's air.

[BlueArcher16]

I've changed the fuel filter. Turned the engine over and took the new filter off again and there was fuel in the filter. So would that rule out a bad in tank pump as fuel is finding its way into the filter ?
Thanks

[cheshired5]

Originally Posted by BlueArcher16

I've changed the fuel filter. Turned the engine over and took the new filter off again and there was fuel in the filter. So would that rule out a bad in tank pump as fuel is finding its way into the filter ?

Erm, no not really.
Can you hear the pump working with ignition on?
Also, still waiting on details of the valve you mentioned.....

[SwissXC90]

Originally Posted by BlueArcher16

I've changed the fuel filter. Turned the engine over and took the new filter off again and there was fuel in the filter. So would that rule out a bad in tank pump as fuel is finding its way into the filter ?
Thanks

No because you don't know if the fuel tank pump is able to provide sufficient fuel line pressure to keep up with the demand.

[reggit]

You’ve got the same symptoms mine had with a bad in-tank pump.
It didn’t store a fault code, there was one before the ignition was turned off, but once cycled it was erased.

To tell for sure, use Vida to read both fuel level sensors (or physically open the tank hatches and look) when the tank is less than 1/4 full. If there’s more fuel in the passenger side of the tank your pump isn’t doing it’s job. I’d expect the passenger side to read zero when there is 1/8th tank left. It’s this fuel that the car can’t access with a failed in-tank pump due to the shape of the fuel tank.