Thread: Fuel pressure regulator?

More probably your injector washers.
Regards Philip A

Not sure what it is but if it's the washers (o-rings) for fuel injectors all the parts will be around $20 - $30 dollars. This was for a V8, 16 o-rings, 8 retainers and 8 filter baskets.

Easy job on a V8. If a V8 and you also want to check the injector is ok, the ohms should be between 13.5 and 15.2. Mine were all around 14.8 ohms when tested.

It's a td5. No diesel smell in engine bay and not 'making' oil which I understand are prime symptoms of injector washers.

I did have a little oil on the injector loom which I have cleaned but will need to replace injector harness so will do washers and o rings at the same time anyway..

Try it with the Maf unplugged
If it goes better then your up for a new Maf

Originally Posted by Jimgee

It's a td5.

It might have helped if you had let us know that at the start - I was going to say that the fuel regulator was inbuilt in the pump - that is is in the V8.

Originally Posted by rangieman

Try it with the Maf unplugged
If it goes better then your up for a new Maf

Thanks rangieman, tried that test too...

If there a leaks in the injector washers then the oil level will not rise, but the car will be hard to start and lack a bit of power.

There are Orings at the top of the injectors which keep the fuel in the head. If these leak you will make oil.

They are changed when you do the washers .
Regards Philip A

Originally Posted by Jimgee

Hi all,

I have found my new (old) disco 2 to have a noticeable lack of power on hills. Research suggested fuel pump. I read about a test whereby turning the ignition on and seeing if pump stops after a few seconds. Well mine timed out after 30 seconds, repeated 3 times with same result. So. New pump installed (luckily took a punt on a cheaper one) and problem still there. Pump does not stop and lack of power on hills.

So could this be the regulator? Is there anything else I can check before I spend more dollars? I have recently replaced the fuel filter and it was primed properly by pumping accelerator to get engine light flashing.

I have seen lots of posts about leaking regulators but mine is not leaking. Do they fail in other ways. As far as I know it is an old regulator.

Thanks again.

Lack of power uphill can have many causes and the fuel supply is not he first on the list cos if it was that the lack of power would occur at high revs(above 3000) without any hill too. Lack of boost is the first suspect which can be due to stuck wastegate, clogged EGR(if it's still there), AAP or MAP sensor fault, this thing can't be just guessed, nanocom is needed to see live inputs eventually logged fault codes