Diesel leak

TallXIII · Jul 7, 2019

So, here's a funny story.
After many weeks of talking about looking for the oil leak on my D2 I finally got round to looking for it.
Turns out it's not an oil leak at all, it's a diesel leak. (I did wonder why I could smell it on occasion ‍

)
So after a quick look on here and a quick look under the bonnet I'm assuming it's the fuel pressure regulator but I can't be 100% sure.
Are there any tell tale signs it's that for certain or is an educated guess going to be more that enough.

Landmark2 · Jul 7, 2019

Hi, This article will show you where to look (and replace)
http://www.discovery2.co.uk/Fpr.html
Griff

TallXIII · Jul 13, 2019

So I've just replaced the seals on the regulator, what an absolute nightmare that was!!
But now when I've the ignition on there's a high pitch whine coming from around the back end, is it the pump in the tank? And should I be worried as it wasn't there before

brianconwy · Jul 13, 2019

Its the pump priming and is to be expected the first time after doing the job.

brianconwy · Jul 13, 2019

Out of curiosity which kit did you buy and did you replace the regulator itself?

TallXIII · Jul 13, 2019

brianconwy said:
Out of curiosity which kit did you buy and did you replace the regulator itself?

It was a £30 kit from eBay, I was going to replace the regulator but broke my circlip pliers and to be honest it looked fairly new, as did the o rings apart from the missing one.....

brianconwy · Jul 13, 2019

I need to change the engine on mine and I am thinking of changing the fpr while it is easy to get to. X8R do a kit with Bisch regulator but it is expensive.

TallXIII · Jul 14, 2019

That's what I was going to go with as I used their EGR delete kit, very nice piece of kit but for the sake of a regulator o didn't what to spend £60 quid on it. And considering all I used was 3o rings and the metal gasket I'm glad I didn't

TallXIII · Jul 16, 2019

Well it's still leaking. So I'm at a loss now.

brianconwy · Jul 16, 2019

Check if it's coming from the regulator spout. The little tube protruding from the regulator. You might be able to get a view by supporting the chassis, and letting the axle drop. There is a gap through the wheel arch. I used a cheap eBay endoscope I had..

TallXIII · Jul 16, 2019

There isnt a tube on the regulator, there wasn't on the new one either

brianconwy · Jul 16, 2019

Some have tubes like this one

Some just have a hole

When the regulator fails it is where the diesel escapes.

TallXIII · Jul 16, 2019

God I hope it's not that, I don't think I can go thru taking it apart again

Diesel leak

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