Thread: Fuel pressure reg still leaking

Originally Posted by Jazzman

It might sound obvious. But are you sure you removed the o-ring in the side of the engine before fitting the new one?

Did you replace the top hose as well? Is the leak possibly coming from the hose instead? Mine was brittle at the fitting where the rubber was crimped.

or.... if fitting the fpr with the inlet manifold in place, the 'o' ring on the sealing face can easily dislodge and fall out without the installer knowing. Also, remember that there is a small long thin filter behind this 'o' ring that fits snugly inside and if it has accidentally fallen out, the 'o' ring may not seal against it, meaning the 'o' ring will not compress properly and may not seal, in turn causing a diesel leak.

I used a kit to stop the apparent leak from the FPR. The leak slowed, didn't stop and began to increase over time. I decided to do the replacement

kit again approximately 2 years later. This time there was no change in the speed of the leak. Search all over and around for where the leak was

coming from. I found that it was coming from the grommets that are used on the bolts holding down the rocker cover which had hardened and

shrunk a little over time(15 years ). Replaced grommets and a bit of a clean up with some degrease and yippee, an oil leak free motor.

Cheers,

Jason

Well after getting my mechanic to refit the o rings,gasket and reg again it was all good for the trip back home. Today I started it up to go get some coffee, drove it for about 5 mins to the supermarket and noticed diesel smell again. On closer inspection there was a trail of diesel from home to car park.
Looks like I'm heading in the direction of a lr genuine kit. No idea what the problem is with it.

I used the eBay repair kit probably more than two years ago now and no diesel leaks since...

Originally Posted by Jason789

I used a kit to stop the apparent leak from the FPR. The leak slowed, didn't stop and began to increase over time. I decided to do the replacement

kit again approximately 2 years later. This time there was no change in the speed of the leak. Search all over and around for where the leak was

coming from. I found that it was coming from the grommets that are used on the bolts holding down the rocker cover which had hardened and

shrunk a little over time(15 years ). Replaced grommets and a bit of a clean up with some degrease and yippee, an oil leak free motor.

???

Are you saying that you confused an oil leak from the rocker cover with a diesel leak from a FPR?

Or perhaps a leak from the rear of the car? When my FPR was leaking the diesel smell wasn't that bad. But when it leaked from the worn though fuel line (Green one out of the fuel pump) it leaked far more fuel and the smell was bad. There was also a residue of diesel on the rear window.

Originally Posted by twr7cx

I used the eBay repair kit probably more than two years ago now and no diesel leaks since...




???

Are you saying that you confused an oil leak from the rocker cover with a diesel leak from a FPR?

Not confused at all, the leak was at the back of the motor.

Just trying to say that a leak can be coming from another spot than the one which has assumed to be the culprit.

A fair assumption would be(allowing for that the FPR kit was installed correctly), to perhaps look a little sideways or out of the box for the leak elsewhere, than what has already been repaired correctly.
eg oil at the bottom of the bell housing could be coming from: the rocker cover, the FPR, the main bearing seal, the cam plug at the rear of the head. A leaking FPR can look like an oil leak. See attached picture(not my photo).

Leaking FPR.jpg

If I wasn't clear in the first place, I hope I am now.
Accept my answer or don't. I'm not to worried. I do all the work on my vehicle and recently on a drive from Warwick to Hervey Bay, back and some other driving Got 990Km out of the tank. I must be doing something right.

Cheers,

Jason

I tried the ebay FPR and o ring fix - still leaked. Changed the gasket, still leaked.


Replaced the whole FPR and block with genuine and all good.


Sometimes the cheap fix is not the best fix.