Fuel Pressure Regulator

My FPR on a 2000 TD5 has started to leak. What is the most common point of failure and has anyone tried repairing one with the O ring sets that are available on ebay ?
Thanks
Chris

on a defender i would try but disco i allways fit genuine new too hard to get at

Lay on top of the engine, left hand under the inlet manifold and right hand in from the top not to bad, but as said tight.


Lynall

The problem with the fuel pressure regulators is that they are all made badly made. The design is ok(ish), but the manufacturing is the problem.

When the units are assembled, the O-rings tend to get damaged when they are pushed into position, so you will find some may leak from new. Others may leak in a weeks time, or a months time. Depends on the luck of the draw.

To do the repair correctly, the internal metal needs chamfering where the small O-rings seat, otherwise they will be damaged again when the new O-rings are re-seated.

Also, the O-rings are not made from a suitable material. The standard compound will break up eventually. They need to be a specific fuel type, and I doubt the eBay ones are nothing more than a standard £2 set of O-rings.

I only know this because an engineer working close to me has taken one apart to see why his leaked so soon after renewal. He is going to re-manufacture them correctly, including the chamfering, but he can only do this in batches which will be a problem for most people.

If he can cure the problem then he'll have a constant supply of people asking for their FPRs to be reworked. I've got at least three dud ones (not all mine) sitting in my shed so I may have a go at taking one apart myself.

He asked if we could fit one of the rebuilt first batch to his Discovery commercial, so I expect that to be done sometime this coming week. Then I need to check the fuel pressures on a run, just to make sure he hasn't 'overfixed' the issue for Land Rover...

Keep in contact and send me one of them to be rebuilt if it all works out.

I've sold an awful lot of the repair kits on eBay, and am now doing them with the gaskets and all They seem to fix the problem for most people, and are cheaper to buy & do than the regulator on it's own, or the whole housing.

Alex,
Yes well done and thanks for going to the bother of putting the set together. Fitted mine to my Defender 110 recently and the acceleration is now finely tuned.

Thanks Paul

No worries The kits with the Gaskets seem to be selling the best these days

Shifty1962 said:

If he can cure the problem then he'll have a constant supply of people asking for their FPRs to be reworked. I've got at least three dud ones (not all mine) sitting in my shed so I may have a go at taking one apart myself.

Click to expand...

Just to update, all the rebuilt units appear to be running well. On the gauge, they run at 4.1 bar right through the rev range. I've run out of units though... :doh:

WSLR said:

Just to update, all the rebuilt units appear to be running well. On the gauge, they run at 4.1 bar right through the rev range. I've run out of units though... :doh:

Click to expand...

Thanks for the info on the chamfering issue, I've updated my listings with advice on that

Crazy though isn't it? Not even manufactured properly at the factory...

Doesn't really surprise me for LR

Hello,

I have the same problem a leaking fuel pressure regulator but can't seam to find the replace part for my model. Could anyone suggest an alternative part or anything?

The part which seams to leak has the code : ERR7253
Land Rover Defender engine no. 10P 90188A

didi29 said:

Hello,

I have the same problem a leaking fuel pressure regulator but can't seam to find the replace part for my model. Could anyone suggest an alternative part or anything?

The part which seams to leak has the code : ERR7253
Land Rover Defender engine no. 10P 90188A

Click to expand...

Have you tried a repair kit?

@ MTurri - which of the following part codes would fit for my model?
@ Cyberprog - you mean the Seal repair kit people suggested from e-bay? thinking of ordering one

Yep, considering I sell them on there

got a new fPR for chris,s disco, when i took the bolts out of the old one the threads came out of the head.
this head is only 2 years old , now iv,e got to mess about rethreading it.
WE ARE NOT AMUSED:mad2:.

gunna be off the road for at least 2 weeks till i get time to do it.

CHRIS IS DEFINATLY NO AMUSED:mad2::flame2: