Td5 Diesel fuel leak

**shamirj** · 25th March 2010, 07:51 PM

hi all,

My D2 Td5 auto has commenced a fuel leak under the centre/middle of the engine. Had a quick look at night and seems to be running down the pipes under the gearbox. Where could the source of the leak be and what may need changing. My electrician had done some work on the LR and noticed the fuel leak as well. any help appreciated. cheers

**justinc** · 25th March 2010, 07:55 PM

Almost certainly the fuel pressure regulator, also known as the fuel block. It is at the rear drivers side of the engine, attached to the side of the cyl head. About an hour max to change if you have a manual trans, about 45minutes with an auto as the clutch master cyl is a bit inthe way

Part should be around $400 or so. New Gasket MUST be fitted also.

Common leak I'm afraid

Don't leave it too long, as it also drips onto the starter and ruins the solenoid contacts etc.

JC

**scarry** · 14th July 2010, 07:59 PM

Anyone changed one on a D2a,apparently it's a bit different,has a line that runs around the front of the engine?Looks like a real PITA to change

**Blknight.aus** · 14th July 2010, 10:17 PM

IVE got a thread on doing it in a deefer and have been meaning to do one on a disco but no-ones had one broken at the same time and place as where I've been.

**scarry** · 15th July 2010, 05:36 AM

Thanks Dave,mines decided to weep,just deciding what to do.

**Blknight.aus** · 15th July 2010, 05:59 AM

the correct answer probabley sounds something like.

"I'm going to buy a replacement regulator and gasket from M.R. Automotive in Redcliffe then head over to daves and hold the camera while he does the Disco version of the thread"

gerry_Canavan · 15th July 2010, 03:49 PM

Just be sure it is the regulator,

On both Td5's I have owned, I had a weep from the rocker gasket and I was convinced it was the regulator, what would appear to be diesel would appear to weep out of the regulator when I was running the engine, just a drop or so.

Get a crowbar and break off the rear acoustic shield on the block,
(helps with cooling as well if you do this mod) You can do it properly by removing the bonnet and unscrewing the shield, but this is a bit quicker!

put your hand back there and see if it gets wet(!) with oil.

if the gasket is leaking, fit a new one, spray degreaser all over the regulator and check again after a few hundred K's.

ps if you still have the undershield on, remove it as well, helps the airflow around the block..

**scarry** · 15th July 2010, 06:49 PM

Dave,you were half right,i will send you a PM.

It's definitely diesel,dripping heaps

I did many searches on here & that thread of dave's didn't turn up

To do a disco would be almost exactly as the deefer thread.

**Urban Panzer** · 16th July 2010, 02:32 PM

This may help

www.discovery2.co.uk / Workshop / Fuel Pressure Regulator

Tombie · 16th July 2010, 03:23 PM

Originally Posted by gerry_Canavan

Get a crowbar and break off the rear acoustic shield on the block,
(helps with cooling as well if you do this mod) You can do it properly by removing the bonnet and unscrewing the shield, but this is a bit quicker!

Rubbish! Makes absolutely no temperature difference (tested with laser).
All it does is allows more heat to radiate to the upper firewall.

It DOES however help spot leaks as you mentioned.

ps if you still have the undershield on, remove it as well, helps the airflow around the block..

Rubbish again

Now the directed airflow through the radiator and cooling system is not being directed properly. In hot climates like over here this will result in the engines cooling system working harder than it should.

Diesels like to be warm (hence radiator muffs for cold running).... They dont like to be too warm, but better than cold...

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