Fuel leak at top of tank?

**Charles** · 18th April 2016, 01:29 PM

Hi Guys,
D2 Td5 has diesel filling the depression on top of fuel tank which the fuel pump sits in. I noticed a leak when tank was full and assumed it was one of the 4 hoses. However, when I pulled the fuel pump cover I saw the "valley" was full of diesel and it was running down side of tank creating the "leak"

I now figure it must be the fuel pump to tank gasket although the locking collar appears to be nice and tight.

Suggestions welcome before I pull it apart any further as I don't really want to do more work than needed whilst away from home.

Cheers, Charlie

**Outback 1** · 18th April 2016, 01:35 PM

Could well be one of the fuel lines they are known for rubbing through where they pass between the chassis and the tank

Sent from my SM-G900I using AULRO mobile app

**Charles** · 18th April 2016, 02:16 PM

Hi Ken,
Don't think it's a fuel line given the fuel spill is right up on top of tank (and I have a spare green line just in case and I'm rarely that lucky!). Should have a better idea soon as just about to drop the tank to inspect things properly.
Cheers, Charlie

Ean Austral · 18th April 2016, 02:52 PM

From memory there is an o-ring where the fuel pump goes in the tank it could be that, but my father in law had his fuel pump leak from where the nipples go in the top of the fuel pump so maybe you have the same issue.

If you can access the inspection cover thru the cargo area you will be able to see the top of the pump plus all the 4 (? from memory ) fuel lines.

Cheers Ean

**Charles** · 18th April 2016, 03:02 PM

Thanks Ean, I think this may be a similar issue... amazing how hard it is to see "leaks" when everything has been flooded in diesel!!
Cheers, Charlie

Ean Austral · 18th April 2016, 03:13 PM

Originally Posted by Charles

Thanks Ean, I think this may be a similar issue... amazing how hard it is to see "leaks" when everything has been flooded in diesel!!
Cheers, Charlie

It could still be a rubbed thru hose , the down side of the top of the pump leaking where the nipples are moulded is you need to replace the fuel pump.

When we did the canning stock route trip, 1 of the D2's had a leak on the top like you mention and I think it was a loose fuel line, or it had rubbed thru and from memory we sleeved it with some hose.

Cheers Ean

**Pippin** · 18th April 2016, 03:45 PM

TD5 Disco Fuel pump/sender unit - Land Rover Technical Archive - LR4x4 - The Land Rover Forum There is a more complex rubber seal for the pump than an 'O' ring which is easy to misplace when fitting the pump, this link you will find helpful.
Nick

**Charles** · 18th April 2016, 05:12 PM

Tank out and fuel lines are all good. Diesel is leaking out the fuel pump seal if I tilt the tank to immerse it.

Looks like I will be looking for a replacement seal once I work out what is involved.

Pippin, thanks for link.

Cheers, Charlie

**discorevy** · 18th April 2016, 09:22 PM

I've seen this quite a few times, people fit the pump with the sealing ring above the receptor and think its really hard to screw the cap down . one half of the sealing ring must go below the receptor, you'll have to clean the area and remove the pump far enough to fit the sealing ring correctly...... Should fix it

**Roverlord off road spares** · 19th April 2016, 09:32 AM

Originally Posted by discorevy

I've seen this quite a few times, people fit the pump with the sealing ring above the receptor and think its really hard to screw the cap down . one half of the sealing ring must go below the receptor, you'll have to clean the area and remove the pump far enough to fit the sealing ring correctly...... Should fix it

And some people have stood on top of the pump trying to get the cap to screw on and have broken the pipe outlets.. So don't try and force things.

Thread: Fuel leak at top of tank?

Thread Tools

Fuel leak at top of tank?

Bookmarks

Bookmarks

Posting Permissions