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IronKettle

Member Since: 08 Dec 2024
Location: Lincolnshire
Posts: 5

10p Constantly needing purge after head rebuild

Hello!

I've just finished rebuilding the head after one of the hydraulic lifters went.
Prior to filling up with oil I ran the fuel pump for a while with the injectors in to check for diesel leaks and couldn't see any.

I primed the car, cranked it and it fired up. A bit lumpy to start with but then ran great. I've taken it for a few 30min trips to and from work so far and everything seems ok.

However, if the truck has been sat for an hour or two it needs priming & cranking over a bunch again.

Fuel pump and filter housing are relatively new (within the last year or so) and this issue wasn't present before the head rebuild.

Searching around this could indicate the copper injector washers aren't sealing properly, however I'd expect the car to cut out on a drive if this was the case (as combustion gasses get into the fuel rail?).

I don't think any fuel is leaking around the regulator, but could it still be letting air in over time when the trucks sat?

Any advice on what to try would be great!

Truck is a
2000 110 TD5
10p engine (with green top injectors for some reason, only discovered this when rebuilding the head, seems to run fine with them though!)

8th Dec 2024 10:11am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5740

2006 Defender 110 Td5 USW Zermatt Silver

You describing failed seals on the injectors. If you prime on first start all good for the day, and no problems then on, till next time you leave it for a period of time.

8th Dec 2024 10:19am

IronKettle

Member Since: 08 Dec 2024
Location: Lincolnshire
Posts: 5

Damn!

Will I need to drain the oil to do the injector seals again?
Is there a big difference between an aftermarket and OEM quality kit?

8th Dec 2024 11:17am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5740

You don’t need to oil change. I would for the few ££ is costs though. I don’t think you are getting diesel into oil, you are getting combustion gases into the fuel line.

From my understanding yes a big difference in origin of parts apparently. But I fitted the kit supplied by Turners. They know their stuff. OE kit.

8th Dec 2024 3:07pm

tom1979

Member Since: 22 Nov 2021
Location: Bedfordshire
Posts: 18

landy andy wrote:
But I fitted the kit supplied by Turners. They know their stuff. OE kit.

Was the kit from Turners the full top end kit? I cannot see just an injector seal kit on their site -------------
Defender 90 Td5
Discovery 2 Td5 Manual
Discovery 2 Td5 Auto
Range Rover Classic 300Tdi Bobtail
Ranger Rover L322 M57
(and more- yes I have a problem!)

8th Dec 2024 10:16pm

tom1979

Member Since: 22 Nov 2021
Location: Bedfordshire
Posts: 18

IronKettle wrote:
Damn!

Will I need to drain the oil to do the injector seals again?
Is there a big difference between an aftermarket and OEM quality kit?

There is a massive difference, even between was is advertised as genuine! The only ones worth fitting are the genuine seals that come in genuine packaging. Even the Britpart kits that are supposed to be genuine but packaged by them people have issues with regularly.

Also make sure the injector bores are spotlessly clean and that everything is torqued correctly and checked.

https://twinwoods4x4.co.uk/product/genuine...-packaged/ -------------
Defender 90 Td5
Discovery 2 Td5 Manual
Discovery 2 Td5 Auto
Range Rover Classic 300Tdi Bobtail
Ranger Rover L322 M57
(and more- yes I have a problem!)

8th Dec 2024 10:19pm

IronKettle

Member Since: 08 Dec 2024
Location: Lincolnshire
Posts: 5

Picked up a set of genuine seals from rimmer bros (they're fairly local to me) and the problem has gone! Starts up without issue now.

27th Dec 2024 11:59am

revd

Member Since: 20 Apr 2024
Location: England
Posts: 147

👍

Rimmers are a good source of genuine parts

27th Dec 2024 12:12pm

IronKettle

Member Since: 08 Dec 2024
Location: Lincolnshire
Posts: 5

Since rebuilding the head I'm seeing a fair bit of coolant loss.

I'm really hoping the head gasket didn't instantly go / there is a crack in the head?
Starting to really hate this truck

3rd Jan 2025 11:18am

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1632

Fuel cooler?

4th Jan 2025 1:49am

MadTom

Member Since: 10 Sep 2013
Location: Olomouc
Posts: 628

Once I had problems with bubles in fuel. We added a piece of clear tube to fuel pipes commin to and back from engine, jus to clearly see the bubles there.
Also one big bad experience with Britpart - fuel filter head replaced, because original was corroded and broke. It was.working, but it was hard to purge the fuel system. After few days it was neede to purge again, again very hard. I have replaced both pastic valves from old head to the new, and it was perfect. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo

5th Jan 2025 9:03pm

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