DISCO3.CO.UK - View topic - HELP REQUIRED STARTING NEW D3 ENGINE

Disco_Mikey

Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20794

2005 Discovery 3 TDV6 HSE Auto Cairns Blue

IIRC, they only fit one way My D3 Build Thread

TDV8 Retrofit Build Thread

2nd Mar 2014 4:46 pm

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

2007 Discovery 3 TDV6 XS Manual Barolo Black

just had a look around the pump and all seems dry. Any thing that I could check. Could you get the pipe on the fuel cooler wrong way round? cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

2nd Mar 2014 4:49 pm

M3DPO

Member Since: 22 Sep 2010
Location: Notts.
Posts: 8166

2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris Grey

If you have got the early type fuel filter you can fit the pipes wrong way round, don't know if this would restrict fuel supply.
You need to bleed the fuel until you have a steady stream without any air, if you have air in the system the fuel cannot be pressurised and could give the fault code you are getting. It can when others can't,
It will when others won't,
It goes where others don't.

2nd Mar 2014 7:47 pm

ridgeback_moor

Member Since: 11 Mar 2008
Location: Gateway to the Moors
Posts: 1789

2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway Grey

I fitted a cheap fuel filter off eBay a few years ago (the earlier, larger vetsion) , and the vehicle wouldn't start at all. It was definitely connected correctly. Refitted the old one (genuine LR) and it started straight away. Previously:
2005 D3 2.7 TDV6 S
1984 90 2.25 Petrol CSW
1992 90 200TDi Hard Top
1995 Discovery ES 300TDi
2003 90 TD5 Truck Cab

2nd Mar 2014 9:51 pm

Valhalla

Member Since: 23 Oct 2011
Location: Isle of Skye
Posts: 124

Did you have any fuel at the HPFP before turning the engine? What state was the engine delivered in - pre_run, overhauled, etc.etc.

If the HPFP is run dry, and the engine turned over, you will embolise (air-lock) the volume control chamber under the pistons. All SiemensVDO pumps are fitted pre-primed to the 2.7TDV6 builds, but they must have a good supply of fuel before you turn the engine over. If not, then you will have to hope that you get lucky, and try to vacuum pump some fuel through from the injector side of the pump (not much chance, IMHO). Otherwise, it's pump-off, send to a fuel test rig that can run it up to enough shaft speed to get the air out (which is how SVDO got the pump primed and tested in the first place), then fit it carefully again.

You will never turn a TDV6 over fast enough on a starter motor to get the HPFP shaft speed up to purge air. You need to have got lucky and had enough fuel washing around the priming ports to the pistons in the first place. It's a peculiarity of the SVDO design.

3rd Mar 2014 1:29 am

Disco_Mikey

Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20794

I have got lucky every single time then. Even when the pump has been run dry, as I forgot to bleed the fuel system adter replacing the filter My D3 Build Thread

TDV8 Retrofit Build Thread

3rd Mar 2014 7:51 am

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

M3DPO wrote:
If you have got the early type fuel filter you can fit the pipes wrong way round, don't know if this would restrict fuel supply.
You need to bleed the fuel until you have a steady stream without any air, if you have air in the system the fuel cannot be pressurised and could give the fault code you are getting.

Thanks for your help.i have later filter but will look into this .

cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

3rd Mar 2014 7:36 pm

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

Disco_Mikey wrote:
I have got lucky every single time then. Even when the pump has been run dry, as I forgot to bleed the fuel system adter replacing the filter

Hi mikey as per last suggestion would i need to take off return pipe to see if i get a return of fuel from the HPFP. cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

3rd Mar 2014 7:38 pm

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

Disco_Mikey wrote:
Fuel leak, lack of fuel, or HPFP (or drivebelt)

hi checked fuel pressure while cranking over engine and code reader showed me 140mpa.Could this be the problem? cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

4th Mar 2014 7:27 pm

M3DPO

Member Since: 22 Sep 2010
Location: Notts.
Posts: 8166

I make that 20380psi

that is more than enough to start, are you sure it was MPa and not KPa? It can when others can't,
It will when others won't,
It goes where others don't.

4th Mar 2014 7:59 pm

Disco_Mikey

Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20794

140kPa while cranking is enough pressure to allow a start. My D3 Build Thread

TDV8 Retrofit Build Thread

4th Mar 2014 8:04 pm

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

i am not sure now .would it still start if that was different? cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

4th Mar 2014 8:06 pm

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

Disco_Mikey wrote:
140kPa while cranking is enough pressure to allow a start.

after putting the code reader on it tonight it only comes up with fuel pressure stuck low now-what could this be .I am a bit frustrated with it now.... cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

4th Mar 2014 8:07 pm

M3DPO

Member Since: 22 Sep 2010
Location: Notts.
Posts: 8166

It would not start on 140KPA=20psi

It can when others can't,
It will when others won't,
It goes where others don't.

Last edited by M3DPO on 4th Mar 2014 8:12 pm. Edited 1 time in total

4th Mar 2014 8:07 pm

fast1cars

Member Since: 27 Dec 2013
Location: bury st edmunds
Posts: 72

ok so what is the problem with it?please somebody help me..........

cheers John

Classic rangerover 3.5 V8 -sold now
Classic rangerover -6.2 gmc deisel sold now
Classic rangerover 3.9v8 sold now
P38 4.0 v8 sold now
Disco 1 3.9v8 sold now
Discovery 2 TD5 just sold
sierra cosworth with 498BHP fastest car I have ever owned-now sold
megabusa currently lots of fun
current Disco 3- broken at the moment

4th Mar 2014 8:09 pm