Ok currently the low pressure side is;

low pressure 371.1

High pressure 30705


Again both in kpa FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

theanswers wrote:

Cheers Lads. I might give that a try.

Low Pressure; 398
High Pressure 1048.

Both readings taken when car was turning over. How do they look?

I don't think it's the injectors as I've just had all tested and reconditioned.

Low pressure is fine

High pressure is too low. This can be a regulator valve issue, HPFP, fuel leak, or a faulty injector

A leak off test takes 20 minutes to do, and costs nothing. That would be my starting point

Will do the leak off test early next week. What is the regulator valve issue you speak of?

Furthermore, using a spare injector I placed it in side a clear bottle and connected it up to both the fuel rail and wiring. No liquid sprayed into the clear container when turning over. Is this normal.

Regulator valve is on the back of the HPFP, and controls the high side fuel pressure

If it's stuck open, the system will not build enough pressure to let the car start

Did you try it across all of the electrical connectors as that could point to one of the connectors being duff?

It could also be the system refusing to fire the injectors... FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

kingpleb wrote:

Very true you don't need the glow plugs unless it gets to -10 or lower they then help with cold starting quite a bit!

Also it may not be the plugs themselves but the glow plug relay. I've seen this fault log on mine a few times but then go away when I want to look at it in depth  FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

It's unlikely to be glow plug or glow plug relay related. .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

It wont be glow plug related. The fault lies between the LPFP and fuel being injected

True but it's best to fix it when in there as they are a butt wipe to get to so worth the time doing it while testing bits in there  FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

It looks like someone was at it before as one of the glow plugs is literally sheered and therefore most certainly not working. so will have to skip the glow plugs for now. And Yes- it is the relay according the computer/ The lights does not come up on the dash.

Few questions guys; so please don't mind me.

Mikey - How would I check the regulator Valve to see if it's stuck open?

Is there a particular injector that fires first? Should they all operate on turning over? I imagine they should. Any particular test method to check the wiring?

Cheers' again guys.

Here's the wheeler dealers episode where he sorts out the injector loom.

He does a leak off test to find the dodgy injector, then re tests that injector on another cylinder to find out it works ok - proving the loom is at fault.

Edit - looking at it, that's not how he did it. He used a spare injector to test.

It's ok I have spare injectors here too.

Just checking. Turning over with each injector disconnected makes no difference. It doesn't even raise a fault on the handheld.

Furthermore - the car is not detecting the faulty glow plug relay. I wonder why this is? It always found the glow plug relay to be at fault yet does not detect that now. Perhaps there is a fuse or something blown?

Which fuses should I be looking at to check the injectors?

I will give the wheeler dealers episode a watch too! thanks

You need,

A spare injector
An empty clear plastic bottle that the injector can sit is flexible high pressure line.

If you take the injector supply pipe off and take it to pirtek or the like they could make one up cheap enough.


For your glow plug issue there is a thread on the binmer forum that shows how to get snapped glow plugs out but I'd start soaking it in penetrating fluid on them and look to get the whole lot sorted.
Also you'll find instructions on doing the glow plug relay unit as well.

Taking the inlet manifold off will makr both of those easier and only costs a few more quid for the correct gaskets. FFRR MY06 facelift With TDV8 Alloys Zeros/ATR's
Mantec Sump Guard, Rigid Load liner, MY10 BT upgrade.

theanswers wrote:

Furthermore - the car is not detecting the faulty glow plug relay. I wonder why this is?