2.7 TDV6 2006

Hi Guys/Girls
Range rover sport 2006 2.7 TDV6 HSE
So i had an unfortunate experience with a petrol station recently not admitting liability
Wife put £25 diesel in up got a receipt confirming she had put diesel in a day later unknowingly at the time i topped of the tank with £65 Diesel from another station car was running fine
Car broke down later that day got towed home by AA
It ran like a bag crap
AA guy suspected mis fuel said it was giving good fuel pressure
I opened up the fuel drain and smelt
Petrol straight away 82lts,of fuel down the drain !
Emptied the tank sucked all remaining fuel from shader valve emptied out everything !
Replaced fuel filter
Bleed the system thru with new fuel in the tank no air in the system
And now i have a non start issue !
So my question is could it be the lpfp ? Failure due to petrol or is it more likely to be hpfp
It will run poorly at about 600rpm with no response from the throttle then dies i cant get it to run long enough to check through the live data to confirm if it has good pressure from the hpfp
Im getting around 7 psi by just switching the ignition on/off at the shrader valve but nothing while cranking
Apologies for the long winded post
Any help is appreciated TIA

Does sound like hpff, I assume you have checked the hpfp belt is still intact?
My thinking is maybe the petrol shagged the hpfp which then seized chucking the belt off.

Cracked the injector pipes and had a sniff of the fuel?

Lpfp does run at silly low pressures, so 7psi sounds right.

lynall said:

Does sound like hpff, I assume you have checked the hpfp belt is still intact?
My thinking is maybe the petrol shagged the hpfp which then seized chucking the belt off.

Cracked the injector pipes and had a sniff of the fuel?

Lpfp does run at silly low pressures, so 7psi sounds right.

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Thanks thats what was thinking im going to get the injectors cracked off and the cover off the hpfp once this weather clears
I did try and give
It a bit of the old sniff today to confirm it was a fuel pressure issue and it does run & rev on a bit of easy start

lynall said:

Does sound like hpff, I assume you have checked the hpfp belt is still intact?
My thinking is maybe the petrol shagged the hpfp which then seized chucking the belt off.

Cracked the injector pipes and had a sniff of the fuel?

Lpfp does run at silly low pressures, so 7psi sounds right.

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Hi Lynall
Next question is can you get tne HPFP off without taking the body off ??
If so do you have any recommendations

Sorry to hear of the agro

body doesn’t need to come off to replace tbe HPFP and indeed as mentioned by @lynall need to ensure the HPFP belt hasn’t come off

wonder if the petrol has affected the LPFP in the tank , or even some of the sensors if petrol have touched them ??

assume all the lines were flushed including the fuel cooler , return lines etc

hope u get it resolved

gstuart said:

Sorry to hear of the agro

body doesn’t need to come off to replace tbe HPFP and indeed as mentioned by @lynall need to ensure the HPFP belt hasn’t come off

wonder if the petrol has affected the LPFP in the tank , or even some of the sensors if petrol have touched them ??

h get it resolved

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Thanks gstuart i was banging my head against a wall a bit i don't mind saying
Some things i have read said the hpfp is very robust and they don't fail very often
Meanwhile the little voice in my head is telling me its a fuel pressure problem
I do t suppose anybody has a workshop manual available by any chance

pete980 said:

Thanks gstuart i was banging my head against a wall a bit i don't mind saying
Some things i have read said the hpfp is very robust and they don't fail very often
Meanwhile the little voice in my head is telling me its a fuel pressure problem
I do t suppose anybody has a workshop manual available by any chance

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ur so welcome , always a team effort

have u seen this by any chance

just seen that it will run on easy start so at least that cuts out sensors etc , so indeed i would have thought it would be down to the delivery / supply side

when u changed the filter do u remember what make it was plse as I’ve heard cheap ones can cause issues

wonder if its worth connecting a tyre valve onto the fuel shrieder valve , ign on and allowing fuel to pump through into a bucket to ensure 100% only diesel is now coming through , maybe changing the filter with a genuine one just in case it still has some petrol inside the filter

just a thought

As its an early one the fuel filter should have the drain knob on the bottom of it, but tbh even if it still had some petrol in the system I would have thought it would run.
Only used Delphi and Mann fuel filters on mine, as have heard same thing as gstuart ref cheap ones.

pete980 said:

Hi Lynall
Next question is can you get tne HPFP off without taking the body off ??
If so do you have any recommendations

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Tbh no idea, but getting the cover off is a bit awkward, I found a large screw driver in from the top and a little prying in the right place popped the cover off, look on ebay for used engines to see where the clips are, only two and they are at the top.

Be aware after 07 the hpfp and injectors are different, so if buying used make sure it is from the correct year.
I would buy used as it rare to hear of one failing, so chances are good you will get a decent one.

lynall said:

As its an early one the fuel filter should have the drain knob on the bottom of it, but tbh even if it still had some petrol in the system I would have thought it would run.
Only used Delphi and Mann fuel filters on mine, as have heard same thing as gstuart ref cheap ones.

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great point ref the water drain point , wonder if the fuel cooler has some petrol still in it or return lines,

seeing it’s an early fuel filter wonder if the pipes are on the correct way

likewise ref filter makes , have used mahle with no problems

shame the OP couldn’t get it to run long enough to pull fault codes or live data , doubt even a blocked map would stop it running seeing it will go to ECM default

maybe the battery VDC would be worth checking along with double checking the fuel filter pipes are fitted correctly

gstuart said:

great point ref the water drain point , wonder if the fuel cooler has some petrol still in it or return lines,

seeing it’s an early fuel filter wonder if the pipes are on the correct way

likewise ref filter makes , have used mahle with no problems

shame the OP couldn’t get it to run long enough to pull fault codes or live data , doubt even a blocked map would stop it running seeing it will go to ECM default

maybe the battery VDC would be worth checking along with double checking the fuel filter pipes are fitted correctly

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Good point on the pipes as they are an arse to access, and by the time you have them off you then forget where they go!

gstuart said:

Sorry to hear of the agro

body doesn’t need to come off to replace tbe HPFP and indeed as mentioned by @lynall need to ensure the HPFP belt hasn’t come off

wonder if the petrol has affected the LPFP in the tank , or even some of the sensors if petrol have touched them ??

assume all the lines were flushed including the fuel cooler , return lines etc

hope u get it resolved

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The OP doesn't mention replacing the fuel filter. I've had to do this very thing several times, as my wife is getting quite good at putting petrol in her diesel cars.

Nodge68 said:

The OP doesn't mention replacing the fuel filter. I've had to do this very thing several times, as my wife is getting quite good at putting petrol in her diesel cars.

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Hi mate

Keeps u from getting board my friend, lol

He mentions it here in his first post , ref

Emptied the tank sucked all remaining fuel from shader valve emptied out everything !

Replaced fuel filter

Bleed the system thru with new fuel in the tank no air in the system

lynall said:

Good point on the pipes as they are an arse to access, and by the time you have them off you then forget where they go!

Click to expand...

plus 1 as i also had to ensure the garage connected them correctly so took a pic to double check , post 07 being a lot easier being a spin off cartridge ,

Hopefully the following will assist to OP for reference as to be honest can’t think of anything else that would stop it running

with it starting on easy start I assume that would then rule out all the sensors and battery ,, so indeed with that in mind the only thing I can think of is wrong fuel filter connections, cheap filter , LPFP , HPFP or belt ?

plus regarding the fuel filter I think the connections are

1) tank supply in yellow
2) fuel cooler return white
3) fuel tank supply out to HPFP large blue
4) vent small blue ( also wonder if this is the fuel cooler outlet , unless its tee’d in somewhere else ? )

This was mine and think the connections were correct

Hi mate can you check live data fuel pressure info comes from fuel rail sensor with give you an idea, as the guys said belt and hp fuel pump is quite doable without body off

tyregeezer said:

Hi mate can you check live data fuel pressure info comes from fuel rail sensor with give you an idea, as the guys said belt and hp fuel pump is quite doable without body off

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I am going to pull the cover off
i have made a link pressure line to go in-between injector and rail ( Man cave time lol) the weather has been horrendous up my way )
So i can physically see what sort of pressure im getting at the rail while cranking just incase the belt is still on and i can identify that the hpfp is truly knackerd

gstuart said:

ur so welcome , always a team effort

have u seen this by any chance

DISCO3.CO.UK - View topic - Robbie's Guide To The Low Pressure Fuel System

Community site dedicated to Discovery 3, 4 LR3 and LR4 Owners and Enthusiasts. Totally free to join - message boards, galleries, wiki, off road events, social meetings.

www.disco3.co.uk

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Yes i have had a good read

pete980 said:

Yes i have had a good read

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brillaint , have u managed to pull any fault codes at all plse, sorry if you’ve already mentioned it

will also be interesting to see what live data u get

as a side note I wonder if ur insurance covers u for miss fuelling the vehicle

many thks