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dazzling1611



Member Since: 08 Jun 2020
Location: morpeth
Posts: 35
United Kingdom 2011 Defender 90 Puma 2.2 HT Bronze Green
puma 2.2 Fuel pressure relief valve
Hi guys im after some help , does the 2.2 have a pressure relief valve fitted , ive replaced the pressure control valve as i was getting high fuel pressures on idle and now im getting injector errors on all injectors, its coming up cylinder 1/2/3/4 balance injector leaking.


I'm guessing the high pressure must have blown the relief valve but where is it , in the pump?
Post #881573 28th Jan 2021 4:11pm
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HK07



Member Since: 15 Dec 2016
Location: Hampshire
Posts: 746
England 2007 Defender 90 Puma 2.4 HT Cairns Blue
What a brilliant idea, can you fit PRV on diesel injectors? 2007 90 Puma - Love it - Best car I have ever owned.

1989 Ninety 200tdi - Love it - Second best car I have ever owned.

1951 80" Series 1 - Love it - Third best car I have ever owned.
Post #881588 28th Jan 2021 5:12pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17361
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
If the 2.2 is the same as the 2.4 (and I don't see why it wouldn't be for this) there is a non-resettable PRV in the fuel common rail, located at the bulkhead end of the rail. When popped, it returns the fuel to the tank.
Post #881596 28th Jan 2021 5:38pm
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dazzling1611



Member Since: 08 Jun 2020
Location: morpeth
Posts: 35
United Kingdom 2011 Defender 90 Puma 2.2 HT Bronze Green
blackwolf , thats what i thought , but all i see on the bulk head end of the rail is the pressure sensor.
Post #881606 28th Jan 2021 6:13pm
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dazzling1611



Member Since: 08 Jun 2020
Location: morpeth
Posts: 35
United Kingdom 2011 Defender 90 Puma 2.2 HT Bronze Green
so further research into the 2.2 , its the euro 5 ford engine which doesnt have the PRV valve and its all controlled by the pressure control valve in the pump and the ecu monitors the pressure.

back to the the autel diagnostic for me and see whats happening with fuel pressures

Im getting cylinder balance injector leaking faults on all injectors, mmmmm
Post #881619 28th Jan 2021 7:27pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17361
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
That's interesting! If you look at this thread it becomes apparent that the 2.4 and 2.2 are different, and it seems that the 2.2 does not have the PRV that the 2.4 has.

The 2.4 has the sensor at the front of the rail and the PRV at the rear. Perhaps the over-pressure relief is integral with the pump on the 2.2.

Edit - your post and mine were clearly simultaneous.
Post #881621 28th Jan 2021 7:31pm
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dazzling1611



Member Since: 08 Jun 2020
Location: morpeth
Posts: 35
United Kingdom 2011 Defender 90 Puma 2.2 HT Bronze Green
yes Blackwolf , ive seen that earlier , my fuel pressure sensor seems ok and im getting 260ish bar idle and previous before i replaced the fuel pressure control valve in the pump it was reading about 500 bar at idle and i had huge cloud of smoke out of the exhaust.

i really need to live data the fuel pressures tomorrow on a run as the faults only pop up on a small run. maybe the new fuel control valve is not controlling properly, its not a genuine ford/ land rover item .

ive done all the adaptive resets on the pump , injectors and recoded the injectors just to make sure .
Post #881623 28th Jan 2021 7:42pm
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Julie



Member Since: 07 Oct 2017
Location: Nantes
Posts: 479
France 2012 Defender 110 Puma 2.2 SW Keswick Green
dazzling1611 wrote:
so further research into the 2.2 , its the euro 5 ford engine which doesnt have the PRV valve and its all controlled by the pressure control valve in the pump and the ecu monitors the pressure.


What a surprise. The EU4 is Denso and the EU5 is Bosch equipped
Post #881825 29th Jan 2021 7:56pm
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Edahs



Member Since: 16 Feb 2022
Location: Isb
Posts: 1
Pakistan 
High rail pressure
Hi guys i am stuck would be grateful if some one may help. I am continuously having high pressure at fuel rail. Changed my vcv and fuel rail but no effect on fuel pressure. Can any one guide where the fault may lie.
Post #942703 16th Feb 2022 3:09pm
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