406 HDI FUEL FILTER HOUSING

[womble171]

Thanks for the info on screen capture.
I am in Liverpool. I just dont wanna have the hassle, and expense of replacing the pump when it turns out to be the loom or something wire related which someone else seems to think it is? I did get another loom off eBay but it's slightly different so it's just sitting there with my spare lp pump, 2 pressure regulators an a ecu/BSI an transponder chip!!

It's the non bulging of the filter head that has me puzzled more than anything

[madmadmax]

i just had a thought that it may have broken/bent one of the woodruff keys unlikely only ever herd of it happening to the xuds

[womble171]

What's a woodruff key

[steve_earwig]

What is this google of which you speak?
https://www.google.hr/search?q=woodruff ... 47&bih=604

[womble171]

Well I now know what a woodruff key is.....defiantly never got one of them when I bought the car, I only got door and ignition key

If the woodruff key had snapped or broken then would that stop the pulley wheel from turning?
I have got the timing belt cover off and everything seems to turn as it should???

[Doggy]

I guess the pulley would turn, but the hp pump shaft wouldn't.

[womble171]

I will get someone to crank the car later an I will keep an eye on the shaft.

Thanks guys.

[Doggy]

Don't know if you've got any further with this, but a recent problem of mine might cast a bit of light on the situation. On my way home this evening, mine more or less died - engine kept going, but if I tried to accellerate at all, it just went flat, also strong smell of diesel, then EML light / antipollution fault.......

Dark / no torch, so crawled home, to find the pipe from the lift pump had virtually popped off the fuel filter. Godawful mess.

Seemed to clip back on OK and it starts, but the light's still on, so once the laptop's charged a bit, I'll read the fault code(s) and post here for comparison.

[grasmere59]

Those push fit connectors always seem iffy to me,give me an old fashioned banjo bolt connection anyday.

[steve_earwig]

Did someone say banjo?

[lozz]

[madmadmax]

Don't know if you've got any further with this, but a recent problem of mine might cast a bit of light on the situation. On my way home this evening, mine more or less died - engine kept going, but if I tried to accellerate at all, it just went flat, also strong smell of diesel, then EML light / antipollution fault.......

Dark / no torch, so crawled home, to find the pipe from the lift pump had virtually popped off the fuel filter. Godawful mess.

Seemed to clip back on OK and it starts, but the light's still on, so once the laptop's charged a bit, I'll read the fault code(s) and post here for comparison.

i had a pipe pop off and it did it more and more so i would replace it thay are cheep from the delers

[womble171]

My pipes are good an locked into position well so that rules that out unfortunately

Someone is going to check my ecu/bsi out for me as I was having a few problems reading it with planet. Seems could be down to the wiring look?? Fingers crossed

[Doggy]

My pipes are good an locked into position well so that rules that out unfortunately

Sorry, I wasn't suggesting that was your problem, but thought the resulting error messages from my incident could possibly be compared with yours......(then I forgot to post them).
Only one fault:

Engine ECU
Intermittent fault. Diesel high pressure monitoring function. Pressure below the ECU reference value.

No surprises there, but this does confirm there is no error checking on the lift pump / LP circuit, the only sensor involved is the fuel rail pressure sensor.

As this should be recording around 200 Bar while cranking and say 300 Bar / 4500 psi at tickover, is it worth trying to see what you've actually got using a hydraulic pressure guage?

[womble171]

How would I go about checking that out please? My cousin has a diesel injector pressure tester, could we possibly connect that up to it and if so, where?