Thread: Disco 2 fuel starvation

TD5?

Originally Posted by Eevo

TD5?

Sorry ... yes ... a TD5 ... 2001

My brother had the same sounding issue started in Nov .. fixed itself! .. then started again early Jan out of the blue.
We'd changed the fuel pump, filters, FPR(was leaking anyhow) .. checked injector loom for oil, was OK, changed again anyhow as there was some oil at the ECU plug(red one).

The advice on AULRO was the injector seals, personally I couldn't believe that, but we changed them after lots of checking of other bits'n'pieces(plugs/wires/joins/earths/etc).

Finally got the time to change the injector seals, and problem solvered!

Do you have a nanocom, or can you locate a helpful local that may have one near you?
I have a thread titled cylinder balances in the D2 forum .. and the only clue to when the engine shut itself down was that via the nanocom, on the cylinders page, the balances would indicate pretty even values(+-5 or so) up until about 10sec before the engine shut down.
After shut down it took about 10 mins or so to finally get it running again with much pedal pumping.
Once started, it ran perfectly.

At the 10sec prior to shutdown point, the balances values would vary wildly .. values like -30 +40 etc.

So with this knowledge, I ran the car with an eye on these cylinder balances on the nanocom, and the moment they went wild, I'd shut the ignition off and coast to a stop.
Doing that allowed another 3 or so minute run before the process repeated itself again without any issue starting.
If the engine was allowed to shut itself down, it would then make it hard to start up again. Fuel purging never helped at all over the course of the drama.

Other advice given to me was to make sure seals were genuine, not some cheap alternative .. like ebay specials, or britpart or whatever.

From what you described tho, you said that the FPR doesn't leak, but has it been changed?
I'd assume that a non working FPR would do something similar

Hey Arthur,

Thank you for the reply. I do not have a NanoCom but I will follow your advice and replace the injector seals and washers when I get home from work this afternoon.

The fuel pressure regulator has not been changed.

Just as a matter of interest ... and as far as my common sense goes ... the fuel system is a pressurized system ... therefore no air can be "sucked" into the the system but rather fuel will leak out at a bad connection therefore I can rule out air being the problem?

Originally Posted by DannyD

...

Just as a matter of interest ... and as far as my common sense goes ... the fuel system is a pressurized system ... therefore no air can be "sucked" into the the system but rather fuel will leak out at a bad connection therefore I can rule out air being the problem?

Yep, I think it's 4bar(58psi) of pressure .. or more.

Air won't be sucked in to the system but combustion gasses will be forced in past the leaking copper washers , yep genuine , and make sure injector face and seating face on the head are spotless

+1 for the copper washers.... though if no joy after these the second suspect for this symptom is the crank sensor

There is also a fine mesh filter in behind fpr that may be blocked.