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thirsty disco 300tdi auto any ideas

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stageonesimmo:
Not really as all it does is deliver the fuel the engine needs (plus a bit in reserve which goes back to the tank if not needed), so in essence - if the lift pump's working below par, the engine cant use more fuel as the pump cant deliver it.

Have you got any smoke issues - i.e. big clouds of black stuff on pull away or on heavy throttle?  This would point to it over-fueling and is a good indication as james points out, of a clogged air filter.  I'd start there then put a good couple of doses of injector/fuel system cleaner through it  then watch the MPGs for a bit and see if they improve.

Other than that, not much to add as I'm not too familiar with the EDC or autos as all of my LR products have, or had, no such tomfoolery attached.........

muddyjames:
re the clouds of smoke under heavy throttle.

Mine does that and I can only see it when towing up a steep hill as the smoke is only visable on the white background of the caravan front! I was told it is the timing or fuel pump has been tweaked. Maybe this might be an issue for you to look at too if you have smoke.

I am guessing on mine it is the fuel pump as it is an ex police engine.

what does the edc do, look like? Dont think I have it on my M reg.

Cheggs:
I  Only get smoke if I use excessive revs About 3500+ rpm but only did that once, when seeing how hard I could push it when I first got it, I have had one load of Reddex for Diesel through her, I'll try that again, once I have had the Pulley stud helicoiled, How would I be able to check if the fueling has been turned up, because it certainly doesn't show in the performance?

stageonesimmo:
In essence, you cant!  The bolts and diaphragm aren't marked at manufacture so if they've been moved you wont be able to tell.  You can however look at the fuel stop pin, (under the diaphragm with lives under the round cap with the bolts at the timing case end of the FIP), and see if it has evidence of an older wear groove on it, this would show that the diagphragm has been moved so possibly the other settings have as well............ The old groove would be anti-clockwise of the current one as will show that its been rotated to allow the stop pin to move out further before halting the fueling, thus putting in more fuel for any given boost.......

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