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Thread: 300Tdi injector pump leak

  1. 8th July 2014, 05:11 PM #1
    Leo109's Avatar
    Leo109
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    300Tdi injector pump leak

    Hi All,

    Trying to find a 'new' leak on my '97 Discovery 300Tdi injector pump.

    A few months ago I fitted a new throttle shaft bush and seal kit from a UK supplier. This seems to have fixed the throttle shaft weep I had for some time.

    However there now seems to be another weep/leak. The throttle shaft/top cover area seems to be dry but there's a small puddle of dirty diesel on the floor (well, sheet of cardboard to catch the drips) every time I park lately. There's usually a drop of clean diesel hanging off the bottom of the oil filter when ever I look up from below but I can't see exactly where it's coming from.

    Any suggestions of where to look, dear gurus of matters LR? Is there another common place for leaks to develop?

    Thanks,
    Ian
    Ian &
    Leo - SIII 109/GMH3.3
    Daphne I - '97 Disco 300Tdi Manual
    Daphne II - '03 Disco Td5 Auto
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  2. 8th July 2014, 06:06 PM #2
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    steveG
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    Run your hand under the bottom of the lift pump.
    Its common for them to leak.

    Steve
    1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
    1988 120 with rust and potential
    1999 300tdi 130 single cab - "stock as bro"
    2003 D2a Td5 - the boss's daily drive
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  3. 8th July 2014, 06:47 PM #3
    jboot51
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    Trick for finding leaks,
    mix up some metho and baby powder and paint it on the suspect area.
    the metho dries leaving the powder behind, any leaks are easy to see.
    '95 Defender 130 Single Cab
    HS2.8 TGV Powered
    ------------
    98% of all Land Rovers built are still on the road.
    The other 2% made it home.

    Cost difference between Britpart and Genuine seals: £2.04. Knowing that your brakes won't fail at any moment: Priceless.
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  4. 13th July 2014, 09:04 PM #4
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    INDIE2002UK
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    Mine just started leaking from the distributor head seal. Only small drip while running. Been told its quite common. Not sure wether to reseal or rebuild as 350,000km old
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  5. 16th July 2014, 03:05 AM #5
    Jode
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    Quote Originally Posted by INDIE2002UK View Post
    Mine just started leaking from the distributor head seal. Only small drip while running. Been told its quite common. Not sure wether to reseal or rebuild as 350,000km old
    Re-build would probably be a good idea. But be warned - getting the distributor head back onto the pump body is a real pain in the backside, as you've got to bring the two parts together while finaggling four springs into position....
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  6. 17th July 2014, 07:03 AM #6
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    INDIE2002UK
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    Befor I try on my own pump, I have a friend in Sydney who's send a old unit I can try on first before I send springs flying every where. I did think about getting second hand out of uk as there quite cheap but are only posting local saw a few on eBay uk, they where egr one,s thou.
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  7. 18th July 2014, 11:47 AM #7
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    eddy
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    Must be the time of year for injection pumps to leak.Mine is leaking from a 6mm allen screw fitting on the front of the pump,it drips only when motor is running.See my thread timed 12 minutes after this one.Our '95 300tdi developed a leak recently....which turned out to be one of the olives on the lift pump not tightening up on the outlet pipe,fixed with some thread tape!
    Indie can you tell me what is behind, ie is it safe to remove,the 6mm allen screw just below the outside mounting flange.
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  8. 18th July 2014, 09:38 PM #8
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    INDIE2002UK
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    image.jpg

    Hope this attachment worked my computer dead and stuck with this I phone. Should be an attachment of pump pic
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