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Thread: 300tdi injector pump

  1. 1st May 2009, 12:19 PM #1
    jx2mad's Avatar
    jx2mad
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    300tdi injector pump

    I'm sure I have seen a thread on this but I can't find it. My pump has recently been overhauled and now my defender is blowing quite a lot of smoke and fumes. Far more than before. I feel that the pump is over-fueling and I know this can be adjusted to make it leaner. What is the procedure and how difficult is it? Jim
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  2. 1st May 2009, 12:43 PM #2
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    What colour is the smoke Jim? If its bluey white, then its likely pump timing or fuel starvation. If its black, it's likely over-fueling.
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  3. 1st May 2009, 01:19 PM #3
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    300tdi injector pump

    The smoke is black. Jim
    Jim VK2MAD
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    '17 Isuzu D-Max
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  4. 1st May 2009, 01:32 PM #4
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    Jim, something has gone awry. When a pump is rebuilt it also gets recalibrated. I would be very hesitant about adjusting the main fuelling screw as this should be set.
    Over-fuelling will give it considerably more power. Has it gained in power?
    I'm leaning to 2 possibilities:
    1. the pump has not been calibrated correctly
    2. the timing is set incorrectly
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  5. 1st May 2009, 04:12 PM #5
    bblaze
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    restricted air flow
    blocked air cleaner or colapsed pipe on the air induction side
    cheers
    blaze
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  6. 1st May 2009, 04:20 PM #6
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    300tdi injector pump

    Thanks all. The vehicle is fitted with diesel gas and gets around 8 to 8.5 l/100k diesel with excellent power. It seems to have more power then before pump rebuild so I am assuming since nothing else has been changed that the adjustment is a little too aggressive. Jim
    Jim VK2MAD
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  7. 1st May 2009, 06:40 PM #7
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    Take it back to whoever built the pump and have them check it out, Regards Frank.
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