406 hdi hunting surging when first stating
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  1. #1
    Fellow Frogger! Balki's Avatar
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    Nov 2010
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    Sheffield/Tasmania
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    628

    Default 406 hdi hunting surging when first stating

    i have owned 2 406 hdis and both hunt when cold, i never worried about it but a freind has one and wants it fixed, anyone have any ideas as to what causes hdi to do this

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  2. #2
    Fellow Frogger! gromzx's Avatar
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    May 2011
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    melborne
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    364

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    Do they both have high K's?
    My 306 HDi (same engine without intercooler) had this exact problem and got worse with cold weather to. Was around the 250000k mark back then.
    For me the prob was the fuel pressure reg in the back of the H/P pump. going on 350000k now with no problems.
    You can get them for about $400 if you can find a suppler that can source direct from Bosch.

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