406 SV Problems
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Thread: 406 SV Problems

  1. #1
    Member pokinacha's Avatar
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    Default 406 SV Problems

    Hey everybody,

    my D8 SV has been starting to jolt in acceleration. when it's at at good temp it's starting to cough through the rev range up to 4000rpm. When revs are low, 2000-3000 it surges intermitantly with pops from the back that sound like over run crackle and when it gets to about 3900 the power comes on as most SV's do.

    anyone have any idea what the prob is? I have to find out before the extended warranty runs out.

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    cheers,


    Tim

  2. #2
    1000+ Posts kermit's Avatar
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    Could be anything from poor fuel to a bad sensor.
    Cheers Simon
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  3. #3
    Member pokinacha's Avatar
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    only fuel i use is 98 Optimax, or BP Ultimate.

  4. #4
    1000+ Posts kermit's Avatar
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    Quote Originally Posted by pokinacha
    only fuel i use is 98 Optimax, or BP Ultimate.
    The problem with 98RON fuels is there usage is less than 91RON, thus they can be sitting in the servo's storage tank for long periods of time gathering water.
    Cheers Simon
    >8-]

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  5. #5
    Member pokinacha's Avatar
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    Quote Originally Posted by kermit
    The problem with 98RON fuels is there usage is less than 91RON, thus they can be sitting in the servo's storage tank for long periods of time gathering water.
    Ok, how do i get rid of that?


    Ta

  6. #6
    1000+ Posts kermit's Avatar
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    Quote Originally Posted by pokinacha
    Ok, how do i get rid of that?
    If you've got a lot of water in your fuel you'll need to drain the tank. Does the servo you fill from have a high turnover of 98? If so then it probably isn't a fuel issue, more like an engine sensor problem.
    Cheers Simon
    >8-]

    Rendezvous Adelaide 2005

    Polo Green '01 406 Coupe (5spd Man)
    Tuscany Green '00 206 GTi (Croaked!)

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  7. #7
    Member pokinacha's Avatar
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    Quote Originally Posted by kermit
    If you've got a lot of water in your fuel you'll need to drain the tank. Does the servo you fill from have a high turnover of 98?

    Not sure. Its the main Shell servo in Bathurst so i'd assume so.

  8. #8
    Fellow Frogger! Phil Whitton's Avatar
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    An old method is to mix some metho (about a cup full) into the tank. It absorbs the water and cleans the lines. Havent needed to try it with the 406 but it works with the older carby type Pugs.
    Bon Chance

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