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Thread: 2.5 TDI turbo lagging

  1. #1
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    2.5 TDI turbo lagging

    My poor Audi has been ill lately and cost me a small fortune getting a head restored after a valve got stuck in the closed position and through out a few followers and lifters, Carbon build up was pointed at along with a late oil change,

    Its had a new cam belt and all the other bits that go with fixing the car,

    it does seem to want a few extra cranks before it fires up, then the car runs ok but it does seem to have a delay on the Turbo kicking in, I've had a real good sniff around the sucker pipes and replaced loads of them, I've even changed the N75 valve but im still getting the same issue,

    any ideas folks ?

    N75 valve
    Audi N75 wastegate bypass regulator valve diesel engine 1K0906627A | eBay

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  3. #2
    6th Gear

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    Most likely timing is out...needs a scan really.
    Turkster likes this.
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  4. #3
    1st Gear

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    Does the V6 have a VNT turbo, vanes sticking would give a delay with the turbo spooling up.
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    Mark

    2001 A4 TDI 130 SE, takes me to work
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    and gives you neck ache, and isn't for sale anymore...
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    Lucky the good lady likes tractors...

 

 

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