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Thread: 06' Jetta TDI Blue Smoke on Start

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    Verified VCDS User ClassicWolves's Avatar
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    Question 06' Jetta TDI Blue Smoke on Start

    I have a 2006 Volkswagen Jetta TDI 1.9L, 5 Speed manual with 196,000 miles roughly, that has a decent puff of blue smoke when it first cold starts. It does start abit harder at cold start, the smoke clears up within 10 seconds. Ive looked online and people say this is fairly normal. Thou i still feel abit nervous, because, this always happens. I can leave the vehicle for 30 minutes and hot start it and does the puff again. NO CEL CODES.

    Are my Injector seals leaking? Could it be the valve seals? Any suggestions?

  2. #2
    NostraJackAss Jack@European_Parts's Avatar
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    Sounds like seals/guides to me....

    Did you know Double hats on VG seals makes a big difference if going in there & to do guides or you could use a thickening agent additive like STP or Lubromoly motor honey?

    Did you check sump for fuel contamination thinning oil too?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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    Verified VCDS User ClassicWolves's Avatar
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    At first i thought i had fuel contamination due to a strong diesel smell from the oil, i changed the oil not to long ago and i still get pretty decent puffs at startup. It doesnt seem to be using any oil as the oil level doesn't seem to be going down or up for that matter, and I've put almost 2,000 miles on current oil change. The vehicle still runs perfectly fine pretty much at all times. So it might be the valve seals?
    <A Proud Euro Vehicle Enthusiast> '06 VW Jetta TDI 1.9 PD. Engine w/ 5 Speed Manual

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    NostraJackAss Jack@European_Parts's Avatar
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    At first i thought i had fuel contamination due to a strong diesel smell from the oil, i changed the oil not to long ago and i still get pretty decent puffs at startup. It doesnt seem to be using any oil as the oil level doesn't seem to be going down or up for that matter, and I've put almost 2,000 miles on current oil change. The vehicle still runs perfectly fine pretty much at all times. So it might be the valve seals?
    Are you sure the oil level isn't fuel in it Classic Coke?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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    Verified VCDS User ClassicWolves's Avatar
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    I saved a sample of the oil, ill have it sent in so i know what exactly is going on to Blackstone Labs, might as well spend the money to be sure. But as far as i can tell, nothing about the Oil seems unordinary besides a diesel smell in the oil. I dont run the normal oil change intervals, im changing at every 7,000Mi
    <A Proud Euro Vehicle Enthusiast> '06 VW Jetta TDI 1.9 PD. Engine w/ 5 Speed Manual

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    Verified VCDS User PetrolDave's Avatar
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    Quote Originally Posted by ClassicWolves View Post
    nothing about the Oil seems unordinary besides a diesel smell in the oil.

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