Sky InsuranceAH Fabrications
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  1. #1

    Join Date
    Jan 2008

    oil bubbling in sump!!!wtf

    Ok here is one to pick everyone's brain, just done a pressure test from my TIP(with breather blocked off) to test for boost leaks and split vac pipes and only thing that I could hear is oil bubbling in the sump. Immediately I thought that the head had blown between a cylinder and oil port but as I write this I'm thinking it is most likely coming from the oil return pipe in the turbo ie through the turbo seals! Might be a no brainer but like to know what every one else thinks anyway. Don't see really how air could get back down through the block and bubble in the oil with non-return valves in place.

    Thanks, any comments welcome.

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  3. #2
    Mike.M's Avatar
    5th Gear

    Join Date
    Oct 2003
    Is it a 1.8T?

    If so I think the oil pick up could be blocked

  4. #3
    6th Gear

    Join Date
    May 2012
    How much pressure was used? When I was investigating boost leaks it was advised any more than 5psi could damage seals. Smoke testing draws a 1psi vaccuum iirc. If you think you have a leak would recomend smoke testing, as it picked up my leaks immediatly.
    '02 TDi 130 Sport: Mods to date: BXP 160 conversion, EGR delete, Decat, Helix SMF fast road clutch, 312mm front rotors, full DIS , CC, Xenons.
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