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Freaking out!! Oil on top of gearbox?!

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by Stef-vy, Sep 9, 2018.

  1. Stef-vy

    Stef-vy Member

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    I've noticed lately my vx commodore v6 has been using the oil more often than usual, dipstick was just under add and low. and I pulled it in the yard last night and popped the bonnet and I could see splashed oil all over the gearbox and back end part of the engine bay.. a bit scary is this my main manifold gasket or something worse? Cheers anyone would could help a girl out..
     
  2. The1

    The1 A Memcal a Day Keeps..

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    pretty common, the top seal between the inlet gaskets prob is leaking, could also be pcv valve not working well enough so pressure is fed past the seal.
     
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  3. Stef-vy

    Stef-vy Member

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    Thanks heaps, if it's the top seal do I have to change any of my fluids or anything else after changing gaskets or it's okay?
     
  4. losh1971

    losh1971 Well-Known Member

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    As said above manifold most likely needs to come off, common place for Eco's and Buicks to leak from. Need to drop the coolant. If the coolant is fairly new you can try to catch it and reuse it, if you filter it through a rag. About 1.5hrs to tear it down and about 3hrs to put it back together, as clean up takes over an hour.
     
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  5. Craig Facey

    Craig Facey Member

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    First check for bubbles or oil in your coolant.... If found then don't drive anywhere until you've fixed the problem.... Then do a compression test (the tool costs like $30ish online) ... As far as I'm aware anything else isn't as urgent or scary? Just keep her topped up until you fix it...

    I'm no expert! I've just been doing most of my own work for years and I read all my workshop manuals .. If I'm wrong then somebody tell me please?! :)
     
  6. Stef-vy

    Stef-vy Member

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    Thanks heaps everyone.
    I'll update when I find out the problem. got the car out the back now so I'll sus everything better first thing in the morning. Also might have lost my oil sensor because I never got an oil light when it was almost completely out?
     
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  7. Lex

    Lex Well-Known Member

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    Degrease, clean, then keep an eye on it until you can work out were the leak is coming from. Possibly only a rocker cover gasket or two?
     
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  8. Stef-vy

    Stef-vy Member

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    Does the brake booster run to the pcv valve? Because now I'm hearing air sucked back or out either one, everytime I push my brake on... even in park? Bit confused now
     
  9. losh1971

    losh1971 Well-Known Member

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    That's a different problem again, possibly the booster.
     
  10. Stef-vy

    Stef-vy Member

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    Must be something to do with when I installed it then, because it had no brakes when I brought the car, so I put a vy brake booster into the vx. I'm trying to see if it's just something simple I forgot like loose nut or hose, but I'm not having much luck at the moment, I can hear the noise when bonnets popped and cars running, seems like it is coming from area near the booster
    Maybe a line or something?
     
  11. losh1971

    losh1971 Well-Known Member

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    Could be
     
  12. Craig Facey

    Craig Facey Member

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    Sounds like you've got a vacuum leak.... check youtube on some simple methods to find where it is.... In some of the older cars I've owned its been as simple as spraying some carby cleaner on the vacuum hoses while someone taps the brakes etc with the engine running and usually I've found that one of the vacuum lines is deteriorated around the join... often they are long enough that you can disconnect them then use a sharp knife to trim the damaged/stretched section then reconnect them.. or else replace the whole line... the hoses are usually pretty cheap....

    Hot tip = if a line is difficult to remove from its connector then consider using a hot air gun to heat the rubber first... otherwise you could break the connector off inside the old line and some of those parts can be costly and/or a pain to find....

    Good luck... let's hope its not your brake booster... that's a bigger job....
     
  13. Stef-vy

    Stef-vy Member

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    Could I use this pcv valve? It's out of my vy series 2
    And should it have an o ring on it or just like so in photo?
     

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    Last edited: Sep 12, 2018
  14. immortality

    immortality No more smoky bacon :( Staff Member

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    The PCV valve is internal and at idle would be bypassing a fair bit of air but you wouldn't hear it. Most likely you have an external vacuum leak so I'd be looking over all the vacuum lines and fitting first.

    Yes, the PCV has an O ring around it, quiet often then stick inside the manifold when removing the valve.
     
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  15. Stef-vy

    Stef-vy Member

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    Thank you.
    I will give it a check over tomorrow, also the o ring definitely did not come out with PCV so I'll check to see if it will come out easy or worth buying a new one if possible.
     

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