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Vaccume leaks!!!!!

Discussion in 'VN - VP Holden Commodore (1988 - 1993)' started by PaRaDoX, Feb 25, 2007.

  1. PaRaDoX

    PaRaDoX Because Racecouch...

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    hey... soo my boosted v6 is revving fine but just not idling like she should (rough)

    the car dosnt stall at all...

    just my vaccume gauge reads 10-15 inHG and when u rev it the vaccume builds to 20inHG, insted of towards 0psi...

    ive checekd all hoses and replaced inlet gaskets/valley seals and it still does it...
    anyone got any theories..
     
  2. immortality

    immortality Can't live without smoky bacon! Staff Member

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    does the vacuum reading fluctuate when idling
     
  3. PaRaDoX

    PaRaDoX Because Racecouch...

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    yeah it does like +/- 2

    weird... u rev it.. revs fine, vaccume sits at round 20inHG, u let throttle go... stays at 20inHG untill 1500rpm when it hits idle and vaccume drops back to 10inHG

    found oil + water out the exhust (right at the end)

    i got a compression tester, im gonna do a comperssion test on the cyclinders...
     
    Last edited: Feb 25, 2007
  4. PaRaDoX

    PaRaDoX Because Racecouch...

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    v6 is going in the bin... picking up a low km VP v6 this week
     
  5. immortality

    immortality Can't live without smoky bacon! Staff Member

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    is that +/- 2" if it is then there is definitly a problem in the motor.

    does sound like you need it with all the troubles you have had with it. i'd suggest giving it a birthday before using it to be safe also. bearings/rings/gaskets etc. maybe tickle the heads with a die grinder whilst your at it also
     
  6. 05 VZ SS

    05 VZ SS New Member

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    Unlucky Paradox616.:ranting: ..You'll get there though...Chin up :thumbsup:
     
  7. PaRaDoX

    PaRaDoX Because Racecouch...

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    well before i jump into the engine swap im gonna rip the heads off and take a peak, if the headgaskets / heads are just gone then ill probbly just swap them , ive identified the crappy cyclinders so i know where to look...
     
  8. pandaman

    pandaman Aussie Muscle Fan

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    So you've done the compression test? what where the results?
     
  9. PaRaDoX

    PaRaDoX Because Racecouch...

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    the results said "holy ****, wheres my compression gone"

    then the headgasket said "ive been hit"

    [​IMG]

    its fixable so it shall be fixed, copper headgaskets this time
     
  10. les82

    les82 Member

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    what a pain in the ass man ive felt your pain before
     
  11. PaRaDoX

    PaRaDoX Because Racecouch...

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    easier to change headgasket than engine :p

    ACL copper headgaskets ordered, should have them tommorrow

    cars sitting in the garage with the heads off waiting for new headgaskets
     
  12. immortality

    immortality Can't live without smoky bacon! Staff Member

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    wow, never seen 'em that bad. might as well tickle the heads while you have 'em of, de carb and lap the valves in to make sure you got a good seal there etc
     

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