Results 1 to 5 of 5

Thread: underpresure is 2.9psi

  
  1. #1
    Status
    Online
    ZAFIRAOPC's Avatar
    AOC Regular
    Join Date
    Oct 2005
    Posts
    155
    Mentioned in
    0 Post(s)
    Quoted
    1 Post(s)

    underpresure is 2.9psi

    these two weeks my car is showing in idle underpresure of 2.9psi but i know that it must have 9.8 is this normal in a z20let and how can i fix this?

  2. #2
    Status
    Offline
    spanishfly's Avatar
    AOC Fanatic
    Join Date
    Jul 2003
    Posts
    418
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Sound slike an air leak in the manifold

  3. #3
    Status
    Online
    ZAFIRAOPC's Avatar
    AOC Regular
    Join Date
    Oct 2005
    Posts
    155
    Mentioned in
    0 Post(s)
    Quoted
    1 Post(s)
    i know that i don't have an air leak can it be something else

  4. #4
    Status
    Online
    ZAFIRAOPC's Avatar
    AOC Regular
    Join Date
    Oct 2005
    Posts
    155
    Mentioned in
    0 Post(s)
    Quoted
    1 Post(s)
    all the time inidle i had -67bar now i have -20bar and i don't know how to tell it underpresure or vacum?

  5. #5
    Status
    Offline
    C00PER's Avatar
    AOC Obsessed
    Join Date
    Mar 2008
    Posts
    2,291
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    I take it you are using a boost gauge to read this, are you sure the gauge is working properly??

    If it is okay then you DEFINATELY have an air leak mate no doubt about it as your engine will always give the same vacuum reading unless you have head gasket / piston trouble etc

    I take it it is idling okay, if so at what rpm??
    FORMERLY WAVEYBLUEWATER

Similar Threads

  1. 415bhp at 9psi
    By dannysport18 in forum Turbo Petrol Engines inc. Transmissions
    Replies: 51
    Last Post: 23-03-2012, 09:01
  2. Boosting at 9psi
    By MeasorPaul in forum Turbo Petrol Engines inc. Transmissions
    Replies: 5
    Last Post: 13-03-2011, 01:00

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •