Results 1 to 5 of 5

Thread: High boost pressure

  1. 29th March 2018, 03:46 PM #1
    Ranga's Avatar
    Ranga
    Ranga is offline Moderator
    Join Date
    Feb 2008
    Location
    Scarborough, QLD
    Posts
    3,315
    Total Downloaded
    0

    High boost pressure

    Driving to Canberra today, the boost pressure alarm set at 25psi is triggering more and more frequently. Not really pushing the old 300tdi any more than usual. Any ideas regarding cause, solution and possible ramifications?

    Edit: forgot to mention that EGT temps seem normal (<500)
    Reply With Quote Reply With Quote
  2. 29th March 2018, 04:50 PM #2
    nick_e
    nick_e is offline Fossicker
    Join Date
    Feb 2013
    Location
    Perth, Western Australia
    Posts
    80
    Total Downloaded
    0
    Faulty wastegate actuator?

    The wastegate should be opening when the ideal pressure is reached. If it is not opening for some reason then the boost pressure may rise above normal operating pressures.

    Not sure if this is a problem or not at the pressures its reaching. Probably making it run quite lean.
    Reply With Quote Reply With Quote
  3. 29th March 2018, 04:55 PM #3
    nick_e
    nick_e is offline Fossicker
    Join Date
    Feb 2013
    Location
    Perth, Western Australia
    Posts
    80
    Total Downloaded
    0
    Actually, If you have boost gauges/alarms and EGT gauge then I assume your running some type of boost regulator on the wastegate vacuum line?

    Is this functioning correctly?
    Reply With Quote Reply With Quote
  4. 29th March 2018, 05:59 PM #4
    Ranga's Avatar
    Ranga
    Ranga is offline Moderator
    Join Date
    Feb 2008
    Location
    Scarborough, QLD
    Posts
    3,315
    Total Downloaded
    0
    Quote Originally Posted by nick_e View Post
    Actually, If you have boost gauges/alarms and EGT gauge then I assume your running some type of boost regulator on the wastegate vacuum line?

    Is this functioning correctly?
    Gauges yes, regulator no. Hopefully someone at Cooma might be able to help me check the wastegate. If I stick under 25 would I be doing any real damage?
    Reply With Quote Reply With Quote
  5. 29th March 2018, 07:04 PM #5
    bee utey's Avatar
    bee utey
    bee utey is offline AT REST
    Join Date
    Apr 2009
    Location
    Crafers West South Australia
    Posts
    11,732
    Total Downloaded
    0
    It could just be the waste gate operating hose that's split. My mate's had perished and fallen off the back of the turbo, meant the waste gate stayed closed.
    Reply With Quote Reply With Quote
« Loud squealing when applying Brakes on my Defender | defender repairer brisbane/ipswich. »

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

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

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!