Results 1 to 4 of 4

Thread: Popping noise on start up

  1. 20th November 2014, 09:20 PM #1
    nismine01's Avatar
    nismine01
    nismine01 is offline Master
    Join Date
    May 2012
    Location
    Adelaide Hills, SA
    Posts
    564
    Total Downloaded
    0

    Popping noise on start up

    I used to have a 300TDI Disco I, at one stage it was making a similar noise to this noise on my TD5.

    It turned out to be due to a     timing belt idler having disintegrated and the valve timing was out causing a little pop back through the inlet manifold to be heard at the air box. It was constant in that case.

    With the TD5 it is only momentary and I am wondering if it may just be a sticky lash adjuster because it goes away within seconds of start up.

    Any thoughts out there?

    Regards



    Mike
    Reply With Quote Reply With Quote
  2. 20th November 2014, 09:36 PM #2
    relatively normal
    relatively normal is offline Fossicker
    Join Date
    Dec 2013
    Location
    Kallaroo, WA
    Posts
    42
    Total Downloaded
    0
    Any more details available? Is it when cold or hot start up? Is it a 'pop' through the inlet/airbox like your last car?

    Could it be oil starvation to say a lash adjuster/lifter which makes a noise that when started up then gets an oil supply which quietens it down again?

    When was its last oil change? run an engine flush through it and new, maybe slightly thicker oil and filter.
    Reply With Quote Reply With Quote
  3. 21st November 2014, 06:46 PM #3
    nismine01's Avatar
    nismine01
    nismine01 is offline Master
    Join Date
    May 2012
    Location
    Adelaide Hills, SA
    Posts
    564
    Total Downloaded
    0
    I hope the noise is not "relatively normal".
    Only happens when cold, first start of the day, doesn't seem to matter the cycle of service.
    It does sound like air box for the noise, I am using     Penrite 5-30 and I will not change to a thicker oil, the only thing I can think of is lash adjuster 'bleed down', overnight.

    Mike
    Reply With Quote Reply With Quote
  4. 21st November 2014, 07:44 PM #4
    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
    You've got LPG enhancement fitted from memory. Your gas regulator may be allowing a small amount of LPG to dribble into the inlet manifold overnight. This will knock loudly for one revolution or so. Try turning the engine off at night after driving the last 5 minutes with the gas switched off.
    Reply With Quote Reply With Quote
« No reversing lights | Help Needed daily drive! - Advice TD5 - Clutch Pedal no resistance cant get reverse. »

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!