Results 1 to 3 of 3
  1. #1
    Join Date
    Aug 2018
    Location
    NJ
    Posts
    48
    My Cars
    E38, b4 tdi

    4.6 engine knock?

    I'm potentially buying an 03 X5 with an "engine knock". The shop that has it doesn't seem to have diagnosed it. From my research, it looks like they have same issues as the 4.4 with the guides? Or is their issue the valve stem seals?

    I'm going to look at it tomorrow evening and want to do some research on the different noises that this specific engine makes and possible causes. I want to see if it is worth picking up to repair or if it just needs an engine or head

    I've done a bunch of the 4.4 guides, so I'm pretty familiar with that noise.

  2. #2
    Join Date
    Dec 2018
    Location
    USA
    Posts
    111
    My Cars
    2003 BMW 530i
    if the valve stem seals were bad i image it would be smoking a lot but i'm pretty sure the N62 has that problem more commonly. the timing chain tensioner could have went bad

  3. #3
    Join Date
    Jan 2007
    Location
    .
    Posts
    7,708
    My Cars
    .
    M62 doesn't have valve stem seal issues. And if it did, it wouldn't cause a knock.

    You better be prepared to replace the engine if you buy the car. Not saying you will absolutely have to, but if it's a rod knock, you will.
    ASE and BMW Master Certified Technician

Similar Threads

  1. Help, Engine Knocks.
    By songziou in forum 1996 - 2002 Z3 (E36/7, E36/8)
    Replies: 11
    Last Post: 08-04-2020, 03:05 PM
  2. Engine Knocking
    By nikv in forum 1991 - 1999 (E36)
    Replies: 18
    Last Post: 08-04-2020, 03:02 PM
  3. Engine Knocking
    By bimmin95m3 in forum 1992 - 1999 M3 (E36)
    Replies: 0
    Last Post: 08-06-2004, 02:40 PM
  4. Just to beak the silence... (about Engine Knock)
    By ///3oris in forum Forced Induction
    Replies: 10
    Last Post: 05-07-2003, 01:41 PM
  5. Engine Knocking?
    By b0rf in forum 1991 - 1999 (E36)
    Replies: 6
    Last Post: 12-07-2002, 05:04 PM

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
  •