Author Topic: What Happens With a Stuck Timing Chain Tensionser?  (Read 2281 times)

ClayW

  • Full Member
  • ***
  • Thank You
  • -Receive: 2
  • Posts: 132
    • View Profile
What Happens With a Stuck Timing Chain Tensionser?
« on: April 22, 2013, 11:24:41 AM »
I disassembled my poorly running M42 and found that the timing chain tensioner was stuck. I had to force it out from the inside with a screwdriver. As I understand it, it should slide freely, right?

What problems might this have caused?
Project Blogs:

1967 BMW 1600 w/M42: www.tx02.blogspot.com

1991 BMW 325i DD: http://www.r3vlimited.com/board/showthread.php?t=266953

colin86325

  • Hero Member
  • *****
  • Thank You
  • -Receive: 15
  • Posts: 764
    • View Profile
Re: What Happens With a Stuck Timing Chain Tensionser?
« Reply #1 on: April 23, 2013, 11:06:53 AM »
Weird.  Yes, it should have extended on its own once it received enough oil pressure.  It was probably either faulty or somehow installed such that it did not get enough oil pressure (??).

Check your cam timing to make sure the chain hasn't jumped timing.

ClayW

  • Full Member
  • ***
  • Thank You
  • -Receive: 2
  • Posts: 132
    • View Profile
Re: What Happens With a Stuck Timing Chain Tensionser?
« Reply #2 on: April 23, 2013, 01:11:30 PM »
Weird.  Yes, it should have extended on its own once it received enough oil pressure.  It was probably either faulty or somehow installed such that it did not get enough oil pressure (??).

Check your cam timing to make sure the chain hasn't jumped timing.

I discovered this as I disassembled the engine. I'm trying to figure out why it was overheating. Anyway, a new engine is almost ready to go in.
Project Blogs:

1967 BMW 1600 w/M42: www.tx02.blogspot.com

1991 BMW 325i DD: http://www.r3vlimited.com/board/showthread.php?t=266953