« previous next »
Pages: [1]   Go Down

Author Topic: Cylinder Head Cover - Breather Tube - Leak?  (Read 1146 times)

0 Members and 1 Guest are viewing this topic.

Offline Chachi

  • Hot Shot
  • ***
  • Posts: 713
Cylinder Head Cover - Breather Tube - Leak?
« on: October 30, 2011, 10:19:34 AM »
If I am reading my parts diagram correctly (Cylinder Head Cover), my Tube C Breather seems to be the source of a leak which generates a bit of smoke. It drains in front of rear wheel.

What does that tube drain? Is it normal? Potential solutions if it is a problem? This is on CB500.
Logged
73 CB750 K3
72 CB500 K1 - Sold
75 MR50 Elsinore K1

Offline Deltarider

  • Really Old Timer ...
  • *******
  • Posts: 8,542
  • I'm back
Re: Cylinder Head Cover - Breather Tube - Leak?
« Reply #1 on: October 30, 2011, 11:21:20 AM »
A bit of smoke is normal. Mostly water with some drops of oil.
Logged
CB500K2-ED Excel black
"There is enough for everyone's need but not enough for anybody's greed."

Offline Chachi

  • Hot Shot
  • ***
  • Posts: 713
Re: Cylinder Head Cover - Breather Tube - Leak?
« Reply #2 on: October 30, 2011, 11:39:41 AM »
Thanks.
Logged
73 CB750 K3
72 CB500 K1 - Sold
75 MR50 Elsinore K1

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,802
Re: Cylinder Head Cover - Breather Tube - Leak?
« Reply #3 on: October 30, 2011, 12:24:02 PM »
It's a crankcase vent.
It vents out piston ring blow by gasses and any pressure that creates, oil vapors, oil droplets, water vapors, and water condensate.

Newer bikes route all these back to the engine combustion chamber to be burned before releasing it to the lungs of mammals on this earth.

Cheers,
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Chachi

  • Hot Shot
  • ***
  • Posts: 713
Re: Cylinder Head Cover - Breather Tube - Leak?
« Reply #4 on: October 30, 2011, 12:29:45 PM »
Ha. Thanks.
Logged
73 CB750 K3
72 CB500 K1 - Sold
75 MR50 Elsinore K1
Pages: [1]   Go Up
« previous next »