Announcement

Collapse
No announcement yet.

carb, air cut off valve

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    carb, air cut off valve

    Hi All, I know there is a lot about carbs on this site, what does the air cut off valve do? I have had a look on the internet regards this but there is not a lot there. I have had a look at how constant velocity carbs work on the internet and I understand this but I have only seen simple CV carbs shown, with no air cut off valve.
    The air cut off valve has a strong spring, there must be a strong force to open or close this valve with such a small diaphram
    It would be great if I could understand this, Ian

    #2
    higher vacuum during downshifts pulls a valve open,letting in richer air/fuel mixture to prevent lean backfires...... or something like that.

    they almost never go bad or need replacement.
    Last edited by squirrelman; 4 Weeks Ago.
    "It's only getting worse."


    MY rides: '97 VFR750, '90 Red Hawk, '88 Blue/Black Hawk, '86 RWB VFR700 (3), '86 Yamaha Radian, '90 VTR250, '89 VTR250 (2), '73 CB125, '66 Yamaha YL-1

    Sold: '86 FJ1200, '92 ZX-7, '90 Radian, '73 CB750, '89 all-white Hawk, '88 blue Hawk, '86 FZ600, '86 Yam Fazer 700 , '89 VTR250, '87 VFR700F2, '86 VFR700F.

    Comment


      #3
      Originally Posted by squirrelman View Post
      higher vacuum during downshifts pulls a valve open,letting in richer air/fuel mixture to prevent lean backfires...... or something like that.

      they almost never go bad or need replacement.
      Thanks for that squirrelman, that's good to know, I have a Honda ntv manual which is the same engine and it does not give a season for the air cut off valve.

      Comment

      Working...
      X