Carbs

[Trad 1]

Hi , can somebody tell me where the 2 vacuumed pipes run to??? When I got the bike there was a rubber bung on 1 and nothing on the other , do these vacuumed outlets do anything???? Thanks

[warren3200gt]

If the pipes I think you talking about they are not vacuum pipes they are breathers. allows empty carb air to escape when you turn on the tap. On a 650 they are routed either back ino the air box or between frame and arm pivot with the overflow pipes.

[Philippe]

Hi Trad1
what bike are you talking about?
Z1 ? Z900A4? Z1000? Z650? ...
Give us correct information to get correct advice please.
GrtZ
Philippe

[warren3200gt]

Philippe, its a 900 a4. He's quite close to me geographically so kinda remembered his intro post.

[Trad 1]

KZ 900. 1976

[kev edwards]

Depending on which model carbs you have one of the stubbs may be a vacuum take off for a vac operated petrol tap, for non vac taps they are just breathers, the bung makes me think you have later A2 carbs.

[PAULJAC47]

We need a pic to see what carbs these are!

[Trad 1]

Thanks everyone,,, I’ll try and put a pic on here,

[kev edwards]

They look like 28mm, does the bike run fine with the stubbs open, if so they are breathers, just stick your finger over the stubbs when running to check for vacuum.

[Philippe]

Hi Trad1

the two pipes serve to let air get out of the float chamber. You can keep them short and bend them so they end after the carbs but make sure they point downwards in order to prevent water getting in. You can allso keep them long and then you guide them to the airfilterbox lid ( I don't think you still have one according to the pics) and let them end under the seat.
Anyway don't let them get clogged or the air won't get out of the float chambers.
GrtZ
Philippe

[warren3200gt]

Also get some decent tap to carb fuel tubing. That clear stuff goes hard and brittlle. Making it difficult to take on and off and will splitor break.

[Trad 1]

Thanks for all reply’s,,, much appreciated