Can anyone identify this vacuum tube.

  • metrorollah
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Can anyone identify this vacuum tube.

06 Jan 2011 17:44 - 06 Jan 2011 17:48
#420422
Hi,
I have one of these tubes (RED) on the #2 and the #4 Mikuni carburettors of my 1979 KZ650SR. Clearly the front tube (GREEN) is for the petcock vacuum. What is the other for? and why on the #4 carb too? (FYI, California model)
750

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Last edit: 06 Jan 2011 17:48 by metrorollah.

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  • OKC_Kent
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Re: Can anyone identify this vacuum tube.

06 Jan 2011 18:11
#420427
The red arrow tube and the same one on number 4 are the vent's for the carbs. Just hook up some tubing to them and run them up around the airbox opening. Do not plug them.
Oklahoma City, OK
78 KZ650 B2 82,000+ miles

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  • metrorollah
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Re: Can anyone identify this vacuum tube.

06 Jan 2011 18:28
#420433
I have never heard of vents for carbs. What do they vent? Vapor?

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  • gane
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Re: Can anyone identify this vacuum tube.

06 Jan 2011 18:52
#420439
Actually, they insure that float chamber is at atmospheric presure. G
[img][/img] 1977 KZ1000A1

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Re: Can anyone identify this vacuum tube.

06 Jan 2011 18:53 - 06 Jan 2011 19:38
#420440
:-/
Last edit: 06 Jan 2011 19:38 by metrorollah. Reason: fun

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Re: Can anyone identify this vacuum tube.

06 Jan 2011 18:56
#420441
Fancy way of saying float bowl vent. Makes sense that it needs to be at atmospheric pressure though.

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Re: Can anyone identify this vacuum tube.

06 Jan 2011 20:12
#420452
Thanks fellahs!

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