help,carbs?

b.tracy79kz
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help,carbs?

22 May 2010 19:43

i have 79kz1000 ltd,v 4-1,open air filters,i just had new rings,cam chain,intake valves.i moved so i had to get bike from mechnic.it will run only with coke on,and idle with choke half way down.if i give it throttle it dies.also dyna ignition.dont know where to start..

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otakar
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Re: help,carbs?

22 May 2010 20:02

#369976

It sounds like the main jets are clogged or you have a MASSIVE vacuum leak. Make sure that the vacuum ports on the carbs are either connected or plugged.

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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b.tracy79kz
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Re: help,carbs?

22 May 2010 20:20

#369982

the vacuum ports are on back of carbs,only two (right).yes they are plugged.

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baldy110
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Re: help,carbs?

22 May 2010 22:30

#370011

Carbs are very dirty and all the little passages in the carb bodies are clogged up. Take the carbs apart and MAKE sure all passages and jets are clean and clear.

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Patton
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Re: help,carbs?

23 May 2010 03:24 - 23 May 2010 03:25

#370046

b.tracy79kz wrote:

the vacuum ports are on back of carbs,only two (right).yes they are plugged.

Each carb holder (between carb and engine) has a vacuum port (nipple) used to sync, which is capped (plugged) in normal running.

#3 carb has its own vacuum port (nipple) to afford vacuum to the petcock. A tube connects this port to a nipple on the petcock.

Two vent ports vent the four float bowls to atmosphere, thus preventing "vapor lock" inside float bowls.

Good Fortune.

1973 Z1
KZ900 LTD

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Last edit: 23 May 2010 03:25 by Patton.

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Patton
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Re: help,carbs?

23 May 2010 03:47 - 23 May 2010 03:48

#370047

[Click on image to enlarge view.]

1973 Z1
KZ900 LTD

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Last edit: 23 May 2010 03:48 by Patton.

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Patton
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Re: help,carbs?

23 May 2010 03:53

#370048

1973 Z1
KZ900 LTD

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Patton
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Re: help,carbs?

23 May 2010 03:54

#370049

1973 Z1
KZ900 LTD

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Patton
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Re: help,carbs?

23 May 2010 10:58 - 23 May 2010 10:59

#370175

1973 Z1
KZ900 LTD

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Last edit: 23 May 2010 10:59 by Patton.

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Patton
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Re: help,carbs?

23 May 2010 11:17

#370179

1979 KZ1000 carbs --- Hoses and connections

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1973 Z1
KZ900 LTD

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Patton
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Re: help,carbs?

23 May 2010 11:22

#370181

I believe this pic is of KZ650 carbs.

Note the vacuum to petcock nipple is on carb #2 in this example.

The "T" fitting where fuel line from petcock attaches to carbs is called a "fuel pipe."

Carbs with dual fuel lines from petcock are equipped with two fuel pipes.

Good Fortune!

[Click on image to enlarge view.]

1973 Z1
KZ900 LTD

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b.tracy79kz
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Re: help,carbs?

23 May 2010 18:39

#370329

you know i had bad day with in laws today.lots of stupid drama.but when it came time to kick back and enjoy what time i had left to day,and look to see if someone could help me with my bike problems,im bombarded with info and pics and a lot of know how,thank you all so much.ill look and see if some of your pics and hints will help.thank you.

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