Fuel leak from air filter

  • Fox
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Fuel leak from air filter

24 Jul 2016 16:37
#736080
Hello all,

Big problem!
I pass all my day to clean carburetors, and finally when i test my kz she have fuel leaking from the 2 holes of the oem air box.
I think it's the floats that doesn't close anymore... What do you think?

Please help :)
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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  • TexasKZ
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Re: Fuel leak from air filter

24 Jul 2016 17:16 - 24 Jul 2016 17:17
#736082
Yes. The fuel petcock is probably leaking as well.

Have you checked the fuel level in the carbs using the clear tube method?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
Last edit: 24 Jul 2016 17:17 by TexasKZ.

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  • Fox
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Re: Fuel leak from air filter

24 Jul 2016 17:25
#736083
Hello,

Thank you for your reply :)

What's the clear tube method?
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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  • TexasKZ
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Re: Fuel leak from air filter

24 Jul 2016 17:40
#736087
From the KZR file base
www.kzrider.com/jdownloads/General/Gener...clear_tube_combo.jpg

Depending on which carbs you have, you may also have cracked overflow tubes.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
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  • TexasKZ
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Re: Fuel leak from air filter

24 Jul 2016 17:42
#736088
You really should get a genuine Kawasaki Factory Service Manual for your specific model and year.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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  • Fox
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Re: Fuel leak from air filter

24 Jul 2016 18:05
#736097
I think i have learn in a wrong tutorial for me.

The kz1000 ltp 78 b2 should have a vm28 carb isn't it?

I place my floats to 22mm and not 16mm ... www.mikuni.com/pdf/vmmanual.pdf

I'm going to work on it now. Would be back in 1 hour with my carbs to make modifications.

Any help or tutorial will be really appreciade when i will back on my computer :)
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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  • Fox
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Re: Fuel leak from air filter

24 Jul 2016 20:17
#736116
no.... seems to be impossible to put it at 16mm... i don't understand.
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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  • SWest
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Re: Fuel leak from air filter

24 Jul 2016 20:20
#736117
Clear tube test ids the only way to get them right. Don't bend the tangs on too much angle.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Fuel leak from air filter

24 Jul 2016 20:23
#736120
Yep, i will try this :)
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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Re: Fuel leak from air filter

24 Jul 2016 20:29
#736124
The float measurement will get them close, but the clear tube method is the only way to get them perfect. If they were set at 22 rather than 16, then the fuel level should too low and not the cause of the overflow.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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Re: Fuel leak from air filter

24 Jul 2016 20:57
#736126
Any ideas on what can cause the overflow?
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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  • LineArtist
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Re: Fuel leak from air filter

24 Jul 2016 21:49
#736129
If you have a vacuum petcock the diaphragm is possibly torn allowing more gas to flow into the carbs (and out). To check, disconnect and remove the air hose from the petcock and smell/inspect it for traces of gasoline.

Check your float bowls first using the clear tube test (as mentioned)
Check all fuel lines for leaks

I don't understand what is leaking inside your airbox???
'79 KZ650B3 (stock)
'79 KZ650B3 (parts bike)
'06 HD 883R

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