76 kz900 29mm smoothbore issues... video included

Lmdgr34
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76 kz900 29mm smoothbore issues... video included

17 Mar 2016 10:51 - 17 Mar 2016 11:03

I have included a video to help describe the problem I'm having. I'm currently running a 120 main and 17.5 idle. If it give it any amount of gas too fast it just dies. It was somewhat better when I had a 25 idle jet. Do I keep going up on the idle jets? I had the carbs syncd and taken care of professionally a year and a half ago, but now that I've gotten the voltage problem taken care of this is now what it is doing. Thanks

1976 KZ900
29mm smoothbores, pod filters, 4-1 pipe....and a whole lot of daydreaming

Last edit: 17 Mar 2016 11:03 by Lmdgr34.

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strum
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 11:48

#715850

where are your air screws set at? try turning them in or out .
example if they are all set at a turn and a half out then go in a half turn to see if it changes.

Blairsville Ga.

1980 KZ1000 Shaft (sold and missed already)
2003 ZRX 1200R (sold)
2003 Concours ZG1000 (just purchased)

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Lmdgr34
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 12:08

#715854

if I remember correctly they are 3/4 turned out. I will double check that when I get home, thank you!

1976 KZ900
29mm smoothbores, pod filters, 4-1 pipe....and a whole lot of daydreaming

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SWest
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 15:58

#715885

Mikuni says to start at 3/4 turn then adjust for best idle 1/4 turn at a time waiting 10 seconds each time to let the carb catch up. Keep the idle around 900/1200. If it won't do that, sync the carbs then try again. When I'm done I'll raise the RPM's to around 2500 and listen for a miss. I can usually dial it out this way unless the pilot's are too big.
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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Lmdgr34
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 16:03

#715886

Steve,

I will have to give that a go tomorrow. I can get it to idle all day long. I just can't give it throttle too quickly or it dies.

Thanks,
Walt

1976 KZ900
29mm smoothbores, pod filters, 4-1 pipe....and a whole lot of daydreaming

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SWest
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 18:10

#715906

What clip position are your needles at? If you change them you'll HAVE to sync the carbs again.
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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Lmdgr34
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 18:12

#715907

they are in number 3

1976 KZ900
29mm smoothbores, pod filters, 4-1 pipe....and a whole lot of daydreaming

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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 18:16

#715911

Good, they are for fine tuning, elevation, etc.
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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baldy110
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 19:00

#715927

That jetting should work, check your timing advance unit.

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SWest
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 19:05

#715928

+1
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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spdygon
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 20:00 - 17 Mar 2016 20:00

#715940

I'm running 29mm on my kz900 as well.
4-1 exhaust and a air box
115 mains
15 pilots
1/2 turn out
Idle at around 1500rpm
Never been able to get them at 900-1200.

1982 GS1000sz Katana ( #15...17K Miles)
1982 GS1000sz Katana ( # 297....7100k Miles)
1978 Kz1000 Z1R. 10K Miles1
1978 kz1000 z1r 27k miles
1977 KZ 1000 A ( Project ) 54K Miles
1976 Kz900A4 (Red)21K miles
1976 Kz900A4 ( Red)7500 miles
1974 Z1 900 project

Last edit: 17 Mar 2016 20:00 by spdygon.

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Lmdgr34
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Re: 76 kz900 29mm smoothbore issues... video included

17 Mar 2016 20:02

#715943

I have a 4 -1 and pods
120 main
25 pilots(now)
3/4 turn out
it'll idle at 1k all day long but stalls if accelerates too hard. I'm going to try the advancer tomorrow.

1976 KZ900
29mm smoothbores, pod filters, 4-1 pipe....and a whole lot of daydreaming

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