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Mikuni Jet Issue ?
- BIGKEVIN
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23 Jan 2013 20:48 #568857
by BIGKEVIN
1976 KZ900
2006 ZX6R
Mikuni Jet Issue ? was created by BIGKEVIN
I have set of 29 mm Mikuni carbs on my 1976 KZ900. I had stripped jet block and I think my brother or cousin put some liquid past on the main jet to see if it would hold it in the jet block. I have put a new jet block in and the started the bike and the pipe that the jet block was replaced in does not heat up like the other 3. I took the carbs apart and the little holes on the maint jet were clogged. I cleaned them out, but I think there might be more stuff in the jet itself. Would some of these little holes being clogged cause the bike to sound like it is not running on all 4 cyclinders and the pipe not to heat up like the other pipes ?
1976 KZ900
2006 ZX6R
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- timebomb33
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23 Jan 2013 21:06 #568859
by timebomb33
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
Replied by timebomb33 on topic Mikuni Jet Issue ?
definitly
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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23 Jan 2013 21:22 #568860
by BIGKEVIN
1976 KZ900
2006 ZX6R
Replied by BIGKEVIN on topic Mikuni Jet Issue ?
I will take the carbs back off tomorrow to check the main jet in carb #3. I might just swapped #3 and #4 main jet to see if the #4 pipe does what #3 is currently doing.
1976 KZ900
2006 ZX6R
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23 Jan 2013 21:42 #568864
by timebomb33
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
Replied by timebomb33 on topic Mikuni Jet Issue ?
its probably not blocking the main so much but it sounds to me like the pilot or slow speed jet or passage is probably plugged.
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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23 Jan 2013 21:45 #568866
by BIGKEVIN
1976 KZ900
2006 ZX6R
Replied by BIGKEVIN on topic Mikuni Jet Issue ?
If I am going to take the carbs off, I might was well go ahead and clean them
1976 KZ900
2006 ZX6R
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23 Jan 2013 22:15 #568874
by timebomb33
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
Replied by timebomb33 on topic Mikuni Jet Issue ?
i would
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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24 Jan 2013 20:12 #569036
by BIGKEVIN
1976 KZ900
2006 ZX6R
Replied by BIGKEVIN on topic Mikuni Jet Issue ?
I took the carbs back off today and clean them. I tried to bench sync them and noticed the I could not get the #3 carb to the same level as the other 3. I did some checking and found that when I replaced the jet block and throttle valve, I lost the spring in the part that bolts to the top of the throttle valve. I couldn't find it. Can these be purchased from somewhere ?
1976 KZ900
2006 ZX6R
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- Motor Head
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- FIX UP YOUR BIKE RIGHT AND CHEAP
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24 Jan 2013 22:16 #569070
by Motor Head
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
Replied by Motor Head on topic Mikuni Jet Issue ?
See if you can find the part in this diagram, and contact sudco.com to see if available.
www.sudco.com/Diagrams323728/expvm29.gif
www.sudco.com/Diagrams323728/expvm29.gif
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
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25 Jan 2013 20:27 #569270
by BIGKEVIN
1976 KZ900
2006 ZX6R
Replied by BIGKEVIN on topic Mikuni Jet Issue ?
I found the part but it is not longer available. If I take #65 out the top of all 4 carbs, will that allow me to take part #44(throttle shaft out)? I broke part #80, but have a spare one.
1976 KZ900
2006 ZX6R
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- BIGKEVIN
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28 Jan 2013 19:07 #569647
by BIGKEVIN
1976 KZ900
2006 ZX6R
Replied by BIGKEVIN on topic Mikuni Jet Issue ?
I finally go the carbs back together. I found the issue was with the gasket when I replaced the jet block. I didnt check the position of the gasket and it was covering the little hole in the bottom of the jet block, which was blocking fuel from spraying like it should into the throttle valve opening. I was able to bench sync the carbs. I am hoping to be able to do the running sync on them soon to hopefully get this running correctly.
1976 KZ900
2006 ZX6R
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- BIGKEVIN
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30 Jan 2013 20:27 #570000
by BIGKEVIN
1976 KZ900
2006 ZX6R
Replied by BIGKEVIN on topic Mikuni Jet Issue ?
I tried doing a running sync, but could not get them to sync. After disconnecting the sync tool and putting the rubber boots back on the carbs where the hose connects from the sync tool, I could not get the bike to idle below 2K. If I turned the idle adjustmetn screw out, the bike would die. It would only idle at 2k, nothing below it. I took the carbs back off the did the bench sync again, but still getting the same result. Anyone have idea what could cause this issue ?
1976 KZ900
2006 ZX6R
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30 Jan 2013 22:07 #570018
by Motor Head
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
Replied by Motor Head on topic Mikuni Jet Issue ?
The Screw for Pilot adjustment is an Air Screw. So turning out increases the Air to the Pilot Idle slow speed circuit. How far are they turned out from lightly seated? like 1/2-3/4 turn?
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
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