kz 1000 carb help

  • smokymountainvintage
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kz 1000 carb help

19 Feb 2012 18:39
#505118
I just bought a 78 kz1000a2 which is very low milage (4700) and looks great but runs very poorly. I removed the float bowls and three of four of the pilot jets where clogged. Looks like it has had new kits put in it at some point because all the brass parts are very shiney and the gaskets are nice. Now when I turn the fuel on it fills the #2 cylinder full of fuel. You try to start it and it will not turn over til you take out the plug and it blows fuel everywhere. Any help would be appreciated.

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  • Patton
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Re: kz 1000 carb help

19 Feb 2012 18:56
#505121
smokymountainvintage wrote: I just bought a 78 kz1000a2 which is very low milage (4700) and looks great but runs very poorly. I removed the float bowls and three of four of the pilot jets where clogged. Looks like it has had new kits put in it at some point because all the brass parts are very shiney and the gaskets are nice. Now when I turn the fuel on it fills the #2 cylinder full of fuel. You try to start it and it will not turn over til you take out the plug and it blows fuel everywhere. Any help would be appreciated.
Excess fuel is for whatever reason getting past the float valve, and the overflow circuit is clogged and failing to allow the excess fuel to escape as it's supposed to (from the overflow nipples exiting from bottom of the float bowl).

The excess fuel -- which can't escape as it's supposed to via the overflow circuit -- rises up into the carb throat and flows both ways, rearward toward the air intake, and forward through the intake port and into the combustion chamber.

Good Fortune! :)
1973 Z1
KZ900 LTD

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  • mark1122
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Re: kz 1000 carb help

19 Feb 2012 18:58
#505123
may be a good idea to have the carbs sonic cleaned. then u know where u r at.
if the pilots were pluged, the passages in the carb may be as well.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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Re: kz 1000 carb help

19 Feb 2012 18:59
#505124
1973 Z1
KZ900 LTD

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