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78 kz1000 blowing gas out of #1 and #3 carbs
- kzed1k
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22 Apr 2015 23:58 #669236
by kzed1k
78 kz1000 blowing gas out of #1 and #3 carbs was created by kzed1k
Newer owner of a kz1000 a2, has pod filters 4into1 exhaust rebuilt carbs. Adjusted the valves to spec. .05 to .10 Pilots are 17.5 air screws turned out 1/8-1/4 turns, was idling great and running a little rough previous to adjusting valves. Now it will only idle with the choke on(very roughly) also is spitting gas out of carb #1 with burst of white smoke. #3 carb is spitting gas not quite as much as the #1 carb. Still getting spark on all cylinders. Almost seems as if the cylinder is running backwards.... Any input would be appreciated. I got this bike in non running condition, seems as if every time I adjust something it opens up a new can of worms....
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- SWest
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23 Apr 2015 07:31 #669265
by SWest
Replied by SWest on topic 78 kz1000 blowing gas out of #1 and #3 carbs
Recheck your valves. Should be .002-.004" Not jetted for pods or 4/1 exhaust. Start with #20 pilots and 125 mains.
Steve
Steve
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23 Apr 2015 09:22 #669277
by kzed1k
Replied by kzed1k on topic 78 kz1000 blowing gas out of #1 and #3 carbs
.002 - .004? Everywhere I have looked says I should be within .05 - .1, this motor isn't a newer 998cc it's the older 1015cc. Also it was idling previously. A little rich, but idling smooth
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- 650ed
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23 Apr 2015 10:02 #669283
by 650ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Replied by 650ed on topic 78 kz1000 blowing gas out of #1 and #3 carbs
When discussing valve clearances PLEASE say whether you're measurements are in INCHES or MILLIMETERS. Otherwise you will be talking apples and oranges with other posters. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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23 Apr 2015 10:15 #669288
by kzed1k
Replied by kzed1k on topic 78 kz1000 blowing gas out of #1 and #3 carbs
Sorry about that! I'm talking mm. An update on the carbs! I have the engine idling now (w/o the choke). I cranked up the idle, but I'm still getting fuel out of the intake side of them. When I open the throttle even more fuel spits from the carbs. Along with some white smoke which imo seems to be vaporized fuel. It's pushing out so much fuel its dripping from the pod filter!
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23 Apr 2015 12:39 #669303
by SWest
Replied by SWest on topic 78 kz1000 blowing gas out of #1 and #3 carbs
What year is the bike?
Steve
Steve
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23 Apr 2015 13:00 #669307
by kzed1k
Replied by kzed1k on topic 78 kz1000 blowing gas out of #1 and #3 carbs
1978 I'm starting to think I gotta get back into the valves.... Went back through the carbs and no issues what so ever.
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23 Apr 2015 13:37 #669310
by rhityx02
1977 KZ650 B1
Ty
Replied by rhityx02 on topic 78 kz1000 blowing gas out of #1 and #3 carbs
Hello,
You said you were inside the carbs...I did not see where you had mentioned anything about float levels in the carbs. If the fuel level in the carbs is incorrect that could cause some issues. Easy to check with the clear tube.
Good Luck,
Ty
You said you were inside the carbs...I did not see where you had mentioned anything about float levels in the carbs. If the fuel level in the carbs is incorrect that could cause some issues. Easy to check with the clear tube.
Good Luck,
Ty
1977 KZ650 B1
Ty
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23 Apr 2015 14:06 - 23 Apr 2015 14:07 #669316
by missionkz
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
Replied by missionkz on topic 78 kz1000 blowing gas out of #1 and #3 carbs
That much fuel?
I'm thinking too high float level too... or a couple main jets popped loose... etc.
Also, running a warmed up engine with the choke out is like pouring slightly metered fuel right into the intake port.
A super rich, blubbery mixture and rough running.
I'm thinking too high float level too... or a couple main jets popped loose... etc.
Also, running a warmed up engine with the choke out is like pouring slightly metered fuel right into the intake port.
A super rich, blubbery mixture and rough running.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
Last edit: 23 Apr 2015 14:07 by missionkz.
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23 Apr 2015 14:50 #669318
by kzed1k
Replied by kzed1k on topic 78 kz1000 blowing gas out of #1 and #3 carbs
Damn, I feel dumb saying this. Figured it out! The shims I swapped out were .2 mm bigger rather than .02 mm. I take valvr staying open on compression pushing air/fuel out the other direction.... On to the next thing! Thanks for all your replys!
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