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Surging idle and hesitation at 60mph
- angryeric116
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19 Jun 2016 06:22 #731972
by angryeric116
1979 KZ 1000 LTD B3
in the process of restoring.
Weisco 1 to 10.25 pistons
unknown 4 into 1 , pod filters, #122.5 main jets, #15? Idle jets
Surging idle and hesitation at 60mph was created by angryeric116
Good morning fellow KZ riders.
I have a 79 kz1000 LTD B3 (43k miles) with what I belive are mikuni VM26SS carbs.
The bike has a 4-1 exhaust, UNI pods, a 1mm over bore with weisco high compression pistons(10.25-1).
#20 idle jet, 127.5 main jet, stock needle (5cn18?) with the clip on the lowest setting.
Idle mixture screw 1/2 turn out.
New spark plugs and the timing was just set using a multimeter.
So here is my problem, at idle, the bike will either barely stay running and sputter out and die, or it will race up to 3-4k rpm and sit there. I have new rubber carb mounts and have checked for vacuum leaks and can't find any.
At speed the bike runs fairly well, accept when I am trying to cruise around 60mph. I feel the bike lightly surging.
I have been dealing with this for a while now and am totally lost. Please help!
I have a 79 kz1000 LTD B3 (43k miles) with what I belive are mikuni VM26SS carbs.
The bike has a 4-1 exhaust, UNI pods, a 1mm over bore with weisco high compression pistons(10.25-1).
#20 idle jet, 127.5 main jet, stock needle (5cn18?) with the clip on the lowest setting.
Idle mixture screw 1/2 turn out.
New spark plugs and the timing was just set using a multimeter.
So here is my problem, at idle, the bike will either barely stay running and sputter out and die, or it will race up to 3-4k rpm and sit there. I have new rubber carb mounts and have checked for vacuum leaks and can't find any.
At speed the bike runs fairly well, accept when I am trying to cruise around 60mph. I feel the bike lightly surging.
I have been dealing with this for a while now and am totally lost. Please help!
1979 KZ 1000 LTD B3
in the process of restoring.
Weisco 1 to 10.25 pistons
unknown 4 into 1 , pod filters, #122.5 main jets, #15? Idle jets
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- daveo
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21 Jun 2016 05:51 #732217
by daveo
1982 KZ1100-A2
Replied by daveo on topic Surging idle and hesitation at 60mph
Looks like you have enriched the fuel mix a bit, based on your signature information. My hunch, it likely needs tweaking.
It never ends with these things. :lol:
It never ends with these things. :lol:
1982 KZ1100-A2
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- SWest
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- 10 22 2014
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21 Jun 2016 06:20 #732222
by SWest
Replied by SWest on topic Surging idle and hesitation at 60mph
Start with maintenance. Valves spark advance, etc.
Steve
Steve
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