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1990 zx600 runs much better with fuel off!

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  #1  
Old 05-25-2007, 12:58 AM
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Default 1990 zx600 runs much better with fuel off!

I recently rebuild my carbs and have had problems ever since. I needed a new regulator/rectifier and someone sugjested that I rebuild my petcock but all I did was take it apart and clean it. The bike ran fine for about a week then it just died on me when I went to start it today and it ran ****ty like it was only running on 3 cylinders when I stopped I noticed that the overflow for cylinders 3 and 4 was pouring fuel out. when I turn the fuel off it runs great then if I turn it on it will bog down after A min. If anyone have any insight I would really apreicate it. Thanks
 
  #2  
Old 05-25-2007, 01:40 AM
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Default RE: 1990 zx600 runs much better with fuel off!

Either your carb floats are not adjusted properly, or the float needles are worn out, allowing thefuel bowls to over-flow.
 
  #3  
Old 05-25-2007, 05:22 AM
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Default RE: 1990 zx600 runs much better with fuel off!

+1^ check into the floats.
 
  #4  
Old 05-25-2007, 01:43 PM
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Default RE: 1990 zx600 runs much better with fuel off!

Thanks Ill check it tonight. I let you know how it goes.
 
  #5  
Old 05-29-2007, 05:33 PM
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Default RE: 1990 zx600 runs much better with fuel off!

Thanks guys it was the float. all better now other than its a little hesitant at low rpms and somewhat jerky.
 
  #6  
Old 05-29-2007, 07:18 PM
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Default RE: 1990 zx600 runs much better with fuel off!

robmac make sure the floats are at the right level that might get rid of the hesatation in the lower rpms.
 
  #7  
Old 05-29-2007, 07:18 PM
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Default RE: 1990 zx600 runs much better with fuel off!

robmac make sure the floats are at the right level that might get rid of the hesatation in the lower rpms.
 
  #8  
Old 05-30-2007, 12:03 AM
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Default RE: 1990 zx600 runs much better with fuel off!

Good to hear! 1+ on checking the fuel bowllevels if you haven't already.
 
  #9  
Old 05-30-2007, 08:51 PM
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Default RE: 1990 zx600 runs much better with fuel off!

I havent but I will this weekend when I get time to take her apart. Thanks again for the input guys. Ill keep you posted.
 
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