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Finally started, and running rough? 18 May 2023 09:33 #884847

  • Cmelton
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1984, KZ1000P, had set for some time, after I purchase the bike, which will be a daily rider, I changed the tires, brakes and multiple other parts, I have started the bike and it backfires, sputters, and  runs rough. an increase in throttle doesn't clean anything up. The spark plugs look good, they are new, wires are good. I am thinking that I have a fuel problem, hoses are new, and I have used Seafoam in the fuel to hopefully clean up the easy parts. The bike has the original air box, so I would need to remove it to get to the carbs. Sometimes the starter button works and at other times it doesn't, I have cleaned the switch with contact cleaner. Any advise would be appreciated.

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Finally started, and running rough? 18 May 2023 09:51 #884848

  • Nessism
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My advise is to rebuild the carburetors, and change all the various O-rings and gaskets.  Reuse all the brass parts, other than, maybe, the float valves.  

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Finally started, and running rough? 18 May 2023 15:15 #884873

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Pulled the carburetor and started the cleaning process. I found that the idle nets were completely plugged, but this was only after I removed the plugs that were covering the jets. So are the idle jets not used? Were the plugged intentionally? See photos 
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Finally started, and running rough? 18 May 2023 18:14 #884880

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The pilot jets get fuel via an internal passage connecting to the main jet. Without the plug over the pilot passage, they won't draw fuel.

You should change all the various O-rings while you are cleaning the carbs.  Those O-rings on the pilot plug are flat as a pancake.  Based on that, and experience, I suspect others are same.

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Finally started, and running rough? 21 May 2023 16:17 #885052

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Well, carbs cleaned, kitted and installed. Nasty airbox boots installed, fuel turned on. No fire *(^%*#$@!@+. It was firing when I removed the carbs? Now the hunt is on again. 

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Finally started, and running rough? 28 May 2023 11:05 #885334

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Well my KZ1000P is alive and running. I am very happy but gas mileage is horrible. I am reading other post to get the low down on how to tune for a decent mileage.   

55mph=3000rpm
80mph=4000rpm

two gallons burned in 30 miles?

I don’t know if there is a normal range or miles per gallon. Any advise.
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Finally started, and running rough? 28 May 2023 11:32 #885336

  • Wookie58
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I would expect it to be about half of what you are using (30 mpg ish)

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