shea1980 Posted September 3, 2020 Share Posted September 3, 2020 Hello guys,first post on this forum,Guys i have a kawasaki zzr 1997 which i just bought a week ago,I put in new fuel,new filter,new oil and filter and it strats no problem,The problem is really when driving,When i set off the bike doesnt run right when i give it the throttle it hesitate and no power for a second or 2 then i get full power,I have checked and i have spark to each plug,Also on tick over the bike idles at 1500 and jumps up to 2000 rpm and back down again does this the whole time,would anyone know what might the problem,Thanks all Quote Link to comment Share on other sites More sharing options...
XTreme Posted September 3, 2020 Share Posted September 3, 2020 I think [mention]fastbob[/mention] would be your best hope on this! Quote Link to comment Share on other sites More sharing options...
Guest Richzx6r Posted September 3, 2020 Share Posted September 3, 2020 The idling sounds like its hunting which could potentially point to an air leak between carb and cylinder ( carb rubbers can over time become hard and brittle and that leads them to cracking, for the power issue is the choke disengaged properly or is it stuck open very slightly which could cause this.Cheers Rich Quote Link to comment Share on other sites More sharing options...
WD-40 Posted September 3, 2020 Share Posted September 3, 2020 I agree with Richzx6r you might have an intake leak. Try spraying some wd40 around the intake rubbers when the bike is idling and listen for changes in the RPM. Quote Link to comment Share on other sites More sharing options...
fastbob Posted September 3, 2020 Share Posted September 3, 2020 First reaction , air leaks . Before you go pulling the carbs off there's one possibility . Have a look to see if any of the blanking plugs that cover the nozzles that you use to attach vacuum gauges have come off . There are usually three of them with the fourth carb activating the fuel tap . Quote Link to comment Share on other sites More sharing options...
TimR Posted September 4, 2020 Share Posted September 4, 2020 Sidestand switch partially sticking will give the above symptoms for when pulling off . quite common on a zzr600 . Lubricate and manipulate switch . Quote Link to comment Share on other sites More sharing options...
Bianco2564 Posted September 4, 2020 Share Posted September 4, 2020 Agree on air leaks and also check the carb balance, you would need a set of vacuum gauges to do this properly. Quote Link to comment Share on other sites More sharing options...
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