kawasaki ZZR 400 - Recent Questions, Troubleshooting & Support

Hi and welcome to FixYa,

Initially, would suggest:

• a thorough cleanup job on the carbs;
• inspect, clean the rubber couplings from carbs to intake manifold;
• inspect tighten coupling clamps;
• ensure no vacuum leak when re-assembling;
• inspect, check, ensure air intake box seating to the carbs. Very important, there should be no air leak. All air must pass through the cleaner/filter;
• check/clean tank, including fuel valve control and built-in fuel filter;
• use PRIM instead of ON on the fuel valve control.

And the "carborator sleeves" will only slide up when there is sufficient vacuum (engine running) and the throttle is turned.

Good luck and Thank you for using FixYa. Happy Holidays.

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gday there your problem might be that your fuel pump might have stopped running ,these can sieze up running empty ,it may have a blown a fuse ,so that might be something to check ,if not it may be one for the dealer cheers pete

maybe fuel is too lean