Question about kawasaki Z 1000 SX Motorcycles

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77 kz 1000 police with 40k mi.was neglected for yrs. compression is close to 90 on all 4 cyl. have just rebuilt the carbs,put high tension leads on the coils after coils tested good at the dealer.electronic ignition on the mark.have also tried the slide needle in three different positions.the problem remaines.fires up and runs on the stand .well. but breaks down around 4k rpm on test run. like its fuel starved but when plugs are pulled they look fuel fouled???

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It would help if you knew why it stopped years ago, wether there was a problem or it was just parked and running fine.
You have probably tried some of these but
Put the needles back in the original place, as this couldnt have changed while the bike was sitting.
make sure it has a good standard aircleaner in it.
change the oil
has the exhaust been changed
does it blow smoke
are the fuel lines correct
does the vacumn fuel tap work correctly(flows on P, stops on ON or RES) only run the bike on ,ON or RES.
Do the carbs flood
Fit new plugs
check all valve clearances
There are also some resisters in the plug caps that can fail(this would not affect all cylnders)
It the battery good and the correct one for the bike.
Is the charging circuit working 12v at idle and rises to about 14v when its reved.

Posted on May 21, 2011


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