20 Most Recent 1993 kawasaki ZZR 400 Questions & Answers

Generally all carbs from the factory have a mixture screw setting of between 1 1/4 and 1 1/2 turn out from being bottomed out. Then I would check the sync on the carbs next. If that doesn't cure it then you can call a parts dept and ask them what the factory jets are and verify that you have those installed. Unless you have a pipe or full exhaust they should be factory. If you have aftermarket exhaust of slip on then you might have to dig a little deeper and see if it has factory parts or a jet kit. I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_5bac37c3cb991fdb

check wiring to egnition check spark plugs if not that dont no what else

check the spark plug , if its dirty then clean it and gap it , if it doesnt turn over then , replace it then try again

Suspect worn needle valve & seat assembly !---Quick test , with care>Whilst riding on open road &holding throttle at set position, switch off fuel supply & note IF engine speeds up, IMMEDIATELY Back off throttle, watch rear vision mirrors for traffic behind & switch on fuel supply!---If that small test indicates Carburettor area of further examination, UNLESS YOU ARE QUALIFIED the needle valves need to be examined byTrained eye!-(Especially wear on sides of needle valve & ALSO, check "floats"Stay Upright Des

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

It is better to replace it with a performance version. K&N filters sells them on-line and you will be very pleased with the results. Changing your spark plugs to Denso Iridiums will also provide a little power boost (HP up) and improve fuel economy.

Hello and welcome to Fixya, It can be done, one of our competitor's race teams did it with some pretty drastic modification's. Its definitely a challenge.But seen it accomplished. I could give you there info, they may be able to give you some hints. Let me know, Thanks for using Fixya

does the engine turn over but not start or does it not turn over at all

you should have a header tank some where on the bike you fill this to add water to the rad.

If you mean the bottom of the tank then one goes to the carb and one is just a breather/overflow that gets ran down out of the way and doesn't connect to anything. If you are talking about the carbs then one goes to tank and one goes to the vacuum

Fuel system is clogged,..GARAUNTEED!! Take off the fuel tank,to get to the swirl bowl. Inside the swirl bowl,you will find a fuel filter,which SHOULD be completely white,and most likely,its not! Get a new filter and install it. While you have the tank off,disconnect the injector line,and remove and clean the injector with carb cleaner and pressured air.Put everything back together,and then add an INLINE FILTER to the feed line on the fuel pump which is located on the left hand side,running from the shut off valve,to the fuel pump. These are awesome quads,but the fuel injection system is a pain in the a$$.Good Luck!

They don't go too high on their own, someone has to have maladjusted them
It could be a leaking float, that will amount to the same fault. Or, it might be the choke is stuck on.

Are you out of oil?