20 Most Recent 2002 kawasaki ZZR 400 Questions & Answers

Since 160 kph is approximately 100 mph, you have exceeded the design parameters.
What is the engine rpm at that speed?
It is probably in excess of 14k rpm, which is beyond its tolerances.
However, if not intentional, the most likely cause of limited rpm range would be a clogged fuel filter or too low of an octane rating in the gas.

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Remove the carburetor slide from the throat of each carb. Now move the clip on the jet needle down one notch and put the carb back together. There is a notch on the side of the carb slide. When installing, it lines up with a pin inside the throat of the carb.

check resistance on your plug caps .

That is so dependant upon "Many Variables!!--If you were shaped like a bullet`weighed no more than 90Lbs & were laying under the paint, with quality high octane rated fuel, without brakes binding , & no accessories like Panniers & the Engine had at least 16,000K'ms Legit on the clock ,& at sea level ( Not High Altitude & on a "moist day" without Pillion Passenger ,& with Engine having Air Cleaners near new,& providing each Cylinder registered similar Compression Pressure , Perhaps 15 Psi & The Engine had correct Viscosity oil , & Drive train was not "MALADJUSTED " this macine , with small tailwind could be expected to top the Ton!---Now, IF YOU REALLY wanted to know just how good KAWASAKI'S earlier prducts were . locate >1974 S3 --2Cycle Triple Fire Breather & Could out accellerate & out run HONDA K1 750/4 --Reason>?"Power To Weight Ratio"--I hope that has been useful!--Whilst I 'm on that aspect, the Triple sounded to be screaming ( As if Ultra High RPM, Not so, it being Clarke cycle ( 2 Stroke , has "power pulse each time piston climbs to Top Dead Centre & the Four Strokes , Rev so much harder, yet do not quite sound so !!---The Mighty Vincent V Twin was an exception though >Guaranteed each Macine would reach 120 MPH 998 CC British, with very short pushrods, & alongside one at The Ton, years pasyt I noted His Tacho was only showing 4,200RPM!--O K -Cheers, 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?

Given the year of the bike there are a few things you will need to look over

*Check your break pads for even wear
*Change your break fluid
*Check your clutch lever (it should move about a millimeter before it actatually grabs the clutch)
*That bike has carborators. They need to be cleaned (could be part of problem 1 and 2)
*Check the fuel tank for rust. (there are treatment kits if it is rusted)
*your throttle cable should be lubed with cable lube(part of problem 1)/(when you pull the throttle cable then let go it should snap back closed)
*get higher octain fuel (this will help with problem 2)