Question about 2000 kawasaki ZX-9 R Ninja

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1999 Kawasaki ZX9R I have cleaned all carbs, checked all jets but I only have fuel coming out of 1 and 2. 3 and 4 get fuel at open throttle. all ports are open just like 1 and 2.

Pilot screw makes no difference either way. beating my head against the wall, help, please

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Hi, Michael sounds like you may have clogged transfer ports that external cleaning is not removing or there is a choke issue on 3&4 you may want to try a carb dip (very effective) and a carb sync. For more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
step by step ninja carburetor overhaul
How to bench sync motorcycle carbs
How to sync carbs on motorcycle
KAWASAKI ZX900 C1 Service Manual
OEM Parts for Kawasaki
Kawasaki Ninja Owners Manuals

Posted on Dec 29, 2016

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Posted on Jan 02, 2017

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Having fuel issues with my 1999 zx9r, i have already cleaned entire fuel system, bike will crank if i put my hands over air intake on carb, any suggestions?


Hi, Michael # 9 and 10 are jumping up and down waving a red flag and yelling "PICK ME" otherwise the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the links below. Good luck and have a nice day.
1999 Kawasaki ZX7R Ninja Won Start Need Your Help Fuel Economy Hypermiling...
My ZX9R wont start need help asap
Kawasaki Ninja ZX 9R Service Manual
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http://www.kawasaki-techinfo.net/showOM_nv.php?view_lang=EN&spec=EU&category=MC&book_no=99922-1933-03&lang_code=EN&code=&nickname=&modelyear=

Dec 07, 2016 | 2000 kawasaki ZX-9 R Ninja

1 Answer

My 2004 Vulcan Classic 1500 won't idle.


is the carb jetted? if so check to make sure it has the right size jets. too small of jets starve the engine of fuel, and too large flood it. also there should be 2 jets one main jet which controls the amount of fuel when at 1/4 throttle to fuel throttle and then there should be a second which would be the pilot jet that controls idle mixture (1/4 throttle and less) it's longer and thinner than the main jet with multiple holes for mixing air and fuel for idle. have them to make sure the jetting is correct. Also IF the engine had been bored you will need to use larger jets for the added volume in the cylinder chamber from the boring. aftermarket exhausts will also cause the engine to be rejetted but usually the sellers will have charts telling you what jets to run with the exhaust.

Nov 07, 2013 | 2004 kawasaki VN 1500 Vulcan Classic

1 Answer

HRU196 will start with "start ya *******" but will not continue to run on fuel


It is all in the carb. When you shoot ether into it it runs until it is burned off then the carb can't supply the engine with enough fuel to keep it running.

Jan 19, 2013 | Garden

1 Answer

What are the steps to take when removing a 1999 kawasaki ninja zx9r fuel pump from your bike and replacing it?


Drain fuel Remove lines replace if needed Remove bolts to pump with out braking Clean around where gasket goes Check for dirt particles Install new pump Hook up lines and get riding again

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1 Answer

99 kawasaki kx 125 2-stroke wont start or stay running, but when push started with wide open throttle it willl run and continue to run until throttle is let off or under 1/4 throttle. I've pulled the...


I would check the compression of the piston, the rings could be stuck and not have good compression. It should show 120 psi or more. Also can pull off the exhaust and look in the exhaust port to see the rings, piston, and cylinder walls. If the motor has a power valve make sure that is not gummed up or stuck. Mark C

Jun 02, 2011 | kawasaki KX 125 Motorcycles

1 Answer

Rebuilt carbs runs rich pops 1/4 throttle changed jets still have problems with popping but runs great when on throttle


check ur air/fuel mixture screw...turn all the way to the left and count the turns and let me know what u come up with example....1 1/4 turns 2 1/5 turns

Oct 19, 2010 | kawasaki Ex500d7 Ninja 500r Motorcycle...

1 Answer

How do I clean the carborator on my 1994 kawasaki ninja zx600-c


Carburator Theory and Tuning
carb_jet_usage1a.jpg

For some reason everyone seems to think tuning a carb is just real easy. Change a jet or two and boom, your there. Yeah, right ! There are quite literally millions and millions of jet combinations. A rough check on Bing carbs shows there are at least 13,860,000 different combinations of jets. If you are going to change carbs you'd better be prepared to spend some time and money on the job.
venturi1a.jpgmainjet_1a.jpgIf you look at a carburetor, you will notice a rather large hole going from one side to the other. This is called a Venturi. Air passes into the engine through this hole (Venturi). As the velocity of the air entering the carb (and then the engine) increases, it's pressure decreases, creating a low pressure or vacuum in the venturi. This vacuum moves around in the venturi, as the throttle is opened, and sucks gasoline through the different jets in the carb. The gas then mixes with the air going through the venturi. The way the jets are made causes the fuel to vaporize as it goes into the venturi. Where the jets are placed in the carb and where the jet's outlet is located in the venturi, determines what part of the throttle opening that jet controls. The idle jet system (comprised of pilot air jet, pilot fuel jet and pilot fuel screw) controls from 0% to about 25% of the throttle opening. The throttle valve controls 0% to 35% of the throttle opening. The needle jet and jet needle control from 15% to 80% of the throttle opening and the main jet controls 60% to 100%. This means that when you open the throttle about one eighth of the way open, all of the gas/air mixture going into your engine is controlled by the idle jet. As you can see, the different jets over lap the operating range of each other. That is, the jet needle starts to effect things before the effect of the idle jet ends. This is something to remember when working on carbs... everything is interconnected. Change one thing and it will effect other things.
OK, let's go over the different systems in the carb and see what they do.
  1. Fuel level. The fuel level is controlled by the fuel floats and the fuel float valve. The floats are hollow or made of something that will float on gasoline, such as cork. Part of the float presses against the float valve, sometimes called a needle and seat. Most times the part of the float that touches the float valve needle is bendable so you can adjust the level of the fuel in the floatbowel. All plastic floats are not adjustable. If this level is way too high, gas can leak out the carb overflow tube or into the engine. If fuel gets into the engine it will thin out the engine oil, ruining it's ability to lubricate. This will, sooner or later, blow up your engine ! If a full tank of gas in the evening turns into a half tank by morning, check your oil. If it's thin and smells like gas, change it and replace your float valve and/or check your fuel level. If the oil is OK, check under the overflow tube. If it's OK, then check where you are parking your bike 'cuse someone is walking away with your gas ! If your fuel level is just a bit high, the mixture will tend to be a bit rich. If it's low, the mixture will tend to be a bit lean. This is because a high level takes less vacuum to **** fuel into the engine and a low level takes more vacuum to do the same.


  2. Pilot or idle jet system. The idle jet controls the idle and on up to quarter throttle, give or take a bit. On some carbs, like Mikuni there is an air jet too. In conjunction with the idle jet there is an idle jet air screw. This screw leans or richens the fuel mixture for a smooth idle and on up to one quarter throttle. From the idle jet, there are little passages cast into the carb that lead to holes just in front of the throttle valve or plate. There can be just one hole or there can be several, depending on the carb design. They effect the mixture as long as the vacuum, in the venturi, is over them. As the throttle opens further, the vacuum moves to the needle jet and jet needle.
  3. The Throttle Valve. The big slide that opens and closes your throttle has a bevel angle cut in one side of the big round (can be flat, too) slide, toward the air cleaner. This angle comes in several sizes and helps control the fuel mixture from idle to about 35% open throttle.
  4. Needle Jet. This jet doesn't really even look like a jet, but it is ! It controls the fuel mixture from 15% to 60% open throttle. It sets in the center of the carb, right over the main jet.
  5. Jet Needle. This is the needle that rides in the throttle slide and goes into the needle jet. This needle controls the fuel mixture from 20% to 80% open throttle. It can come in many different sized tapers. Sometimes, one needle can have several tapers on it. The top end of the needle has grooves cut in it, usually five, and you can move the little clip on the end up or down to lean (down) or richen (up) the mixture. Most late model bikes have needles with only one groove cut in them. This is so you can't richen the mixture, thereby keeping the EPA happy.
  6. Main Jet. This jet controls the fuel mixture from 60% to 100% open throttle.

Apr 16, 2010 | 1994 kawasaki ZZR 600

1 Answer

I have not used my bike for 1 year. i have put new fuel in and charged the battery. she turns over but won't fire. Its a ZX9R c1 model.


Have you cleaned the carbs out? This is the #1 problem with bikes not starting after they sit for a while. Check your plugs as well as they may need changing too.

Mar 09, 2009 | 1999 kawasaki ZX-9R Ninja

1 Answer

Engine missfire


this sound like a crab deal for sure. when you cleaned the carbs did you take out the main and needle jets.if so carb cleaner my not work you will have to blow these jets out with with high pressure air and make sure you do all for carbs.

let me know how it gos

Jan 25, 2009 | 1997 kawasaki ZX-9R Ninja

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