I have a 2000 zx12 left to me from my family member passing away. the bike set for 6 years i replaced the fuel pump and gas tank the old tank still had old gas. the bike started and ran fine. one day i finally got to really ride it and ride it kinda fast but i went home and the next day i was told to put fuel injector cleaner in it and it had a problem starting.but finally did.the next night it wouldn't start but it turns over strong but won't start. it will sputter every once in a while but not start. what does this seem like it could be

SOURCE: 93 gsxr wont start and occasionally dies

you could possibly have a bad fuel petcock they sometimes work there way out and cause fuel cut off to half the carburetors. The vent tube on tob of the tank can also become blocked. You can check it buy sucking on the tube and making sure you can **** air out of it. You may or may not have inline filters under the tank. If it's a 93 there is no fuel pump.

SOURCE: idle problems with my kawi zx-10r 05

Hi there!

make sure your carburetors are clean. I guess you've done that already. I had this problem once and i drained the carburetor fuel reservoir and found out that it had water mixed in it. Pull on the chock and ram the throttle several times to get rid of any water stuck on the jets. Also, clean the plugs, and let the chamber dry for a while like 30 minutes... replace the spark plugs.

let me know if this helps
-levibit

SOURCE: engine runs, but it will not rev up past 2000-3000 rpms,

are you turning the choke off after its warmed up? most will not run with the choke on and warmed up.

also try running it with the gas cap open to see if you have a vent issue in your tank. if air can't get in, then gas can't flow.

if not a choke or vent issue, then try this. turn the petcock off and then disconnect the fuel lines one at a time going into the carb. start with carb fuel line #1 disconnected (and the rest connected) and in a coffee can, turn petcock on and ignition too. fuel pump should come on momentarily and inject some fuel. see how the quantity looks. reconnect the line to carb #1 and repeat for carbs #2 - #4. your looking for a decrease in fuel to a couple of cylinders.

if all looks fine, i would then focus on the carb floats & jets. have the carbs been off for a good cleaning lately? modern fuel breaks down quickly and could cause a gumming condition in the carbs. spraying the sea foam or carb cleaner into the carbs is bypassing the everything in the carb bowl (but it means the spark plugs are ok) so there could be an obstruction. i would look there first.

if uncomfortable removing the bank of carbs, you can try a quick fix first. with the petcock closed, open the drain screws of each carb and let the gas drain out. go and buy some yamaha carb cleaner (liquid in a black bottle) at a yamaha motorcycle dealer. mix it in a separate container with gas as recommended. close the drain screws on each carb. pour the mixture into each fuel line feeding the carb and let it sit overnight. DO NOT POUR THIS MIXTURE INTO YOUR TANK. its not a fuel additive, but a cleaner that will not harm orings or gaskets, but it will not ignite with a spark plug. open the drain screws the next morning and let the mixture pour out. reconnect the fuel lines to the carbs and test drive it.

if that didn't work, then removing the carbs for a good cleaning is my next step. good luck.

SOURCE: carburator problem

Hi and welcome to FixYa,

Offhand would suggest a rebuilt/clean of the carbs. A temporary workaround would be to switch off the fuel petcock, remove the fuel hose, partially drain the carbs and spray into the fuel hose (going into the carbs) injector/carb cleaner. Reinstall fuel hose, turn on fuel. Remove the air filter and start the bike. After warmup, rev while spraying injector/carb cleaner into the opening where the air filter should be. Get a hard paper/board (such as a folder) cut to a size bigger than the air filter but would fit inside the opening of the airbox. Rev/pump the bike slowly building the RPM at about 4~5K suddenly cover the opening (with the board) to fully choke the carbs while maintaining throttle. Before the engine dies, remove the cover. Spray again while revving. Repeat choking/spraying several times. The idea is for the vaccum to draw the clog/blockages.

Pls post back result(s). Good luck and Thank you for using FixYa.

SOURCE: Bike dies if rpm rise above 4 or 5

Hi!

That clicking noise comes from the start-relay, that tells your battery is out of power or almost out of power, when the battery isent giving enough of power the start-relay clicks. Recharge the battery,
Now for that other thing, that your bike dies around 4-5 rpm, that can be caused by many things but i think that you will find the solution in the carbs. You told us that the bike has been standing outside for 3 years, that tells me that you carbs is in need of cleaning. Inside the carbs is a lot of smal parts that opens and closes when you hit the gas, after so long time outside some part dosent work as they should, therefore when you hit the 4-5rpm the bike dosent get the right mix of fuel and air since the carbs harsh and the bike dies.
Take the bike to a repaire shop and let them clean and calibrate the carbs and your problem will be solved.

Good luck
Nic