Got a yzf750R changed fuel pump cleaned carbs and still won't fire up

SOURCE: cbr 600 f3 will not start

wow, 7 years without use! try to check if the fuel pump motor is still working... also check the fuel lines if its clogged.. I hope you get your bike up and running again... feel that adrenaline rush when going 100+mph.. hehehe.. have a good one bro...

SOURCE: yamaha yzf750r missfire rough running

Try taking air cleaner off before going to far, Blow carbies with air, dont use full force I done this to mine and it fixed it you may be lucky dirty jets.

SOURCE: 49cc Pocket Bike Carburetor Won't Draw Fuel

first off, are you getting fuel to bulb? if not are you sure the lines aren't on carb backwards. if you are getting fuel to bulb and won't run then here's what i'de check. how's the compression, may not be making enough vacuum to draw fuel, have you removed the mixture screws and blown out passages, there is a little sreen under diaghram in some of those little carbs that gets clogged, carb base gasket?

SOURCE: 95 suzuki katana won't start however when sprayed

My guess is u have ur lines mixed up. Two fuel lines from carbs to opposite sides of petcock and vacuum line from right side of carbs goes to backside of petcock. All of the other hookups are breathers and vents.

SOURCE: Ryobi 410 mini tiller w/Walbro WT149A primer bulb won't prime. New bulb, new fuel lines, hooked up right, carb cleaned. Been sitting for several years.Runs when fuel is pumped into the fuel inlet.

hello sir, my machine will only start when pumping primmer bulb or squirting fluid in the carburetor than stops. the fuel line has broken off, in most small carburetors this is a ongoing problem.old fuel will crystallize when left in tank for a long time.plugging up ports, fuel lines, small screen in carburetor.fuel lines will dissolve clogging carb.this is why it will run when the choke is on creating a vacuum to where there is fuel forced in the carb to rum,also the gas will evaporate leaving the oil behind clogging up carb.the thing to do is remove carb. and clean out,replacing gaskets or fuel line if necessary.use carb cleaner to clean out carb.make sure to make note where fuel line go.the fuel filter broke off of fuel line letting debris get in carb plugging it up.the muffler is known to clog up a lot on these machines where they want run. the compression should be 60 to 120 lbs any thing below 60 is junk. when adjusting the carb screws turn in all the way than turnout 1 1/4 turns turn in slow until machine runs also you need to check for spark by removing plug and grounding against engine to check spark, ok.a new spark plug would be a good ideal too , if you are going to make these repairs use new fuel line and filter,hope this helps,any comments welcome,thank you, !!