Will not start!!! getting upset!
You guys are getting ahead of yourselves, here.
Check it:
Your fuel pump doesn't kick in right away. It only starts up once the stator is rolling. That's why you didn't get any gas out of the pump when you tried starting the bike. take that hose off again, and spray some starter fluid into the intake while cranking the bike. The bike should catch and start to sputter. If you see the pump kick in THEN, you're all good pump-wise. If it still does nothing, I bet you've got a fried relay. The pump is never being turned on at all, and that's your problem. Relays fry on that bike a lot.
If that's all good, and you're sure mice haven't built a nest in your airbox or exhaust pipe (srsly, saw it twice this year already), then yeah, I'm gonna lean towards your slow jets being gummed up.
I'm just doubting this because you only let the bike sit for 3 weeks, and with all the thinners and detergents and preservatives and crap they put in modern gas, it can sit for like 2 years before it starts to gel. But, that's the next step. Getting the carbs out is a 30-minute gig, once you know how. Opening the bowls is 60 seconds. The slow jets are the tiny ones on the bottom of the bowls, with the micrscopic holes that are so small that gas molecules have to pass through them in single-file.
Either way, take all 8 jets out. Be VERY careful how much pressure you put on them, as they can crack. SUBMERGE them all in carb cleaner overnight, then spray the holes out with carb cleaner and then pressurized air. You can make sure all the holes are clear by looking through them at a bright light.
Word.
Check it:
Your fuel pump doesn't kick in right away. It only starts up once the stator is rolling. That's why you didn't get any gas out of the pump when you tried starting the bike. take that hose off again, and spray some starter fluid into the intake while cranking the bike. The bike should catch and start to sputter. If you see the pump kick in THEN, you're all good pump-wise. If it still does nothing, I bet you've got a fried relay. The pump is never being turned on at all, and that's your problem. Relays fry on that bike a lot.
If that's all good, and you're sure mice haven't built a nest in your airbox or exhaust pipe (srsly, saw it twice this year already), then yeah, I'm gonna lean towards your slow jets being gummed up.
I'm just doubting this because you only let the bike sit for 3 weeks, and with all the thinners and detergents and preservatives and crap they put in modern gas, it can sit for like 2 years before it starts to gel. But, that's the next step. Getting the carbs out is a 30-minute gig, once you know how. Opening the bowls is 60 seconds. The slow jets are the tiny ones on the bottom of the bowls, with the micrscopic holes that are so small that gas molecules have to pass through them in single-file.
Either way, take all 8 jets out. Be VERY careful how much pressure you put on them, as they can crack. SUBMERGE them all in carb cleaner overnight, then spray the holes out with carb cleaner and then pressurized air. You can make sure all the holes are clear by looking through them at a bright light.
Word.
I'm gonna have an extra hand tomorrow night, so I will try all that then. Thanks for all the input guys!! I had a problem with it last year not starting, but that was due to a kinked breather hose under the tank. I will try the starter fluid into the pump and see what happens before I try to pull the carbs and clean them. A mechanic at work said that it was kinda weird for it to just stop and all the jets clog at once. He said it should have sputtered first and gave me a sign... Where is the fuel cutoff relay located on this bike?
I saw a how to on this site for cleaning the carbs on an F4, but all 4 carbs came out together. Does the F3 work like that, or will I have to do it when the carbs are still on the bike? I have had the bike for over 4 yrs now, and I have never had the carbs apart or cleaned, so I think that it won't hurt to do so. Thanks again!!!
I saw a how to on this site for cleaning the carbs on an F4, but all 4 carbs came out together. Does the F3 work like that, or will I have to do it when the carbs are still on the bike? I have had the bike for over 4 yrs now, and I have never had the carbs apart or cleaned, so I think that it won't hurt to do so. Thanks again!!!
I agree with your mechanic 100%.
Spray starter fluid into the air intake, not the pump. Also, try bypassing the relay before you take the carbs apart.
Also, you could probably use a good carb cleaning anyway. Sounds liek you don't have a service manual; you should rectify that post-haste.
Spray starter fluid into the air intake, not the pump. Also, try bypassing the relay before you take the carbs apart.
Also, you could probably use a good carb cleaning anyway. Sounds liek you don't have a service manual; you should rectify that post-haste.
So I put a jumper wire on the relay plug on the blk/blue and blk/wht wires, and I can feel the pump kick on when I turn the ignition on. When the relay isn't bypassed, there is nothing from the pump. I disconnected the hose from the pump when the relay was bypassed to see if any fuel was coming out, but nothing. Just a drop or two when I turned the key off. Would that mean that I have a faulty relay or a bad pump? I thought it would still start without a pump...??? Tried draining the tank using fresh gas, but nothing is being pumped up to the bowls. I know the problem can't be the jets cause it is not getting any gas up to the bowls. Any ideas??
Take off the fuel pump,and run just the tank and a filter to the carbs to see if it starts.If it does, save money to get a fuel pump and relay.just to save your headache.I had the same problem with mines just put a tank ,filter,straight to carbs havent had time to try it yet but i know many people do it.
i would replace the r/r to if you havent.there know for going out and causing trouble as well.
i would replace the r/r to if you havent.there know for going out and causing trouble as well.
Where are you located if you are not far from me i will help you. I have pulled the carbs off my bike twice and twice off of my buddys F3 it is easy. and i can help check your fuel pump as well.
Have you tried hooking the pump up directly to the battery? Leave the pump connected to the tank and have the output dump into a something like a measuring glass or graduated cylinder. When you connect the pump to the battery, let it run for 5 seconds. Multiply the amount in the container by 12 and it should be in the area of 23.7 oz per min. If you're below that... then you've got a bad pump.


