okay so my f2 has been running great since I fixed the fuel issue but now she's not actin right and I'm about ready to kick her to the curb. It takes me at a minimum of 10 minutes to get her started no matter what, the thing is once she finally fires it runs perfectly fine. Great throttle response, idles fine, you name it. I can even turn it off for an hour or so and it'll fire right back up but if it sits for say 3 or 4, it goes right back to the hard starting crap. Got brand new ngk's, fresh oil change and still have the same problem! Now I did notice she is running quite rich as the old plugs were nice and black and wet. Next step to lean her out a bit? If so how would I go about that? I do have a jet kit in her. Just sold my car and I need my bike to be running right!!!!! Someone please help me!!!!!

 

no idea bout a bike but on a car if the check valve that keeps pressure in the lines gets messed up it lets the pressure fall then it takes a lil while to get the fuel back up to the fuel rail... to test it.. cycle the key a few times to boost fuel pressure then turn it over.. if it shortens or fixes the issue the fuel check valve is bad.. most cars this is built right into the fuel pump and the pump needs to be replaced

 

carbs?

 

My bet is a bad float needle valve and you're dealing with a flooded engine. When was the last time the valves were adjusted?

 

f2's dont have fuel pumps, they are gravity fed.....
messed with them a but but its funny that she runs great after she finally starts!!!!
im gonna rip the carbs apart today and check out the needles, if the rubber tip is bad thats more than likely my problem!!!

 

true dat

 

how about the choke? does that bike have one?