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SUPERGILDO43
June 16th, 2008, 01:17 AM
I just got my first road bike. Its a 1994 honda cbr600f2. I bought it off soundman and apparently it was running when it was parked but has been parked for a while. So I drained all the fuel checked the oil bleh bleh bleh, and put her back together. I am having trouble getting this thing running now. I pulled the gas tank again, pulled off all the intake junk and sprayed the carbs with carb cleaner. put back together, nothing. found I put the vac line in the wrong place, switched it and now fuel was pumping from the tank, but no matter how much I throttled it, I never saw fuel drip from the bottom. so I am thinking that the the needle pin or whatever its called may be gunked up. I can get it to start if I plug the vac hose and the fuel hose when the tank and air filter is off (only if they are both plugged, maybe coincidence??)

is it a carb adjustment? I can keep it going with some brake parts cleaner, no filter, a little gas poured in the carb and plugging the hoses, but as soon as I let off full throttle, it will die immediately. exhaust will blow a small amount of black smoke, but I dont have a muffler on it right now...

SUPERGILDO43
June 16th, 2008, 11:21 PM
ok well I dont know if this just hasnt been seen, but heres my update for the day, maybe you guys can suggest, I am fairly sure I got it nailed.

I cleaned the carb really well. it was pretty gunked up with old gas, jets didnt look "passable" so that all got cleaned. put her back together and I would get 1 or 2 cylinders to fire every once in a while, so I pulled the plugs. plug 1 clean and sparking, 2 no spark 3 no spark and four was a spark. 2 and 3 are on the same ignition coil, so I am THINKING thats my problem. I just hope it isnt somewhere else in the system, although I got powerful sparks off 1 and 4. anyone agree with my diagnoses? disagree suggestions? anyone? is anyone reading this?

Jeffro600
June 17th, 2008, 12:02 AM
Yup...sounds like an electrical problem...possibly a bad coil. Start there and make sure you got spark, then move on to the rest of the fuel system.