Quote:
Originally Posted by GrittyWhiskey
Hey all, not new to bikes or cars, but I'm pretty stumped. Hopefully one of you can make me feel stupid.
Sold my 2010 250 track bike to a buddy of mine a couple years ago. Fast forward to the now times, and I discovered it's been sitting outside in the high Colorado mountains since day one, and hasn't been ridden, or even started  . Needless to say, I have the bike back.
Battery is weak, so I've been jumping it with a car, engine off. Pulled the carbs out and cleaned them, even though they looked remarkably clean. Floats and float needles looked great, and float needle tips moved just fine. Replaced the blackened spark plugs with new guys, and both coils are sparking. Petcock isn't allowing fuel to flow when on is selected, and the bowls are drained. Both cylinders passed the thumb compression test.
Bike will not start without the helping hand of some starting fluid. With the juice, it runs just long enough to burn it, and then die. By my math, the bike is getting the 4 things it needs to live, but is still unhappy.
What stupid thing am I forgetting?
Thanks in advance |
Not getting fuel for some reason.
Open the floatbowl drains to see if you have fuel - I'm guessing you don't. That would suggest the petcock isn't flowing due to lack of vacuum or plugged screens. Also check the inline fuel filter at the carb inlet.
If you do have fuel in the bowls, it could be plugged Pilot Jets or idle mixture passages. Have you adjusted the idle mixture screws? 2.5 turns out is usually a good start, then adjust to the highest RPMs when warm.
Tank is clean, fuel is fresh?