Triumphrat

Darkness

I left my bike in the garage for about a year and a half with a half tank of gas in. I started the bike up and it ran very very rough.

Should I put fuel injector cleaner in the tank?
Use some fuel stabilizer-after the fact?
Siphon the tank?
or just run it? :???:

OldTimeBiker

Drain the tank, dispose of the old fuel by putting it in your car or truck while the tank is 3/4 full, (won't hurt a thing that way), flush your tank with a little bit of fresh gas and pour that into your car or truck after flushing your bikes tank.
(This way you are being enviromentally responsible) Fill the bike tank with highest octane fresh pump gas available, Cut your fuel line and install an inline filter, throw in an ounce or two of Gumout or similar carb/fuel injector cleaner. Take your bike for a long ride. If, after you burn about half of that tankful of gas the rough running doesn't improve, you'll need to remove and disassemble the carb(s) and clean the fuel passages. If you have fuel injection, follow the procedure in your service manual for cleaning or replacing clogged injectors.
Next time, use Sta-Bil!

__________________
"Flattrackers go in deeper and come out harder!"...Or... "Racing is life, everything else is just waiting."...or... (With apologies to Gen. McArthur) "Old motorcycle racers never die...they just slip off the groove and fade into the dust."

Darkness

Thanks, I was hoping for an easy soultion....

Speed3

What OTB said. Drain the tank, and fill with fresh gas. But add a can of Sea Foam, which you can get at NAPA. It is an injector cleaner which will solve your problem. I put a can in my '70 Honda 350, and it cleaned it good!