white smoke

[Sal C]

So, got the carbs cleaned, back on the bike (1979 GS550), and fired her up. All cylinders are firing, but after about 5 minutes of running, white smoke is coming out of the left exhaust pipe. Cylinders 1 + 2 feed that side. Anyone got any ideas? Like I had mentioned before, the bike did sit outside for @ least 2 yrs in the rain, sun, etc. I was hopeing it was just crud in the headers? Any ideas
Thanks

[BassCliff]

Hi,

Did you set the float heights? Did you bench sync the carbs? Where are the mixture screws set? Is there still Stabil in the gas? Have you adjusted the valves?


Thank you for your indulgence,

BassCliff

[kflaggs1kevin]

is your petcock vacuum? mine went bad this past weekend and was dumping fuel stright into the cylinder and running in the exhaust pipe so i canged the oil and bought a petcock rebuild kit hopefully it fixes it and mine was smoking white also