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It should be gone once the tank is emptied and refilled. White smoke or black smoke? If it is black your running rich and it is a carb issue. If white, it could be valve seals since it is only on initial start up. I doubt whether the seafoam would do them in by itself. I used seafoam pretty strong too but had to pull the carbs anyhow. I was amazed how clean they were when I got them out (attribute totally to seafoam). My bike had been sitting a very long time also, upwards of 5 years. I did not have a smoke issue past initial startup. Sounds like maybe you have something else going on that seafoam didn't cure.
It should be gone once the tank is emptied and refilled. White smoke or black smoke? If it is black your running rich and it is a carb issue. If white, it could be valve seals since it is only on initial start up. I doubt whether the seafoam would do them in by itself. I used seafoam pretty strong too but had to pull the carbs anyhow. I was amazed how clean they were when I got them out (attribute totally to seafoam). My bike had been sitting a very long time also, upwards of 5 years. I did not have a smoke issue past initial startup. Sounds like maybe you have something else going on that seafoam didn't cure.
