Bad gas
I believe I ended up with a tank of bad gas
I tried a bottle of dry gas in case the gas had water in it but didn't do any good. I think my only option is to drain the tank and put fresh gas in. How best to do this? Disconnect the line from the fuel filter to a container and pump the gas out until there is about 1/8 tank left (to avoid burning out the pump)? How to dispose of the bad gas? Of course I'd replace the fuel filter while I'm at it. 





