If you decide to blow air down the fuel line into the tank remember to remove the fuel cap first. That is unless you want a larger fuel tank. I know you knew this already. Also give the service station a call and ask if they have had any complaints on their fuel reciently just in case you have to dump the tankful. Some people are honest. Really bad fuel gets out once in a while, Ocasionally a delivery tanker that had a load of bunker C for example is not cleaned out well enough before loading a lighter base fuel.