I'm having some persistent problems with air getting into my fuel line. I'm able to bleed the lines, which is easy on this model, but after starting up, the motor runs weakly and instead of getting better eventually peters out. Obviously air is getting into the line but I can't figure out where it might be. Anyone else experience a similar problem?

- I recently replaced the sediment bowl and o-ring but it was running fine for a while.. might be a problem in that area?