I need help. My stihl bg55 started acting up and would not run right. When you gave it full throttle it bogged out and died. I replaced the fuel line and was told that it was a common problem. I cant get the fuel bulb to pump up like it should but anyway It will still run. Same result. Give it full throttle and it dies. Fuel filter is clean as a pin. I have a fuel starvation problem that I cant solve. Any suggestions?