I need a little help. My machine stopped in the middle of a job. It will idle and sounds normal but when I throttle up or put a load on it it dies. I figured fuel filter under van. Replaced and same thing. Replaced the fuel pump with one rated the same and now nothing. There is a clear filter at the unit that is usually full of fuel when things are good and its not filing up. Could there be a blockage down in the fuel tap?