Got my M1008 to start but it will only run for a couple seconds at a time. Seems to respond to the throttle, ie it revs higher when the petal is pushed but still only runs for a bit. Have replaced the filter, checked the fuel solenoid, and checked the fuel return lines for blockage. The line from the filter to the injector pump is new, and the pump seems to be pumping fuel up to the filter ok. It runs longer on the first try after 30 minutes of being off, but still only for maybe 6 - 8 seconds. Also, it is starting almost instantly, barely having to crank it at all. Anyone run into a problem like this or have any suggestions?