PROBLEM WITH JOHN DEERE 755

[rch56]

WE JUST PURCHASED JD 755. TRACTOR WILL START BUT ACTS LIKE ONLY RUNNING ONE 1 CYLINDER. SHAKES TERRIBLE, AFTER 2 TO 3 MINUTES PICKES UP OTHER CYLINDERS AND RUNS GOOD. CHECKED FILTER, FUEL LIFT PUMP TO INJ PUMP.GOOD FUEL FLOW TO INJECTION PUMP. ALSO NO THROTTLE RESPONSE TIL PICKES UP OTHER CYLINDERS. THINKING IF BAD INJECTOR OR PUMP IT WOULD NOT RUN RIGHT AFTER WAITING 2 TO 3 MINUTES. WHAT SHOULD I CHECK NEXT

[Jerry/MT]

Makes sure the all the fuel system lines are tight. It sounds like your getting air in the fuel system somewhere and the engine runs correctly once it clears the air out.