OK HERE IS SOMETHING ELSE TO CHECK AND THIS IS VERY IMPORTANT THAT THIS LINE IS HOOKED UP CORRECTLY , IF NOT I GUARENTEE IT WILL RUNAWAY, ON TOP ON THE INTAKE ELBOW THERE IS A SMALL 90 DEGREE FITTING WITH A RUBBER LINE ON IT, FOLLOW IT ACROSS THE TOP OF THE ENG IT MUST PLUG ON TO THE TOP OF THE INJ PUMP ON A SMALL NIPPLE THAT IS ON THE DOME OF THE INJ PUMP , IF IT IS PLUGGED ONTO THE FITTING ON THE BACK OF THE PUMP WHERE THERE IS A FUEL RETURN LINE ACTUALL 2 OF THEM, SAME SIZE AS THE MANIFOLD PRESSURE LINE, FROM THE INT TO THE ANEROID ON TOP OF THE PUMP DOUBLE CHECK THOSE LINES , THERE IS A LARGE BANJO FITTING ON THE BACK OF THE PUMP WITH ONE LINE GOING UP TO THE INJ RAIL AND ANOTHER GOING TO A FITTING THAT LEADS BACK TO THE FUEL TANK ,THESE ARE FUEL RETURN LINES , IF ONE OF THESE LINES GETS MIXED WITH THE PRESS LINE . WHAT WILL HAPPEN WHEN THE ENG IS FIRST STARTED IT WILL RUN FINE FOR ABOUT 30 SECONDS OR SO AND THEN THE RETURN FUEL INSTEAD OF GOING BACK TO THE TANK GETS PUSHED ACROSS THE TOP OF THE ENG AND RIGHT IN TO THE TOP OF THE INTAKE MANIFOLD PRESSURE PORT AND THEN THE ENG WILL RUNAWAY WITH UNMETERED FUEL ,AND AS THE FUEL IS PUSHED IS PUSHED INTO THE MANIFOLD IT WILL START TO SPEED UP AND AS IT SPEEDS UP MORE FUEL IS SUPPOSSED TO BE RETURN TO THE TANK BUT INSTEAD GOES INTO THE INTAKE, THIS IS NOT UNCOMMON AT ALL CHECK THESE LINES OUT JERRY