I need some help and advice. We have a 1995 Gulfstream Sunvoyager motorhome on a P30 chasis. The engine was torn down when we bought it - long story short, after having heads redone, new piston, new valves, new lifters & rods, we have the engine back together. We have replaced both temp sensors in the heads (driver's & passenger's side), checked for vacuum leaks, new fuel pump, new cap & rotor, and still have a problem. It will start and run for a few seconds then shut down. If you can catch it before it shuts down and feather the throttle, you can keep it running, but not good. It will not hold a steady RPM. Suggestions please. Thanks.