I have checked the fuel pressure and fuel pump and tried another pump. I have done some checks of the ignition system and found the coil and related parts to be fine. This problem happened all at once. No previous warnings. I have been told to check the oil pressure switch and I replaced it. They range from $10 to $70 so I tried the $10 switch. This engine was rebuilt about 2000 miles ago so oil pressure should be OK to. I'm glad that someone else is challenged by this to. Thanks