Junqueyardjim, you are probably right about it not being the pump, but wrong about the solution being amongst the post's responses. I have tried everything suggested and have determined while checking those possibilities, that the engine had little or no oil in it. Another person here just suggested that the engine (compression) died during the last drive, due to the lack of oil. I am beginning to think likewise because WD40 in the intake did not cause it to fire. I can say that after I put the oil in, as I cranked the engine and watched the oil pressure gauge climb, the cranking got slower, indicting an increase in compression/resistance. If that is the case, the compression increase is apparently not sufficient to aid in starting.