2002 Harley Davidson FXST Softail Standard "change crank shaft position sensor" Questions

...shaft(he said that was the problem)...within 5 min (he said). $95 for diagnosis. $400 for new throttle body install.600 mi round trip and $300 for gas......NO CHANGE in the problem........Any help ...

change your plugs, then drain the float bowl into a clear glass jar to examine contents. if fuel and spark seems ok, you will have to look at electrical. plug wires, crank shaft position sensor, coil.