96 Ram 1500 Auto-misfiring

I have replaced the cap & rotor, plugs, and plug wires. Also added HEET to the tank-thinking I had water in the gas. Still misfiring and engine coder still says multi-cylinder misfire, can anyone help?:banghead:

bad coil?
contaminated fuel?
bad sensors?

After replacing the cam sensor, checked the injectors and they were shot, ended up replacing injectors and fuel rails. Thanks for the help though.