I have a 1996 1500 4x4 5.7.Im having a problem starting my truck.It cranks way to long before it fires.I replaced cap,rotor,plugs,wires,full filter.I did check on EGR,mass air sensor,coil.It started doing this about a month ago,now its getting on my nerves.I also replaced o2 sensors and put on magnaflow free flowing cats.Do you guys have any ideas?

 

clean the injectors