hi i have a problem with car that i have been working on for while now is getting fuel have replacedfilter, pump,fuel injectors,plugs dist cap , rotor , fuel dist , have all been replaced but still have same problem car will start but wont hit on all 4 cylinders have checked compression too its good it will run better if you spray starting fluid in it then running on pump it self im about at the end of my patiencee can anyone tell me whats wrong?