Chevrolet Repair: wont start, compression stroke, head gasket

Question
i have a 1995 cavalier and one day while driving it just dyed the engine stopped immediately i put a new timing chain new crank bearings in it i have spark and fuel is being delivered threw the lines i pulled the head and the head gasket is fine and no bent valves but it still will not start it rolls over fine and pops a little while rolling over not back firing but refuses to start pleases help  

Answer
OK. Your going to need to e-mail me some more info at zimmer_jrz71@yahoo.com. Do you actually have spark at the plugs. And are the injectors themselves firing(your fuel pressure might be low to, you should have no lower than 20 psi, the fuel rail should have a pressure check point and you can borrow the pressure checker from autozone also). If thats the case your fuel filter could be bad or the fuel pump might be. If not I'm going to have to say that either the crank position or cam position sensor isn't working right(they control the spark and fuel)when you installed the timing chain and did all that work did you make absolutely sure the timing was right, just one tooth off and it wont work. Also you need to check that all cylinders have 60 to 80 psi on the compression stroke. If all that still isn't working and all your wiring is good(no loose wires, no shorts in the system) your ignition control module or your ECM might be bad. You will need to go to autozone and they can loan you a code reader and your car should be OBD2(you can tell by checking the plug in port usually located directly under steering column, if it is OBD2 it should be the shape of a rectangle,OBD1 is in the shape of a trapezoid). You can take your ICM in to autozone and they can check that. If the ECM is bad,which the code reader will tell you, is located in the passenger front fender well. You can access that by taking the plastic out from under the front bumper. E-mail me and let me know where your at and I will try to assist you more.