95 5.7 with an automatic transmission. Cranks but wont start. Replaced the fuel relay. Battery was weak so we hooked up the jumper cables and it was cranking healthy but wont turn over. I am suspecting the alternator to be weak but I am not sure if that would cause the truck not to turn over. I also sprayed starter fluid into the throttle body and it doesnt make the difference so I am kind of eliminating the fuel issue. I am planning on replacing the battery, alternator, fuel filter, spark plugs/wires and the distributor. Would a bad alternator lead to a failed start. Also the truck has ran out of gas the other day but there is about 3-4 gallons in it right now. Any help or suggestions?
