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No crank to a mechanic means the starter motor doesn't spin the engine over, is this what you mean? Or do you mean the engine cranks over but will not fire up and run? If it is the latter have you added at least 3 gallons of gas to the tank to make sure the electric fuel pump inside the tank can properly prime? If not do that, also you can spray starting fluid into the engine engine air intake pipe after adding the 3 gallons and see if that gets it going. If it still will not start you have burned up the fuel pump and you will need to drop the fuel tank and replace the pump, remember the pump is cooled and lubricated by the gasoline it runs in, so when you run low on fuel or out you can very quickly severely damage the small electric fuel pump. Never let the gas gauge level go below 1/8 tank to prevent premature fuel pump failure.
As to the oil pressure check your oil pres. sending unit for power with a circuit tester while vehicle is running replace if necessary. First check the fuse for the fuel pump if it has powere on both sides when key is on check the fp relay (when you power a relay if you listen closely or put your finger on it you can normally hear or feel it click which is the equivalent of turning on a standard light switch) if none occur replace or if you can access your fuel pump check for power with key on if it has power but does nothing the pump needs to be replaced
possibly the fuel pump check the fuel pressure with a gauge on the fuel rail if its a gas motor, is it diesel if so your in luck cause im a diesel mechanic
I had this problem too exept I have no clue what parts or blah b;ah blah. I just know that my coil pack was getting fried.burnt out because my wires were bad. The mechanic I went to was a moron because I took the car to him 3 times and he kept saying it was the coil ad kept replacing it. I took it to my uncle and he said my wires were in horrible shape and when this is the problem it fries your coil making your car run like a lawn mower! Well all i did was replace my wires and the car ran great! Well I hope this helped..
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