A car needs spark, fuel and compression to start. You said turning over the engine it is a little difficult this is probably as the cylinders come up on the compression stroke the compression is offering resistance. Check for spark at the spark plug by removing a spark plug wire and holding the plug wire near a good ground and get a friend to crank over the car, see if you have spark. then get a friend to crank over the engine with a fuel line opened at the fuel rail to see if the fuel pump is sending fuel to the engine. After that the engine has sensors that are critical to tell the computer in your car how much air is entering the engine and where components are in the engine at any given time (camshaft and crank shaft sensor) these sensor inputs are needed for the computer to control spark and fuel. Failure will stop the engine from running. There is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You can get a one week subrcription or year subscription very cheap. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual try http://bit.ly/mitchell_repair_manuals_online
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