There are many reasons why it is not easy to strike the ignition, not necessarily the oil circuit. My car has the same problem. The reason why it is not easy to strike a fire and shake the engine is that there is something wrong with the camshaft sensor. I don't know how your car drives. Turn off the engine after the hot car, okay? You need 4s to check the throttle, spark plug, ignition coil, gasoline pump and various sensors for you. Mine was found out in this order. Good luck! ~~~