09 Jetta is not easy to start after cleaning the throttle. What should I do?

There are many factors that make it difficult to start a car, such as carbon deposition and excessive carbon deposition in the throttle body. The spark plug and ignition coil are faulty, and the ignition coil does not work well at high temperature. The fuel injector is stuck and leaks oil, which leads to excessive mixing and makes it difficult to start a hot car. Poor working of water temperature sensor, crankshaft position sensor and gasoline pump will make it difficult to start a hot car, and such failures need to be checked comprehensively.