It's hard to strike a fire when the car is in the sun. What's wrong with the engine striking a fire?

It's hard to start. It is difficult to start because of the extremely hot weather, unless there are other problems you mentioned. You can check whether there is air resistance.

Or there is something wrong with the oil pump itself. Last time I stopped, I didn't pump enough fuel for the next start. It is possible that there is a problem with the one-way valve between the oil pump and the oil outlet pipe, resulting in backflow.

If it is not a one-way valve, it may be that the fuel injector leaks oil, which evaporates and is ignited when it is started, leading to the phenomenon of slapping. At the same time, it is also difficult to start.