- Vapor lock: When the engine is hot, the fuel in the fuel lines and carburetor can vaporize and create vapor locks, blocking the flow of fuel to the engine. This can cause the engine to stall and it won't start until the fuel cools down and condenses back into liquid.
- Fuel pump failure: A faulty fuel pump can cause low fuel pressure, which can lead to the engine cutting off when hot. When the fuel pump is unable to provide enough fuel to the engine, it will run lean and eventually stall.
- Faulty ignition components: Ignition problems, such as a weak spark or a faulty ignition coil, can also cause the engine to cut off when hot. When the spark is not strong enough, the engine won't be able to burn the air/fuel mixture properly and will eventually stall.
- Coolant temperature sensor issue: A faulty coolant temperature sensor can provide incorrect temperature readings to the engine computer (ECU), which can cause the engine to run rich or lean. This can lead to engine stalling and difficulty starting when hot.
- Head gasket failure: A blown head gasket can cause a loss of coolant, leading to overheating and engine stalling. When the head gasket fails, coolant can enter the combustion chambers, causing the engine to run rough and eventually stall.
To diagnose the exact cause of the problem, it's recommended to have a qualified mechanic inspect the vehicle and perform the necessary tests.
