What Causes Difficulty in Accelerating When the Engine is Hot?

[HarrisonLynn]

Here are the reasons why a car may have difficulty accelerating when the engine is hot: 1. Reason one: Check the spark plug wires for proper sparking. If the car has high mileage, also inspect for excessive carbon buildup and consider cleaning the throttle body. 2. Reason two: Another possibility is insufficient fuel supply or weak ignition energy (since the car can start when cold and continue running without stalling, indicating no timing issues). Therefore, focus on checking the ignition and fuel systems. 3. Reason three: This situation is typically caused by dirty fuel injectors. Carbon deposits inside the injectors can harden under high temperatures, reducing the diameter of the injector nozzles and causing poor fuel spray or even no spray. Additionally, high temperatures increase gasoline vaporization, leading to a leaner air-fuel mixture, which results in difficulty accelerating when the engine is hot. This condition may also be accompanied by rough idling after starting the engine.