Why Does the Car Shake More as It Gets Hotter?

[LandonAnn]

The reasons why the car shakes more as it gets hotter are as follows: Intake system malfunction: When the throttle or intake passage has excessive impurities or the air filter element is clogged, the idle passage area becomes too small, preventing complete air delivery to the cylinders. When the air volume in the cylinders is lower than normal, the mixture concentration becomes too high, leading to incomplete combustion in the cylinders, which causes the engine to shake at idle. Ignition system malfunction: Issues with the spark plugs in the car. The function of the spark plugs is to conduct high-voltage electricity into the engine's combustion chamber and generate an electric spark to ignite the combustible mixture. If the spark plugs have excessive carbon buildup, the combustion of the mixture will be poor, resulting in uneven engine power or engine shaking.