Chevrolet Aveo starting issue after spark plug and coil pack replacement, experiencing hesitation on Chevrolet Aveo

Some Chevrolet Aveo owners report experiencing starting issues and hesitation after replacing spark plugs and coil packs. These problems may stem from misfiring, which can lead to rough engine performance and difficulty starting. Additionally, timing-related issues, such as incorrect firing of spark plugs or desynchronization between the camshaft and crankshaft, can prevent the vehicle from starting altogether. Some owners have noted persistent misfiring in specific cylinders, particularly the 2nd and 3rd, often accompanied by oil in the spark plug wells, even after replacing the coil pack and valve cover gasket. Incorrect installation of spark plugs, using the wrong type, or improper gap settings can also contribute to starting difficulties and potential damage to the new plugs. In certain cases, applying WD40 to plugs and sockets has resolved starting issues, suggesting that electrical connection problems may be affecting engine performance. Addressing these potential issues is crucial for troubleshooting and resolving starting problems in the Chevrolet Aveo.