■ Damaged spark plug wires
■ The intake manifold is very dirty or clogged
■ The engine air filter or air duct is clogged
■ The catalytic converter is clogged
■ Spark plugs in poor condition
■ Damaged spark plug wires
■ The intake manifold is very dirty or clogged
■ The engine air filter or air duct is clogged
■ The catalytic converter is clogged
■ Spark plugs in poor condition