Why does the Jimny shake when cold and have weak acceleration?

[AveryDella]

Jimny shaking when cold and weak acceleration reasons are as follows: Fuel system failure: Many people think throttle carbon buildup affects engine acceleration performance. But I believe throttle carbon buildup only causes unstable idle, with little impact on engine acceleration. A clogged or waterlogged air filter reduces air intake, leading to over-rich mixture, incomplete combustion, and poor acceleration. Electrical circuit failure: Problems with the mass airflow sensor reduce air intake, causing over-rich or over-lean mixture, affecting acceleration. Damaged spark plugs in individual cylinders (i.e., misfiring) impact acceleration. Also, ignition wire leakage. Overheating or faulty temperature sensors similarly affect acceleration. Clogged catalytic converter or faulty oxygen sensors can also cause poor engine acceleration.