What to Do About Cold Idle Shaking?
2 Answers
Solutions for cold idle shaking: 1. Clean the fuel system: Clean the fuel system and check if the idle motor has carbon buildup. If so, clean it. Regular maintenance is also important, so clean it frequently to prevent carbon buildup. 2. Replace the spark plugs: If the spark plugs have excessive carbon buildup, remove and clean them. Replace the spark plugs if necessary, which can also solve the cold idle shaking issue. 3. Replace relevant components: For idle shaking caused by unstable oil pressure, identify leaks in the fuel supply system and replace relevant components if needed.
Cold engine idle shaking is indeed annoying, and my car often experiences this, especially on winter mornings when starting up. Typically, this is related to aging spark plugs; an unstable ignition system can cause shaking. I tried replacing the spark plugs, and the idle became much smoother. Carbon buildup in the throttle body can also easily clog the air intake, affecting the air-fuel mixture and causing the engine to shake noticeably. Clogged fuel injectors should not be overlooked either, as insufficient fuel supply leads to unstable idle. If the engine mounts are worn out, you can feel noticeable vibrations while sitting in the car. I suggest first cleaning the throttle body and checking the spark plugs yourself. If the problem persists, seek professional repair as soon as possible to avoid higher costs from worsening engine wear. Regular maintenance of the ignition system and fuel lines can effectively prevent this issue and make driving safer.
