What are the reasons for the car shaking and making a clunking sound when starting in first gear?

[ElenaAnn]

The reasons for the car shaking and making a clunking sound when starting in first gear are: 1. Poor fuel quality; 2. Carbon deposits on the engine valves and intake manifold; 3. Poor lubrication or damage to the spark plugs; 4. Insufficient engine power; 5. Aging rubber components inside the engine mounts and transmission mounts; 6. Aging or leakage in the high-voltage wires. Solutions for car shaking when starting: 1. Choose gasoline with guaranteed quality; 2. Clean carbon deposits from the engine; 3. Apply lubricant to the spark plugs; 4. Inspect parts or mount rubber for aging; 5. Check the condition of the high-voltage wires and ignition coils; 6. Inspect the electrical system for faults.