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What causes the Cadillac CT6 to shake during cold starts?

1 Answers

GriffinLee

07/29/25 4:46pm

Here are the reasons why the Cadillac CT6 shakes during cold starts: 1. Insufficient engine temperature: When starting a cold engine, the temperature inside the engine is similar to the surrounding environment, which is not ideal for engine operation. In low temperatures, fuel atomization is poor, leading to reduced ignition energy and affecting performance, causing the car to shake. This phenomenon occurs more frequently in winter, so parking the car in a garage during cold weather can help alleviate engine shaking. 2. Incorrect air-fuel mixture ratio: During a cold start, the engine oil viscosity is high, and various components are not fully lubricated, making it easy for the air-fuel mixture ratio to be inaccurate. The car's computer may misjudge, reducing power output and causing shaking. 3. Carbon buildup in the engine: Carbon buildup is one of the main reasons for shaking during cold starts. Due to varying driving conditions and habits, different levels of carbon deposits can form on the valves and intake pipes, making cold starts difficult. This can also lead to insufficient power or even stalling while driving. If carbon buildup is severe, it should be cleaned promptly. If you cannot resolve it yourself, visit a 4S store for professional assistance.

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