What Causes Engine Noise During Cold Start in Geely Vision?
3 Answers
Reasons for engine noise during cold start in Geely Vision: Poor oil lubrication: After the car has been parked for a day, the engine lubricant basically all flows back to the oil pan. During a cold engine start, the oil pump cannot immediately establish oil pressure and form an oil film between components. Especially the valves inside the cylinder head do not receive lubrication during cold starts. Whether it's hydraulic lifters or mechanical rocker arms, there will be some valve clearance, resulting in abnormal noise. Carbon canister solenoid valve noise: The function of the carbon canister solenoid valve is to open the electromagnetic valve installed between the carbon canister and the intake manifold after the engine starts. This not only reduces emissions but also lowers fuel consumption. However, abnormal noise may occur during its operation.
I've handled quite a few Geely Vision models at the repair shop. Common causes of abnormal engine noise during cold starts include belt looseness or aging issues. For example, the generator belt or timing belt may contract and harden at low temperatures, causing a squeaking sound when rubbing against the pulley. Additionally, insufficient oil flow can lead to poor lubrication, resulting in ticking sounds from the valve lifters or bearings. Another possibility is a faulty water pump or a failed tensioner spring, which increases vibration noise. It's recommended to first check the belt tensioner for cracks or looseness. For daily use, opt for 5W-30 low-viscosity oil to improve cold-start lubrication. From a safety perspective, don't ignore minor noises—seek a professional mechanic early to avoid worsening engine damage. Regular maintenance can prevent these issues, saving money and providing peace of mind.
I've been driving a Geely Vision for over a decade and have encountered abnormal noises during cold starts, mostly caused by the accessory belt being either too loose or too tight, resulting in friction sounds. In winter, the rubber belt hardens during cold starts, rubbing against the generator or water pump hub; high oil viscosity can also delay lubrication, causing internal components to rattle. Experience tells me that replacing the belt or adjusting its tension usually solves the problem. If not addressed promptly, the accumulated noise can increase component wear and affect engine longevity. I generally advise owners to first inspect the belt's condition themselves, checking for visible cracks, and then visit a 4S shop for minor repairs. This method is cost-effective and quick—don't wait until it breaks to fix it.
