What Causes Loud Valve Noise in the New Santana?

[StLeah]

New Santana's loud valve noise is caused by engine oil and hydraulic lifters. The specific reasons are: Insufficient engine oil quantity reduces the oil pump's output or prevents pumping due to air intake, leading to decreased oil pressure. This results in increased wear between the crankshaft and bearings, as well as between the cylinder liners and pistons due to poor lubrication, thus causing loud noise. Damaged hydraulic lifters: Valves rely on hydraulic lifters for automatic clearance adjustment. If damaged, the clearance between the main crankshaft and connecting rod bearings gradually increases, leakage rises, oil pressure drops, leading to louder valve noise. Methods to prevent increased valve noise include: Ensure normal oil level; add the same model of engine oil from the same manufacturer when insufficient. Replace worn oil pump components, grind the inner plane of the pump cover to restore the gap with the gear end face to standard range, ensuring normal operation of the oil pump. Ensure proper use of hydraulic lifters. After long-term engine use, the clearance between the main crankshaft and connecting rod bearings gradually increases, leakage rises, and oil pressure drops. It is necessary to grind the crankshaft, select new connecting rod bearings and main bearings to restore proper clearance.

[LeWalker]

I've also experienced loud valve noise with the new Santana. After driving the new car for a while, I could hear clear tapping sounds when opening the hood, mainly due to inaccurate valve clearance adjustment. It might be caused by imprecise assembly during production or component loosening after the break-in period. Additionally, insufficient or too-thin engine oil can lead to low oil pressure, preventing proper valve lift and making the noise more noticeable. I first checked the oil level - if low, try adding or replacing the oil. If the noise decreases when the engine warms up, it's not too bad, but if it remains loud, it's best to visit the 4S shop for valve clearance adjustment. Long-term neglect may increase engine wear and maintenance costs. Even new cars require proper care - regularly check oil and belts.

[ElenaAnn]

Valve noise is quite common in the new Santana, mostly caused by excessive clearance or slight wear on the camshaft. If the clearance is not properly adjusted, the engine may not run smoothly in the early stages of the new car, leading to noise. Insufficient oil supply can also make the valves work less flexibly, and the noise becomes louder when oil pressure is low. I would recommend using a professional tool to check the oil pressure and ensure the oil pump is functioning properly. If it's a clearance issue, adjusting it with a feeler gauge is a simple task. Don't delay, otherwise, engine damage can lead to expensive repairs. When driving, avoid sudden acceleration or prolonged high loads to make the valves more durable. For new cars, keep an eye on them, as early intervention is the most hassle-free.

[DeJayden]

My car is also a new Santana, and the loud valve noise is really annoying. Most of the time, it's caused by improperly adjusted clearance or clogged oil passages due to dirty oil. New cars may experience this issue before the first maintenance. If the noise doesn't decrease after the engine warms up, check for worn connecting rod bearings or a loose timing chain. You can try locating the noise yourself to confirm if it's from the valve area. It's recommended to visit a repair shop for a thorough inspection. Adjusting the clearance and switching to high-quality oil usually helps. Delaying repairs can lead to louder engine noise and other potential failures. Even for new cars, don't neglect regular maintenance—keeping the oil clean is crucial.

[DelNatalie]

Driving a new Santana, loud valve noise can be concerning. It's usually caused by excessive valve stem clearance or unstable oil supply. Possible reasons include factory assembly errors or component fatigue after prolonged use. When oil pressure is insufficient, valves don't operate properly, making more noise. Simple self-check: verify if engine oil is sufficient and clean - replace if low. If noise is loud during cold starts but disappears after warming up, it's acceptable; otherwise, visit a professional repair shop immediately for clearance adjustment. Don't underestimate this issue - prolonged neglect may damage critical engine components. New cars need extra care: avoid aggressive driving in daily use and perform regular maintenance to prevent problems.

[AndrewAnn]

The valve noise on the new Santana is too loud. I know it's either a clearance issue or low oil pressure. If the clearance isn't adjusted properly, there will be friction sounds when the new car is running; clogged oil passages or insufficient oil pump pressure can also cause valve operation to be jerky. Check the oil level yourself—if it's too low, top it up or replace it. If the noise decreases after the engine warms up, it's a minor issue; if the loud noise persists, don't delay—get a mechanic to fix it. Delaying repairs can accelerate engine wear, potentially causing more abnormal noises or performance degradation. Use high-quality oil for new cars—don't skimp on cost. Drive gently and avoid frequently revving the engine too high. With proper maintenance, the car's condition can be preserved for a long time.