
Valve noise is related to engine oil. The following are the related reasons: 1. Insufficient engine oil: When the engine oil level is insufficient and drops to a certain extent, air enters the hydraulic tappet along with the oil passage, creating a gap and causing valve noise. 2. Sludge in the oil passage: During engine operation, engine oil circulates in the hydraulic tappet. When sludge forms in the engine, it can block the oil passage, causing the hydraulic tappet's automatic gap adjustment function to fail, resulting in valve noise. 3. Incorrect oil viscosity selection: When the engine is severely worn, using oil with too low viscosity (e.g., 20 or 30 viscosity oil) can also cause valve noise. In such cases, switching to higher viscosity oil (e.g., 40 or 50 viscosity oil) can eliminate the valve noise.

That day when I was driving my child to school, the engine suddenly made a 'clicking' sound, resembling valve noise. I quickly pulled over to check the dipstick and was shocked to find the oil level dangerously low. Engine oil is the lubricant for the engine; if it's too low or too old, the friction in the valve train increases, leading to persistent noise over time. My car is eight years old and has had similar issues several times. Usually, changing to fresh oil can alleviate the problem, but it's best not to delay too long to avoid damaging other components. I make it a habit to check the oil condition myself every month. If the color darkens or the level is too low, I top it up or change it promptly to avoid unnecessary delays and extra repair costs. Keeping a small bottle of the right oil in the car for emergencies is also quite useful, especially since for an older car shouldn't be taken lightly.

When it comes to valve noise, I believe it's closely related to engine oil, because the valve system relies entirely on oil for lubrication and cooling. Poor oil quality or insufficient quantity increases friction, and noise naturally occurs. For example, my previous car had a buzzing noise after using cheap oil. Specifically, if the oil viscosity is inappropriate (too thin or too thick affects lubrication), or if it's been used for too long without a change, impurities can clog the oil passages, causing the valve parts to run dry and make noise. Prevention is simple: regularly check the oil level and color, and it's recommended to change it every 5,000 kilometers or so. Don't just focus on the valve issue and forget the whole picture—also check the filter and seals to avoid a chain reaction damaging more components. During daily driving, if you hear any unusual noise, manually inspect it or take it to a shop for a check. Safety first is always the right approach.

As a new driver, I recently encountered this issue. My car's engine was making a "ticking" sound, and a friend suggested it might be a valve problem. Upon checking, the engine oil was indeed a bit low. If the oil is insufficient or old, its lubricating effect diminishes, and the increased valve clearance can easily cause noise. It's recommended to change the oil promptly and use the appropriate type, such as 5W-30 as specified in the manual, and avoid the wrong brand just to save money. During regular maintenance, have the mechanic check the fluid levels for you—it's simple and worry-free.

Valve noise is often related to engine oil, mainly caused by insufficient lubrication due to low oil level or deteriorated oil. From an economic perspective, I believe regular oil can save money. For example, check the oil level monthly by pulling out the dipstick to see if the color and quantity are normal. If the oil is cloudy or low, top it up or replace it promptly; ignoring it may turn minor noise into major repair costs. Also, remember to check the oil pump and valve clearance, maintaining the entire lubrication system to avoid related issues. Developing this habit makes it less likely to cause problems.

I've observed that valve noise often stems from improper oil . Low oil levels, overdue oil changes, or accumulated impurities can all lead to insufficient valve lubrication and increased friction noise. The solution is to prioritize checking and changing the engine oil, preferably every six months or 8,000 kilometers, to maintain fresh lubrication. A personal tip: Pay attention to oil temperature adaptability during seasonal changes, using thinner oil in winter to reduce startup noise. Maintaining the entire system properly is more reliable for preventing issues proactively.


