What is the normal valve clearance for the Crown?

[StRemington]

The valve clearance for the Crown is 0.25mm for the intake valve and 0.30mm for the exhaust valve. The function of the car valve is to specifically input air into the engine and discharge the exhaust gas after combustion. The symptoms of car valve damage are as follows: 1. It affects the working efficiency of the engine, and the car's power will decrease; 2. Abnormal noise will be generated, the engine will experience unstable idling or poor acceleration during operation, and the overtaking performance will also decrease. In severe cases, it will also cause difficulty in starting the engine, resulting in failure to ignite, air leakage, or increased carbon deposits; 3. It leads to unstable cylinder operation. Unstable cylinders will cause the engine to shake, the engine to work weakly, and the exhaust pipe to become blocked, which may result in black smoke from the exhaust in severe cases.

[DeArianna]

As a car enthusiast, I've studied valve clearance. For the Toyota Crown, the normal range is generally 0.15 to 0.25 mm for intake valves and 0.25 to 0.35 mm for exhaust valves, depending on the year and engine model. If the clearance is too small, the valves may not close properly when the engine is hot, leading to air leaks, reduced power, or even burnt valves. If it's too large, the engine will sound like a tractor. It's best to check when the engine is cold using a feeler gauge, and to loosen the lock nut and adjust slowly. Don't attempt this yourself, as small mistakes can cause major issues like engine overheating and damage. I recommend having a technician check the clearance during regular maintenance, especially for older Crown owners, to effectively extend engine life and avoid costly repairs. Carbon buildup over time can also affect clearance values, so timely oil changes are crucial.

[OAaliyah]

Having played with cars for years, I recall the valve clearance for the Toyota Crown's intake and exhaust is typically around 0.20mm and 0.30mm, but always check your vehicle's manual to confirm. Abnormal clearance can make the engine run rough: too tight and the valves may stick or overheat, damaging components; too loose increases noise and fuel consumption. Last year, I noticed abnormal noises in my friend's Crown – after some troubleshooting, it turned out to be excessive clearance, and a simple adjustment fixed it. Measuring requires removing the valve cover and testing with a feeler gauge; basic tools will do, but care is needed. DIY is not recommended for beginners, as mistakes can cause more trouble. In daily driving, pay attention to cold-start noise changes as an early warning. The Crown's engine is quite robust, but neglecting maintenance can be costly – regular checks are the way to save money.

[VanColeman]

Discussing the normal valve clearance values, for the Toyota Crown, it's approximately 0.15-0.25mm for intake and 0.25-0.35mm for exhaust. Incorrect clearance affects engine performance; too narrow when hot may prevent full closure, damaging the valves, while too wide causes noise and power loss. To check it yourself, use a feeler gauge when the engine is cold. Adjusting requires professional tools and careful operation. Clearance changes usually occur due to wear or carbon buildup. It's recommended to consult the manual or visit a repair shop to prevent issues, saving time and hassle.