How to Remove Valves?
2 Answers
Method for removing valves: 1. Use a specialized valve spring compressor to compress the valve spring; 2. Remove or install the valve lock pieces or lock pins, and slowly release the valve spring. The removed valves must be clearly marked and arranged in order to avoid damaging the fit between the valves, valve seats, and valve guides. The valve lock pieces or pins are very small, so care should be taken not to lose them. The function of the valves is to specifically input air into the engine and expel the exhaust gases after combustion. Structurally, the engine is divided into intake valves and exhaust valves. The intake valve's role is to draw air into the engine to mix with fuel for combustion, while the exhaust valve's role is to expel the burned exhaust gases and dissipate heat.
The first step in removing the valves is to ensure the vehicle is cooled down before operation, and disconnect the negative battery terminal to prevent accidental starting. I will prepare basic tools such as a socket wrench, valve spring compressor, and a puller tool. Specific steps include: removing the cylinder head bolts, lifting off the cylinder head to expose the valves; then using the compressor to press down on the valve spring, compressing it until the lock pieces loosen, carefully removing the lock pieces and valve spring; finally, gently pulling out the valve stem. It's essential to wear goggles and gloves throughout the process, as flying springs can be dangerous. Through years of DIY experience, I've found that valve carbon buildup is a common issue, so cleaning them can improve engine efficiency. If the spring is stuck, avoid forcing it to prevent damage to other components. The whole process is somewhat technical, so I recommend consulting the vehicle's repair manual for specific details first.
