How to Remove Car Valves?
2 Answers
Steps for disassembling and assembling the car engine valve group. The valve group includes components such as valves, valve guides, valve seats, and valve springs. Some intake valves also have valve rotating mechanisms. "Remove the cylinder head fixing screws, noting that the screws should be loosened in a crisscross pattern from both ends towards the center. Remove the cylinder head gasket, paying attention to the installation orientation of the gasket. Flip the engine over and remove the oil pan fixing screws (note that the screws should also be loosened from both ends towards the center). Remove the oil pan and the oil pan sealing gasket. Loosen the fixing screws of the oil coarse filter and remove the oil filter, oil pump sprocket, and oil pump. Disassemble the engine piston connecting rod group, and rotate the crankshaft to position the pistons of cylinders 1 and 4 at the bottom dead center.
Removing car valves is a challenging job, and I've done it myself several times. The first step is to ensure the engine is completely cooled to avoid burns or damaging components. Next, disconnect the battery's negative terminal to cut off the power supply. Then, remove the valve cover and loosen the screws with a wrench, being careful not to lose any screws or washers. At this point, you'll see the valve assembly, and removing the rocker arms and springs is crucial. I use a specialized valve spring compression tool to compress the springs, then remove the valve locks. This allows you to gently take out the valve. Remember to mark each valve's position so you can reassemble them correctly. During the process, check the valve stems and seats for wear—if you find cracks or deformations, you may need to replace them. Finally, clean all surfaces to ensure no dirt remains, as it can affect sealing. The whole process takes about an hour, but safety comes first—wear gloves and goggles. After finishing, don't forget to test the engine for smooth operation. I recommend beginners watch tutorial videos first to build confidence before attempting this job, as it requires patience.
