Is the intake valve spring or the exhaust valve spring longer in the new Jetta?
2 Answers
The exhaust valve spring in the new Jetta is longer. Here are the relevant details: 1. The function of automotive valves: They are specifically responsible for introducing air into the engine and expelling exhaust gases after combustion. From the engine structure perspective, they are divided into intake valves and exhaust valves. The intake valve draws air into the engine to mix with fuel for combustion, while the exhaust valve expels the burned exhaust gases and dissipates heat. 2. Symptoms of damaged automotive valves: Abnormal noises will occur, the engine may experience unstable idling or poor acceleration during operation, overtaking performance may also decrease. In severe cases, it can lead to difficulty starting the engine, failure to ignite, and the vehicle may exhibit air leakage or increased carbon buildup.
I have been researching car engines for many years. On the new Jetta's 1.5L EA211 engine, the intake and exhaust valve springs are basically the same in length, designed to pursue balanced reliability. The main function of the springs is to control the opening and closing of the valves, preventing them from floating during high-speed operation. The exhaust valves operate at higher temperatures, so their springs might be slightly stronger in strength, but the difference in length is minimal and hard to distinguish with the naked eye during routine maintenance. When replacing springs, it is recommended to check them in pairs, as wear on one side can affect engine efficiency. Regular maintenance, such as cleaning carbon deposits, can extend their lifespan. This engine is quite durable, with low fuel consumption and few problems during daily driving, making it trustworthy.
