Vehicle Questions and Answers
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If your Nissan Sentra has a loud engine noise, it could be due to loose valves or low oil, which can lead to various engine issues. Problems may arise such as increased oil consumption, the need for more frequent oil changes, and the risk of engine overheating which could potentially cause fires or even an explosion. Loose gaskets should be tightened promptly, and loose spark plugs can also cause trouble. It's important to address oil leaks promptly. The coolant should be replaced every 60,000 miles, and spark plugs should typically be changed every 100,000 miles unless using a copper spark plug, which should be changed every 30,000 miles. Your air filter should be replaced every 15,000 to 30,000 miles.
If an older car with a lot of miles on it is making a rattling noise when you press on the gas, it might be a problem with the spark plugs.
If your Nissan Sentra is producing loud engine sounds, it might be because of a cracked or leaking exhaust manifold. It is important to have your car inspected promptly to prevent additional harm.