The Nissan Sentra loud engine noise causes are valves are loose or low oil. You will come into many problems with an engine. There could be excessive oil use, requiring the oil to be replaced sooner than expected. A really serious problem is the engine overheating. This may lead to fires and the car exploding. A gasket may be loose and that needs to be tightened up quickly. A spark plug may pop off, causing engine trouble. You can have oil leaks and those need to be fixed as soon as possible. The coolant needs to be changed every 60,000 miles. The spark plugs need to be changed every 100,000 miles unless it's a copper one. A cooper spark plug needs to be changed every 30,000 miles. Your air filter needs to be changed every 15,000 to 30,000 miles.
411guy
March 11, 2022
If older model with high mileage and engine is rattling while accelerating could be spark plug
Richard D
July 30, 2020
If your Nissan Sentra is making loud engine noises it could be due to a cracked or leaking exhaust manifold. Get your vehicle checked out right away to avoid further damage.
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