Abnormal Noise from Engine Oil After Starting the Zunchi?
2 Answers
The reasons for abnormal noise from engine oil after starting the Zunchi include the following: Exhaust system failure: Noise caused by leakage at the exhaust gasket or perforation in the exhaust pipe. Intake system failure: Leakage or poor sealing at the intake manifold or throttle body can also lead to abnormal noise from engine oil. Engine chassis failure: Internal engine noise or loose components around the engine body, or noise caused by loose chassis parts or resonance interference. Transmission internal failure: Noise caused by insufficient oil or abnormal wear during driving.
I've repaired many Brilliance cars before. This kind of engine noise after ignition is most likely a fuel system issue. Cases I've seen include aging or damaged fuel pumps that make a humming sound when starting; or clogged/worn fuel injectors causing poor fuel flow and noise. Belt tension can also cause abnormal noises - especially if the alternator belt is loose, the unstable operation of fuel pump will create sounds. Insufficient engine oil affects lubrication too, increasing engine wear and noise. I recommend starting with simple checks: listen for the noise source location, then open the hood to inspect belt condition and oil level. If not addressed promptly, it might burn out the fuel pump or engine, leading to high repair costs. Best to visit a professional repair shop for thorough diagnostics - don't risk DIY fixes. Regular maintenance prevents these issues, as each oil change can reveal early warning signs.
