What are common engine failures?

1 Answers
DeJoseph
07/29/25 1:59pm
Common engine failures include: 1. Engine abnormal noise: Engine abnormal noise is divided into cold start noise and hot engine noise. During cold start, the oil pump cannot establish oil pressure and form an oil film immediately, causing parts to lack lubrication and produce noise; 2. Engine carbon deposits: Mainly caused by incomplete combustion during engine operation, combined with gummy substances generated from impurities in fuel and engine oil during combustion, which gradually form carbon deposits over time; 3. Frequently dirty throttle body: A dirty throttle body can cause high idle speed, poor acceleration, and engine warning light alerts; 4. Engine oil burning: Oil burning is usually caused by incorrect oil grade, aging or damaged valve stem seals, piston ring sealing failure leading to oil blow-by, or damaged oil separator/crankcase ventilation system.
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