What are the common problems of the 3UZ engine?
1 Answers
Here is a detailed introduction to the common problems of the 3UZ engine: 1. Abnormal vibration: The most common issue is idle vibration caused by dirty throttle bodies. Other causes include faulty spark plugs, damaged ignition coils, and mechanical engine failures. 2. Severe carbon buildup in the engine: The main reason for severe carbon buildup is the use of low-quality engine oil and fuel. 3. Engine oil leaks: Engine oil leaks can be divided into visible and hidden types. Visible leaks are those that can be seen externally, such as valve cover leaks, oil pan leaks, front crankshaft seal leaks, and oil filter leaks. Hidden leaks are not visible externally, such as valve stem seal leaks and rear crankshaft seal leaks.