Engine Overview and Common Failures
The weight of the 1UZ-FE engine according to the catalog is 220 kg. The engine number 1UZ-FE is located between the cylinder heads. Ignition system failures. The power unit has exemplary reliability and has no weak points. The only thing that is regularly discussed on forums are problems with the ignition system, with frequent complaints about the limited lifespan of spark plugs and some difficulties in replacing them. Timing belt breakage. The procedure for replacing the timing belt is complex and expensive, so many people continue driving until the last moment. It is worth remembering that in the updated engine with VVT-i system, valve bending can occur in case of belt breakage. Minor breakdowns. Among the minor problems of this engine, we can only mention frequent oil leaks from seals and an unreliable water pump, which is dependent on the timing belt, and its failure can be costly for you.