An engine teardown of the popular 2AZ-FE unit will show why it may fail ... Toyota's go-to straight-four had an aluminum engine block and an aluminum cylinder head, which had dual overhead ...

However, the car is due for a short-block engine replacement to solve an oil-burning issue. The car goes through a quart roughly every 150 miles. The 2AZ-FE has been known to burn oil, due to a ...

Many owners of the 2006-2008 third-generation RAV4s, which had the 2.4-liter 2AZ FE engine, complained about how frequently they had to replace their oil. Since this might be a piston problem ...