The Toyota 2GR is among the most reliable engines ever made, but that doesn't mean it's immune from failure. YouTube channel speedkar99 sourced a broken engine from a Lexus ES 350 to see why such a famously dependable engine went bust.
The presenter starts by using a borescope to inspect the condition of the 3.5-liter V6 without tearing it down. He discovered that the intake valves were bent, possibly colliding with the pistons. The valve cover was then removed to gain access to the camshaft assembly.
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