BENT VALVES in the head: tell me how that happens.... - Toyota Yaris Forums

YarisSedan · 02-17-2009, 01:54 PM

Usually when this happens the computer records the live data. It will record engine rpm and vehicle speed in freeze frame. Dealer can see how fast you were going and what rpms. If you are above redline and shows you going 100mph and engine coolant temeprature shows the vehicle isnt even warmed up then dealer is going to say sorry bozo.

I mean usual way to bend valves is when you have the piston colliding with the valves due to incorrect timing or in most cases cars that run timing belts and the belt brakes. I have seen a mechanic install a timing chain wrong once engine ran for a few seconds and you hear this clack clack clack. removed the cylinder head and the piston snapped the valve off turned it upside down and it punctured a hole through the piston head.

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02-17-2009, 01:54 PM	#22
YarisSedan Drives: 08 Yaris Sedan Join Date: Oct 2008 Location: California - Bay Area Posts: 2,773	Usually when this happens the computer records the live data. It will record engine rpm and vehicle speed in freeze frame. Dealer can see how fast you were going and what rpms. If you are above redline and shows you going 100mph and engine coolant temeprature shows the vehicle isnt even warmed up then dealer is going to say sorry bozo. I mean usual way to bend valves is when you have the piston colliding with the valves due to incorrect timing or in most cases cars that run timing belts and the belt brakes. I have seen a mechanic install a timing chain wrong once engine ran for a few seconds and you hear this clack clack clack. removed the cylinder head and the piston snapped the valve off turned it upside down and it punctured a hole through the piston head.