How do you check motor for bent valves?

To check a motor for bent valves, start by performing a compression test on each cylinder; significantly lower readings indicate potential valve issues. Next, perform a leak-down test to assess where the air is escaping, which can help pinpoint bent valves. Lastly, visually inspect the valve train and cylinder head for damage by removing the cylinder head if necessary. If bent valves are confirmed, they will need to be replaced.