YEP... 'head comes off'.
Before you do, check the cam timing just for giggles, especially if all 4 cylinders are getting bent.
If just one, probably not necessary.
You may have a huge buildup of carbon on the piston tops, valves, or other foreign object causing binding.. Does the turbo 'sound' ok??
Post pics!
4cylinder diesel motor clatter-bent push rods-ok ?
