ive got a 2009 Volvo that was hydralocked. found cylinder head cracked between exhausrt valve seat and injector tip bore. A smoking gun right.? replace cylinder head with a reman provided by customer that was sourced at an aftermarket reman shop. honestly, considering the customer, there is actually no telling where t came from. it does have new valve assemblies and new cam bushings that I had to dress up against my will due to poor/ careless installation. its not my truck right. I'm a perfectionist and believe in following the manual on any applications, so after I got it put together and it ran for ten minutes the like I never touched the truck it did the same thing. after turning it off and tried to start it hydra locked again. someone please offer som insight. thanks

George
Technician
Patriot Truck & Trailer
Texarkana, Arkansas, USA