I’m new to the forum but I’m counting on your help. I apologize in advance for my English, which is very weak.
I have a problem, because my engine after renovation is still warming up.
Exhaust gases get into the cooling system. The head is funcional. It was checked in two plants. I used a new composite gasket head and new head bolts. Tightened with a torque wrench according to the torque. The surface of the engine block and head were smoothed out. After putting on the head the problem still occurs. There are no other symptoms of damage to the gasket.
I am asking for guidance what may be the reason and how to deal with it.