A: Judge whether the cylinder gasket is well sealed, you should open the radiator cover, fill the radiator with cooling water, and keep the engine running at medium speed.At this time ,to observe the internal situation of the radiator, if there is a continuous flow of air bubbles, if it has,it indicated it is a poor seal cylinder gasket.The more air bubbles, the more serious the air leakage.When the cylinder gasket is seriously damaged, you can lubricate around the joint between the head and the block,then observe the joint, if there are bubbles out of the cylinder gasket,it means the gaskets is failed, and should be replaced with a new cylinder gasket.
