It is because the water temperature in the water tank is high after the engine is started, resulting in holes in the aluminum foil of the water tank. The waterproof effect of general glue is not ideal, and it can be repaired with similar plastic hot melt adhesive when conditions permit. You can also fix the small hole with hot melt adhesive first, then polish the water tank hole and a piece of plastic with sandpaper, and then use it quickly after bonding, pressing and cooling with hot melt adhesive. Because the water tank is made of aluminum, if it is not broken, it can be repaired by aluminum welding or brazing, and it can be repaired around 80 yuan.

processing method

When there is a hole in the water tank, it can be bonded with polymer glue, which can solve the urgent need. In fact, the way to solve the water tank leakage once and for all is welding. If the water tank is made of copper, the ultra-thin flat tube or root of the water tank can be welded with ultra-low temperature M5 1 solder and M5 1-F active flux.

If it is an aluminum water tank, we can use WE53 or Q303 low-temperature brazing for welding. If you don't have a plastic spray gun, you can buy a tube of morning light all-purpose glue and apply it. After a few hours, it can be hardened and bonded without any problems.