Why is there a clicking sound Under my Car Hood after I..?
Why is there a clicking sound Under my Car Hood after I..? If you still hear howling after the car is turned off, it may be noise from the pressure cap of the car radiator. The cover is designed to release excess heat from the overheated coolant, but sometimes the seal of the rubber gasket of the part breaks, and air leaks. Hydraulic valve lifter failure is a common problem that will rattle when idle. Why do I hear a howling sound in my car? The constant circulation of air and coolant in a car engine can cause small cracks...