Empower Your Vehicle How to Handle a Radiator Cap That Can't Hold Pressure

The number represents the pounds of pressure it was originally designed to hold in the radiator. ... Won't hurt a thing, almost any car ... Usually what happens is they won't hold pressure. It is possible that the vent is plugged up. But there only suppose to vent in case of a ... Check THIS Easy Fix ... keep topping off my coolant it was evaporating through my old rusty radiator cap … went to Auto Zone for a 20 PSI cap ... No nosebleed yet? According to Ideal Gas Law (PV=nRT), for as long as you keep the volume (V) of the coolant constant, you ... Header tank cap or radiator cap is faulty ... The car coolant header tank is equipped with a pressure release valve in the filler cap, intended to release coolant ... Yes, the radiator cap needs to hold pressure or the coolant won't cool very well. ... r/MechanicAdvice - Need a quick fix on my coolant reservoir ... Maybe try spraying some soapy water around the connection of the tester to the radiator. Another thought is to put the cap back on and run it up ... The cap you'll notice a spring and gasket. When pressure is below the rating it will stay closed and allow the coolant to cycle but as it heats ... With everything going on in the world what is the problem? It's an OPEN cooling system. It's going to suck and pull must I put up a pic of " ... You could have cross threaded the cap a little when you put it on, so if you replace the cap and it is still hard to screw on you may have to ...