Ultimate Radiator Cap Repair Guide Fix Pressure Issues Like a Pro

The number represents the pounds of pressure it was originally designed to hold in the radiator. ... Won't hurt a thing, almost any car ... From a cooling perspective it won't make much difference, plus the system only sees boiling temperature* when there is an overheating problem. 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 ... It means your system is fully sealed and not leaking anywhere. I'd pop the cap however and make sure your radiator is filled right to the bottom ... Before you sign off on the radiator cap being the problem, check to make sure that your overflow tube isn't clogged. If it is, the pressure buildup will force ... Release Pressure – Before removing the radiator cap, release any remaining pressure in the cooling system. Cover the cap with a towel or thick cloth to protect ... If the cap is stuck, it will cause a collapsed hose when cool. If any doubt replace the cap. I don't think you have a head gasket problem. The ... Confirm the rim is polished clean. Unlike for Miata thermostats, I find aftermarket radiator caps OK. Check the hose to the radiator's external ... Replace the coolant cap. Not that expensive and should solve your problem. I had the same problem and the cap solved it. The rubber just won't hold it anymore. If it's older than 5, grab a tester or replace it. Once they fully loose pressure than you are in real ...