Unlock the Secrets of Radiator Cap Repair Regaining Pressure Control

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 ... No, the whole idea of the pressure tester is so you can test the system COLD. Hook the tester to the radiator, pump it up, and watch it hold ... WHAT CAUSES PRESSURE AND AIR IN THE COOLING SYSTEM AND OVERFLOW TANK ON CHEVROLET CRUZE CHEVY SONIC. Electrical Car Repair LIVE•731K views · 15 ... There is no valve in the radiator cap that permits only gases or vapors to pass and not liquids. If the cap is not sealing, there is a pathway ... It keeps the coolant locked down but it the heat and pressure raise to high it over comes the spring in the cap to allow the pressure out the ... If you cap is leaking, it won't build as much pressure and the boiling point will be lower. If it were me, I would just replace the cap and see ... Make sure the face where the gasket goes is smooth(mite need to light sandngi)Then I'd use a pressure test cap and get it up to pressure,then ... Then, you work on things and lean n the hose shoving it into the bolt head. Since that is outside the cap, a pressure test won't find it as a ... Coolant Leak Fix "How to" The Radiator Cap. 49K ... Doing This Will Prevent Overheating & Keep Your Car's Cooling System Working Like New. If you can get it clean and dry you can temporarily fix it using two part steel epoxy putty. Mix the putty well and roughen the area with coarse ...