Master the Fix How to Repair a Radiator Cap That's Losing Pressure

Open the hood, check that your radiator is fully filled by opening the cap. Then tighten the cap and run the engine until it reaches operating ... ... Repair: https://goo.gl/XBe4Sh ▻ Missing Wheel Lock: https ... pressure in the coolant system and how to fix it. Pressure build up ... best to test your cap and radiator with a pressure tester. pump up cap separately from radiator. see what psi cap lets off. pump up radiator ... What I suspect is the neck may be too long on your bottle for the cap you are using. This is a common problem with oem bottles as they are euro necks and caps ... Confirm the rim is polished clean. Unlike for Miata thermostats, I find aftermarket radiator caps OK. Check the hose to the radiator's external ... You must change your radiator cap if it broken, otherwise It won't hold the pressure and more coolant will overflow into overflow bottle and ... The cap should vent at 16psi. When it's cold there shouldn't be any pressure under there as it should be linked to your overflow bottle to vent excess pressure ... 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 ... With modern radiator caps you get half a twist and it dumps the pressure to the overflow tank. After that half a twist you have to push it down ... 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 ...