Cooling System Masterclass How to Diagnose and Fix a Radiator Cap Pressure Issue

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 ... It's important to choose the right cap as the pressure will be individual to your system. ... Typically you won't need to replace a radiator cap ... if your cap isn't holding pressure take off the cap (Make sure your engine is cooled and de-pressurized first!) and take a pair of needle nose ... My radiator cap is original, have had no problem in 3 years, WITH coolant. ... Changing the radiator cap won't make a bit of difference. Either ... In normal use, the pressure will never be anywhere near 1.4Bar, much less 2.0. 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 ... 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 ... A broken radiator cap can decrease the pressure in the coolant system, leading to some of the coolant becoming vapour and causing seals, gaskets, hoses and ... loose belt, loose hose clamp, strainer lid not tight.... If you still have the old cap and pressure tester, you can test the cap and see where ... Here I show how to test a radiator cap without false results. A diagnostic tech has the tools and knowledge to prove their work, not just ...