Revitalize Your Radiator Expert Tips for Fixing Pressure-Losing Caps

However, it's sometimes caused by a damaged radiator hose that causes a vacuum effect. Don't drive with a leaking radiator cap, even when your ... From a cooling perspective it won't make much difference, plus the system only sees boiling temperature* when there is an overheating problem. Replace the coolant cap. Not that expensive and should solve your problem. I had the same problem and the cap solved it. The radiator cap seals are damaged. The radiator cap valve is stuck. The radiator cap doesn't hold pressure. Common Bad Radiator Cap Symptoms. Replacing a bad radiator cap is a simple process, but the best and safest way to replace or repair it is to head to a professional service center like the one ... 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 ... Is YOUR coolant going down but NO leak evident, no puddles etc❓ Classic bad radiator cap signs❗ How to fix exhaust heat shield rattle: ... Clue #5- Damaged radiator hose ... A defective radiator cap can build enough pressure in the cooling system, bursting the radiator hose. If this ... To make a no-pressure cap, you want to remove the inner seal, and fully tighten the cap so the outer seal keeps the coolant in the radiator and the overflow ... Remove bleed screw and expansion tank cap, add coolant EXTREMELY SLOWLY to block through upper radiator hose until full, then flip hose around ...