Tackling Radiator Cap Pressure Issues A Step-by-Step Resolution

You could have cross threaded the cap a little when you put it on, so if you replace the cap and it is still hard to screw on you may have to ... The radiator cap seals are damaged. The radiator cap valve is stuck. The radiator cap doesn't hold pressure. Common Bad Radiator Cap Symptoms. 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 ... You may see bubbles rising in the pressure tank. There won't be gases trapped in the radiator. . With a developing fire ring leak,after driving awhile and while ... The radiator cap, however, is supposed to hold pressure and release when over the set pressure (~15 psi) and can be the cause of overheating if it doesn't hold ... 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 ... 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 ... Usually what happens is they won't hold pressure. It is possible that the vent is plugged up. But there only suppose to vent in case of a ... Replace the coolant cap. Not that expensive and should solve your problem. I had the same problem and the cap solved it. 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 ...