Empowering You to Fix a Radiator Cap That's Losing Pressure

to replace your bad radiator cap. You will also learn how a radiator cap ... Doing This Will Prevent Overheating & Keep Your Car's Cooling System ... SRPWR wrote: Inside the filler neck on the rad. There is a lip about 3/4 inch down that the rubber O ring on the rad cap sits on. My car would ... I'd try a new cap first. If the pressure goes over 15 pounds it should vent through the side cap, not the top. ... won't be long until those OE radiator caps are gone as well. ... When the radiator cap can't hold 18 lbs. of pressure the radiator ... The number represents the pounds of pressure it was originally designed to hold in the radiator. ... Won't hurt a thing, almost any car ... 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 ... 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 ... The cap could be bad. It should hold 16 psi. If not that might explain your problem. Have it tested at a radiator shop. If it is good, it might be head gaskets. 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 ... 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 ...