Reply to "Radiator cap TOP gasket leak, pressure"

lf-tp2511Member

quote:
The other (upper that seals at the top of the neck) SHOULD hold to a substantially higher pressure point for safety reasons

Why?

Once the lower one unseals at 16 pounds, the system starts to vent that 16 pounds of pressure into the overflow hose that carries the coolant into the overflow tank.

As the system pressure is thus vented, it will not continue to climb above the 16 pound point.

So the upper gasket sees no more than that 16 pounds, and only for an instant.

So why does it not sealing above 22 pounds worry you?

I am surely no expert on cooling systems, and you did mention you had been to a radiator shop.

Did they think the top gasket failure at 22 pounds was a problem?

I am very open to learning why what I see as a non-issue, is seen as a problem by you - and the radiator shop?

Please explain so I can get my head wrapped around something I may be missing.

Thanks,

Larry

3/4/1010:51 AM

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