No pressure on coolant overflow res. cap

nikm7 · #1 (**permalink**) 11-02-2009, 11:48 AM

I would think that the cap would be under pressure? 12-16 psi cap just comes off while the engine is hot. any suggestions.

cecilt · #2 (**permalink**) 11-02-2009, 12:02 PM

I've taken mine off hot several times in the last 2 weeks while flushing the sytem. It will release some air but it does not overflow or shoot out of the cap like some vehicles will do.

alloro · #3 (**permalink**) 11-03-2009, 11:36 AM

Quote:

Originally Posted by nikm7

12-16 psi cap just comes off while the engine is hot. any suggestions.

You have a leak in the system which is preventing pressure from building up.