Time to check for a head gasket leak or a cracked head- - - -water pressure, air pressure, or a "block test kit" which uses an indicator liquid to detect combustion gases in the cooling system.

www.harborfreight.com/combustion-leak-detector-64814.html?

The test fluid sold by NAPA seems to work better than the supposedly same stuff sourced elsewhere, even O'Reilly's.

Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!