Re: 99 5.3l in my 70... good engine¿
unless it's abnormal amount of water coming out the tail pipe, most all of the newer engines today and the catalyst for pollution controls make lots of condensation, so unless we are talking ounces (or worse) I wouldn't worry about it.otherwise, I'd have your cooling system pressure tested, keep an eye on the oil condition, if you see milky residue on the dipstick or on the inside of the fill cap, I'd suspect a blown head gasket. you can have a local garage check your cooling system with a "Sniffer" emiisions tester, if the CO or HC readings appear, that's a dead ringer for a head gasket getting ready to blow. HTH,
Ben
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