head gasket

Hi everyone, I'm new to the forum and have a quick question. I have a 1993 GMC Sierra (1/2 Ton 4wd -- 350 -- 190k miles) and recently when I turn the pickup over in the morning I'm greeted by a hard idle and clear/whitish exhaust. About a week ago, the pickup was overheating, so I changed out...

Was checking my oil the other day and noticed signs of a blown head gasket on the dipstick. The oil/ water combination of a mocha colored substance on the dipstick. I changed the oil the next morning w/o starting the motor to see if there was any water/ oil separation in the oil pan. There...