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Thread: 350 chevy coolant leak head gasket or intake

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  1. #1
    Mitsu booster
    Join Date
    Dec 2008
    Location
    Lowell MI
    Posts
    43

    350 chevy coolant leak. Head or intake gasket?

    91 chevy 350 tbi. Buddy thought it was an intake manifold gasket so, he bought one to have me do it. Well, I say its possible that it could be a small head gasket leak.

    I let her idle, gave it some revs and the temp gradually shoots up 213*. Shut her off, looked under the truck and there's a small puddle on the ground passenger side towards the rear of the engine. Dip stick looks/smells like normal oil. Pulled the valve cover off and sure enough, chocolate milk. I even looked/smelled the exhaust for the hell of it. I couldn't smell coolant and I couldn't see any color change, just very white.

    EDIT: I did 2 more tests. The coolant in the rad has a constant bubbling. I think this next test indiactes if the intake manifold gasket is bad. I let the engine idle and then removed the oil cap to see if the idle changes and it does not. I think the head gasket is partially blown and the coolant is trickling down the passenger side head. But, then why would I have coolant mixed in my head and not on the dipstick?
    Last edited by menace2society; 05-02-2009 at 08:35 PM.

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