steam in exhaust

95 Vortec V6 making steam in exhaust. How can I test to decide if the leak is from the head gasket, or the intake manifold gasket?
Reply to
"(oYo)"
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Air bubbles in coolant tank while it is still cold. As well as high pressure in the radiator hoses. Many times if you have a head gasket leak that allows coolant in the exhaust will also allow exhaust in your radiator. ""(oYo)""

Reply to
shields

Hi, Thanks Doc. The weather was sunny/warm. the engine was idling for about ten minutes when I found a leaky heater core and thought oh goodie!. So I bypassed the heater core, and let the engine idle for a long long time hoping to also charge the battery. Steam was lightly exhausting enough to make my hand moist. water would dribble slowly from the pipe.

There is no water in the oil, and there appears to be clean water in the rad although it dissapears.

I wish I had better tools like a leakdown tester.

Is the intake leaking a more common problem?

Reply to
"(oYo)"

Well , I didnt really notice a sweet smell, and the water was clear. One thing, if I shut it off for a few minutes and try to restart, it is extra difficult for the starter to crank over untill it gets one or two revolutions. then it cranks over easier for a while before it starts back up. (almost like a hydraulic effect when a cylinder has fluid in it.)

Reply to
"(oYo)"

Reply to
"Doc"

oYo says " There is no water in the oil, and there appears to be clean water in the rad although it dissapears."

------------------------------------------------------ If the water in the radiator is "dissapearing" I would suggest that there is probably a leak in the head or intake gasket. A simple compression tester might help,but if you've got steamy exhaust,hard initial cranking,and water disappearing,you've got a leaking gasket or a crack. If you are using "clean water" ie.without coolant additive,you won't get a sweet smell anyway. Take out the plugs and check their condition then check compression.

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Reply to
Brian Orion

"'(oYo)'" wrote: > 95 Vortec V6 making steam in exhaust. How can I test to decide > if the leak > is from the head gasket, or the intake manifold gasket?

this can take a while, but it will tell you if it is a head gasket. do a compression test on all of the cylinders. if you dont want to do that, try this. with most head gasket problems (not all) you will have at least one "dead" cylinder. one by one, WITH A PAIR OF INSULATED PLIERS OR SPARK PLUG WIRE PLIERS remove the spark plug wires from the spark plug. if the engine speed changes, that cylinder is ok. if not, there is your "dead" cylinder.

Reply to
diamondjim

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