Question about 2004 Chevrolet Impala

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Lost all coolant on 2004 Impala under exhaust manifold

My nephew was driving and lost heat and all the coolant was streaming out under exhaust manifold

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This sounds like a Head Gasket has Blown it sounds like the engine was running hot prior to this event. The exhaust manifold will not leak water or coolant Period. First you must check your engine oil and see if it it milky white if it is this is bad it means coolant has entered your oil threw a crack or blown head gasket.Freeze plugs do at time rupture but i do not think this is your problem.If no milky oil is present do the following. If the engine cranks refill the coolant to full crank the engine first time with the radiator cap on. What we are doing is looking for a simple leak now. Use a flashlight while it is running to spot the area of the leak. When spotted note if it is in a seam between the head and the motor block. if so Head gasket may be your culprit. If no it may be a simple hose disconnected or blown out. If you need more help please get back to me. Please rate my comment

Posted on Apr 08, 2012

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The exhaust manifold gasket probably needs to be replaced although it could be a freeze plug that blew out. A freeze plug is a disk that goes in a round hole on the side of the block. If the water is not coming out of a round hold but rather a crack between the exhaust manifold and the block you will likely need to remove the manifold and replace the gasket.

Posted on Jan 22, 2009

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It sounds like you lost the head gasket...

Posted on Jan 22, 2009

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