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1998 BMW 740i Question: 1998 bmw 740I

 

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joey dee, North Hollywood, CA, October 13, 2009, 15:49
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Please help. i replaced water pump,thermostat,some hoses and where you put antifreeze in that container (sorry dont know what is called) but every morning i need to add water. what could be the problem other than th radiator? I checked everywhere. Also where you replace the motor oil, there is a lot of oil coming out of it. Please help

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  • Answer #1

    lawrenceg October 13, 2009, 16:16
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    Do you see engine coolant leaking externally? Is the engine overheating or smoking from the exhaust" Is the check engine light on?
    The reason I ask is that this sounds like you might have a leaking head gasket or other engine damage, but it's hard to know without seeing the vehicle and running some tests. If you can anser those questions I may be able to give some more information.

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    patrick mannion from Greg Solow's Engine Room, October 13, 2009, 16:24
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    The most accurate way to test for a blown head gasket on a gasoline engine is to test for the presence of carbon monoxide in the cooling system. Snap-On, Matco (part # CO 2000), and Napa sell a tool to check to carry out this test. Another link to a supplier of this tool is http://www.etoolcart.com/combustion-leak-detector-lis7550.... Carbon Monoxide is only present if there is a blown head gasket or cracked cylinder head. http://www.arrowheadradiator.com/head_gasket_or_combustio... I think the napa part number 700-1006. http://www.blockchek.com/instructions.htm . Signs of a blown head gasket are coolant loss (frequently have to top up the coolant level of the engine without seeing an obvious leak), experiencing over heating or rough engine running or the presence of white sweet smelling steam from the exhaust. A badly blown head gasket may allow engine coolant and oil to mix.

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