Coolant Bottle expends 2004 d12d

Discussion in 'Volvo Forum' started by 05vnl670, Oct 4, 2014.

  1. 05vnl670

    05vnl670 Light Load Member

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    Feb 17, 2013
    0
    Somone i know has a 2004 vnl with d12, when you start the truck cold after about 20 minutes of idling the coolant bootle expends and you can see that top of the is expending looking like buble and the radiator hoses are very hard. From what i understand the blue cap on side is pressure cap and black one is only to fill. The blue cap was replaced with volvo part problem is still there, from mine understanding the cap should relase exesive pressure. Any sugestions?
     
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  3. JohnP3

    JohnP3 Road Train Member

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    Feb 21, 2010
    Rock Creek B.C. Canada
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    You want to go to the diesel garage site and in the search section, type handy links, go down the list to the bottle test and do the complete test it will help you know the problem. do the COMPLETE TEST not just parts of it. It sound like a head gasket but you want to know for sure.
    Just a thought!
     
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