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bolt or heli

  1. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi, I have a 1998 528i Touring, After warping the head and getting it replaced at a cost of 1800 euros, The head gasket has been replaced, and 6 of the bolt holes needed heli coiling. Now I have had everything put back, and replaced water pump, there is a puffing of air coming from the rear of...
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