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Crankcase pressure.Turbo 850

posted by  someone claiming to be Android on  Wed Jun 25 15:07 CST 2003 [RELATED]

My vehicle is having a positive crankcase pressure problem. My car does not have a PCV or a flame trap, how is it controlled. Is there a solenoid and what is the fix?????
thank you








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    Crankcase pressure.Turbo 850

    posted by  someone claiming to be Frank on  Thu Jun 26 00:26 CST 2003 [RELATED]

    Turbo engines do not have flame traps BUT do have a PCV system. Start by making sure that the PCV hose/ beather box isn't clogged but that'd be unusual. One can remove the upper hose (under top plastic cover) and blow through it to check.
    The next step is to find a shop with a cylinder leak-down tester as that will determine the health of your piston rings. I'd suspect that you have bad rings, termed "blow-by" (cause of high crankcase pressure).








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      Crankcase pressure.Turbo 850

      posted by  someone claiming to be mark sloo on  Fri Jun 27 04:09 CST 2003 [RELATED]

      I'm just interested in learning more about this. How does blow by or bad piston rings cause high crankcase pressure??

      Mark








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    Crankcase pressure.Turbo 850

    posted by  danielflading on  Wed Jun 25 15:56 CST 2003
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    my 244 turbo had a oil trap that had to be kept clean. i think the 850 has the same thing. has a vacume line that gets filled with carbon and causes the pressure to build in the crankcase.

    have you tried volvospeed.com?

    Dan
    97 850 glt turbo






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