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Saturday, July 20, 2013

high crankcase pressure because of rings

Hi,I have a 1995 Pontiac Gran Prix with a 3.1 engine with 127.000 miles on it.I just got it out of the shop having some work done on it and I noticed on the bill, high crankcase pressure because of rings, the car doesn't smoke or use oil, is this something to worry about?


  1. What this is telling you is that your compression is low due to wear on the compression rings. This is caused by a few thing with the main problem being Ethanol in Gasoline causing a higher internal combustion heat AND a loss of lubricant to the cylinder walls which not only lubricates the walls and rings but also lowers the temp of the combustion chamber. I hope that helps describe what is going on inside your engine.

  2. If you would like to reduce that Blow By here's a Secret from this Old Mechanic. Change Your Oil!!! Do NOT use 5W30 or 10W30!!! Use a Straight Weight Oil such as SAE30 Non Detergent and Lucas Engine Treatment (it's like Honey). Be sure to change that Oil Filter too. Want while your under there take a grease gun to those fittings on your ball joints and tie rod ends and check your CV boots for tears and leaks.

  3. ethanol eats up the ¼" plastic lines in chain saws, leaf blowers, weed wackers, etc., and in vehicles causes less gas mileage...

  4. Too all of you smarties!
    You missed one MAJOR item.
    Make Sure that your PCV Valve is working AND THAT THE LINE FROM IT TO THE MANIFOLD IS NOT BLOCKED WITH CARBON!!!!!!!!!!!!!!!
    I have had at least 5 cars I bought due to High oil Consumption or BLOWING OIL out of the DIP TUBE.
    Only problem found was the PCV Valve and or the Manifold to PCV line being blocked.

    Hope this helps.

  5. oil is needed , this is essential