2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

crankcase pressure

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Old Jan 18, 2009 | 06:46 PM
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10 pounds sounds so nasty
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crankcase pressure

ok i think i atleast solved one problem. now i know this sounds dumb or newbish but couldent the lack of an o-ring in the omp cause crankcase pressure or blowby ? also where can i get the o-ring ?
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Old Jan 18, 2009 | 07:00 PM
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Nope. Too much crankcase pressure is usually caused by a tired engine that doesn't seal well internally. The o-ring can probably be found at mazdatrix.com
Are you atmospherically venting your crankcase?
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Old Jan 18, 2009 | 07:56 PM
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10 pounds sounds so nasty
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the engine is fresh rebuild and i have air comming out of the nipple on the oil filler tube.
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Old Jan 19, 2009 | 12:17 AM
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who rebuilt it and how much air is coming out?
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Old Jan 19, 2009 | 10:09 AM
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10 pounds sounds so nasty
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i rebuilt it, its not alot of air, just blows as the engine turns. however i dont rember if i got the o-ring for the omp and yesterday we noticed air bubbles from the omp and thats what got me thinking cause if its pulling air from down there its got to escape from somewhere eles right ?
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Old Jan 19, 2009 | 06:04 PM
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10 pounds sounds so nasty
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replaced the omp o-ring it was a total loss but its al good now. still have pressure comming out of the oil filler nipple dont know why ? not getting oil pressure either but that problem is answered i didnt prime the oil pump but it should be fixed by the weekend. could that have somthing to do with the pressure ?
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Old Jan 19, 2009 | 08:14 PM
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10 pounds sounds so nasty
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Originally Posted by 1Revvin7
Are you atmospherically venting your crankcase?
no how do i do that ?
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