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im hopeing someone can help ive got a evo 4 that is blowing the dip stick out i have replaced the o rings .I have replaced the oil and filter there was no sign of any forn matterial in the oil or filter.Is there any way a blocked breather or hose to the oil cooler would cause this .Ive also done a compretion test all cylinders r the same ..I would be thankfull for any help cheers:wallbang:
 

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I does happen on some cars from time to time the best thing to do would be to do a leakdown test as that will pinpoint if u have a lot of piston blowbye

U can also check to see if all the breathers are ok and not blocked and that the pcv valve is working correctly
 
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