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Me and my friend took his jet (455 olds) out today and it ran good all day. While we were comming back in he was hot on the throttle and I looked back an noticed oil everywhere. We shut the motor down to look. We found oil all over the side where the breather was located. Then we looked at the other side where the pcv was located an it was dry and no oil. Would all the oil come from the breather? What would cause this to happen? Can he run 2 pcv's to replace the breather filter? Someone please help. What should we do?
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hopefully it's not something big but you might want to do a compression test.
We had someone experience the exact same thing last year with an Olds and it turned out to be a hole in a piston.
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most likely the valve cover filled with oil and out it comes all over the place. check your drain holes!
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396,I had the same problem with mine.I put 2 pcv's and it took care of the problem.
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That was the answer to my question. thanks searssears1. I will also tell him to do a compression test.
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Yeah but see that took care of it leaking out of the boat but may not have taken care of the problem. Olds have problems with oil. You might want to talk to someone that knows a little more about olds motors. I bet there is something up here and it may cause issues down the road.
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That's a good point,I have 3/16 restrictors in mine.But it could be something more to it.
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searssears1, you say you run two pcv? Is that one on each valve cover, and with a tee on the vacuum line, or two ports? My olds leaks like about a cup of oil each time I go out, so this work. Only my carb doesn't have any vacuum port, so where would I put a vacuum fitting(s)?
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Its my buddies boat and I will pass the info along.Although another told me that the rings might be going out. I will inform my friend.
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cncer691,Yes there is one on each fwd end of the valve covers.And I have a breather on each valve cover aft end.
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