I think I need a new pcv check valve..my dipstick is blowing out after my rebuild, its not spitting oil just blowing out every now and then.. Compression is good and I have the new intake mani gasket

 

dealerships have them...it wasnt that much either but who knows if the price changed or not

 

Ok thats what its gotta be thats making it blow out..do you think a catch can or valve cover breather would be good to fix it??

 

a catch can would prolly work...i never ran one but when i get back from this deployment ill b buying one just to release sum pressure.. idk of to many ppl running breathers so i cant really chime in..i would think it lets unmeasured air into your engine but i could be wrong

 

Yea thats what I was worried about

 

im not an expert tho so dont quote me on that...i do plan on puttin a catch can on mine jus cuz i got alot going thru mine so i need to vent sum of that pressure

 

I dont know what the hell makes my car do it

 

jus to much pressure im guessing...vent it and u should be alright

 

Intake gasket or Pcv since ure compression is 100%

 

too much pressure. Catch can will solve it from spraying everywhere. Happened to me a few weeks ago

 

Oil has only came out maybe once..damn cobalts lol

 

I can get this for 20 bucks off a friend OCC-100CH Oil Catch Tank - Universal - Chrome | NRG Innovations
Think it would do fine??

 

There is a sticky on the dipstick solution got a lot people that have come up with solutions

 

did you do a leak down test

a caatch can or a breather wont fix it if you have other problems

compression dont mean squat you can still pass a comp test but fail a leak down test

volvs if you think the check vakve is the problem just plug the port in the head and get a -10 weld on bung for the valve cover and the your air intake and then put a air/oil seperator inline dont buy a cheap one

Moroso 85477 - Moroso Air/Oil Separator Tanks - Overview - SummitRacing.com

 

I haven't done a leakdown and I can get the can I posted for 20$

 

you need to do a leak down and you get what you pay for

 

I will and its used and its a buddy..its 100$ catch can

 

Agreed. Cheap catch cans barely work. You won't get a decent quality catch can for $100. Here's an interesting document that covers several different types of catch can designs and filtering media along with their advantages and disadvantages. This document is for a c5 corvette, but there is a lot of good information in here regarding catch cans that could be applied anywhere.

http://www.conceptualpolymer.com/PCV...oval%20102.pdf

 

you want to use a air/oil seperator as it will filter out any oil and mostiure before it heads back into the engine

 

Are you kidding me? Really? Compression dont mean **** but leakdown test does. Hmmm. Ok, I highly highly doubt his leakdown will be high considering engine was just rebuilt and also compression is great. If leak down was bad his compression would be a tad bit lower. Since there wouldnt be a good seal.

Understand im not a idiot, I understand. So saying somthing don't mean **** is obviously wrong. Ecspecially when it does mean ****.

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an engine can pass a comp test and still fail a leakdown test i dosent matter how fresh the engine is with all the automotive education you have had you should know this

 

alright im going to chime in on this. What mrbelvedere said it correct james. Ive seen it more than once in the auto field. When i was running my 12 flat 1/4 mile every now and then under back to back pulls, the dipstick would come up a **** hair. only on the track under hard pulls with alot of load. I did a compression test as well as a leakdown test and everything was fine. I got a breather for the oil cap from steve, to install for when im running down the track. Last passes i made i ran faster and no more dipstick coming up. As far as the vent causing a lean condition thats a load of crap because when the vent is doing its job its under positive pressure (boost) anyways. They only time it MAY cause an issue is at idle under vacuum i have tested the theory and it simply does not cause a lean condition. Just throwing my results out there and what worked for me.

(i will be doing a catch can/ seperator this was just a quick fix that has worked for the track)

 

Yes I know this. But in aspects of the charaistics of what's going on. its not the leak down .. only happens when he gets on it when cold! Not warm .. I'm not a idiot.. what i am saying is usually with a bad leak down, there will be a sign of it within compression.. meaning lower on the cylinders. Op stated 190 compression , and if compression is that good and comes within the correct revolutions then i dont see it being leak down. Now it still can be. I understand, ive seen it before. but my point is, I dont see it being that. Which I told him to do a leak down before as well. Well before he made the thread.

 

well no offense to the op but hes a ******* for getting on it when its cold. If he just did a rebuild hes still seating the rings and if its pooping up on a cold wot pull then the rings havent sealed yet completely/expanded. Have him do a comp test when cold then. People need to wait until the coolant temp is at least 100 degrees before beating on their car