crankcase pressure/oil leak

[DsM KiD4]

ok ill make this short as possible because everyone hates reading long posts but heres whats happening......

dipstick kept blowing off so i replaced my valve cover breather filter because it was dirty.
cracked my stock valve cover because i over tightend a bolt, replaced it with a 2g valve cover.

now last nite i was running my car and i popped my hood just to check up on things and there was oil EVERYWHERE, i mean everywhere. on top of the valve cover, on the thermostat housing, on the tranny, on the power steering pump, on the alternator, on the hood, ect...

ok so im almost 100% positive its comin out of the oil cap, ive switched oil caps to see if maybe mine was leaky but same thing happend. today i checked my pcv valve and the plunger moves freely, and it does. I even started the car and put my finger to the valve and it does have vacuum.

So what should i do next to figure this out? a compression test??? im pretty much lost now so if any of you could point me in the right direction for diagnosing this i would appreciate it. thanks in advance

 

[telnut]

PCV are known to fail, cleaning sometimes does not work, replace with OEM valve, not aftermarket, they will leak brand new. Compression test would not be a bad idea just to see where cylinder compression is. If compression pressure okay, then do leak down test. See tech articles in search. Double check valve cover for leaks, cam plugs will leak, also o ring at cas, I have seen lots of cam seals blow when pcv sticks or does not seal. Inspect valve cover closely they have been known to crack. I have replace two valve covers on my 92 and one on my 91.

Telnut

 

[DsM KiD4]

so even if the plunger on the pcv valve moves freely it can still be defective?? what is a cam plug? are u talking about the half moons that are on the valve cover?

 

[telnut]

yes even if it moves freely it will not seal when under boost, cam plugs are the half moons and are actually on the head, Crank angle sensor (cas) has o-ring that will break and leak

 

[DsM KiD4]

ok im going to compression test and get a new pcv valve. wheres the cheapest place to get an oem factory pcv valve, or do i have to go to the dealer?

 

[BUCK]

Just in case FYI quite often the "OIL EVERYWHERE" Posts turn out to be a loose Oil Filter from a crushed Water to Oil Cooler.

 

[DsM KiD4]

i have a 1990 oil filter housing with an air cooler so i know it aint that. I also noticed my valve cover breather filter blowing out some smoke when i would rev the engine high. would a catchcan eliminate this pressure? also, other than a bad pcv valve or worn piston rings, what can cause this pressure? does it come to a point when a pcv valve cant keep up with higher boost pressure or hp? basically im about to do a compression test and if the results are ok then what else can it be besides blow by?

 

[oldman]

Use proper capitalization and don't bump your threads.

Here is something I posted in the past that may help.

For a PCV system (both PCV vavle and breather) to work effectively in ventilating the crankcase, they must work together as a team. While the system is under boost, PCV closes and ventilation is done through breather via vacuum in the intake pipe. While the system is under vacuum, PCV opens to relief pressure but more importantly, to remove blowby/contaminates from the crankcase then replace with fresh/metered air pulled in through the breather, this is the second part of crankcase ventilation that most seems to ignore, most only focuses on pressure relief.

Possible problems with other options:

1. Keeping PCV intact while venting the breather: Most running this setup will experience excessive crankcase pressure when under boost due to lack of vacuum coming from the intake pipe which can lead to dipstick pop out, leaky valve seals, tubo seal and gaskets. Less importantly, your AFR will go slightly leaner due to unmetered air.

2. Venting both PCV and brether: Pressure relief is not as big of an issue (provided that pcv is replace by a straight fitting) but because vacuum is completely removed, there are no ventilation and most blowby and contamintes will end up in your oil system. Less importantly your AFR will go slightly richer due to disabling the pcv vavle. Not a big problem for a track only cars but a DD is a different story.

You can easily maintain the integrity of your pcv system while keeping your intake tract clean as well as addressing the known leaky OEM PCV.

PCV side : IM -> heavy duty check valve -> inline/sealed catch can -> PCV valve -> VC

Breather side : VC -> 2nd inline/sealed catch can -> intake pipe.

 

[DsM KiD4]

well im interested in venting the pcv and breather. this is not a daily driver so im not worried about it. what is a "strait" fitting though? can you link me to a site?

 

[Defiant]

dipstick kept blowing off so i replaced my valve cover breather filter

Uh... have you replaced the dipstick O ring? Your blown rings are pumping the dipstick out, which is then pumping oil everywhere.

 

[DsM KiD4]

Uh... have you replaced the dipstick O ring? Your blown rings are pumping the dipstick out, which is then pumping oil everywhere.

well the breather filter was dark brown and it was red when i bought it. i figured the crankcase gases werent venting enough so it would cause the dipstick to blow out. however, i just did a compression test today, 110- 75- 150 - 150 .........i have a thread about it in the bolt on tech forum, maybe you can help me out.
oh and yyes i replaced the dipstick, and whats a strait fitting?