The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

PCV routed into intake

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Midnightride

15+ Year Contributor
183
0
Oct 4, 2006
Columbus, Ohio
Let me explain first, then I will ask my question. Not to long ago I unhooked all the vacum lines from the throttle body, removed all sensors and what not for emission in engine compartment. I also got a fuel filter and routed the PCV and the breather line into the filter and then hooked it up to the intake snorkel. I then developed a leak on the cam seals so we took the filter of an relized it was bit to hard to blow through. (did replace the cam seals, and hope no other seals were ruined by the pressure build up)

So now I have one hose coming of the PCV and one hose coming from the breather side and have them T into a hose going to the intake snorkel like stock.

Question I have, will it still realase the pressure and will there be enouph vacum to get the pressure out by this method or should I just hook the PCV back up like stock and keep chaning it every few months since they seem to go out. Do I need a filter there(catch can, or filter)? I know I will be gettin some oil int the turbo, but it does that in stock from too so should be to bad. I can put a filter in there, but the ones I have had so far have all been to restrictive. I got one that was pretty free flowing, but somehow condensation go in there. We blwe through it and water came out so no good there.

Question two, having it hooked up like I do, could this make the oil dip stick pop out as well? I have never had it pop out as long as I had the car and for some reason yesterday morning upon start up it poped out. Well atleas I think it was during start up and letting the car idle cause after work I noticed it had oil everywhere and dip stick was half way out. Like I said its never done that before. I was not boosting at all just normal driving especially during the weather conditions. Actually driving slower.

Just thought I would ask. Perhaps they are related, or perhaps not.
 
the pcv, should goto the intake manifold, and the breather side should goto the intake snorkle, or just put a filter on the breather side....
 
I know where the PCV goes stock, There not much left that is stock on my car. I know a lot of folks on here use a catch can and route both lines in it and then run one line to the intake snorkel.
 
Breather Filter = Messy oily engine bay instead of messy pipes I prefer going with a catch can setup

as far as the dipstick popping up... it could be as simple as the rubber part of the dipstick being worn out and not providing much grip against the tube. I replaced mine and havent had an issue yet.
 
The way you have it hooked up currently is not relieving CC pressure when under vacuum.
As you probably know, this is not good for the motor. Go back to stock setup.
 
Could you shed some light on this?

My thought is, PCV is there when to much pressure is build up to let it out, only one way passage right? Which lets the pressure dump into the intakemanifold. Why would it be different if running it to a catch can (or no catch can) that has a constant vacum from the turbo inlet side?

PCV I had on ther was new, when doing a boost leak test I noticed it was leaking there. Dont want to keep bying new ones and having them fail so rapidly. I know they are a common thing to fail since there are a lot of posts out there discussin them failing.

anyone else or romeen care to put some more light on you statement.
 
The PCV valve is not for relieving excess pressure as much as it's a check valve for vacuuming out fumes/vapor that's present inside the valve cover area. The only thing pressure related to the PCV is to hold back pressure while under boost, which it doesn't do a very good job at for very long (from my experience, even a new OEM PCV valve will leak rather quickly).

The vent side is just that, it vents excess pressure from the valve cover area, plus it provides fresh air while the motor is under vacuum.

A rather lengthy, but good thread is here (with an idea to "fix" it with a check valve): http://dsmtuners.com/forums/showthread.php?t=229338
 
Ha I was just reading that link as it was posted by you (FORMONTOYA). Did anyone ever look into the idea of using a EVO PCV? What inline checkvalve did the one dude on page 2 use. something about it will hold over 50 psi. I didnt see where he linked to the item.
Can valves like that be picked up locally too or have to be ordered?

Thanks.

Yea i have it hooked up like you had in your diagram.
 
This is the check valve I currently have on mine and no longer have a problem with the pcv valve leaking or blowing out the dipstick.

http://www.usplastic.com/catalog/va...ory_name=45&product_id=15641&variant_id=64175

It is rated to hold 150 psi of pressure and only needs 2 hg of vacuum to open. I just put it into the line between the intake and pcv valve. Also I know Saab 900's used a similar check valve on the pcv valve from the factory for the same reason.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top