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pushing a ton of oil..

Posted by sexystover, Nov 28, 2010

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  1. sexystover

    sexystover Proven Member

    189
    0
    Joined Nov 6, 2008
    allentown, New Jersey
    whenever i get into boost i pushoil out of every hole possible.. brand new pcv valve in and i have it run to a catch can, the breather on the side of the valve cover just has a breather filter on it so now neither of those push oil but my oil cap DUMPS oil from the center where the screw is and from the seal, also my oil dipstick tube will spray oil under boost, why am i building so much pressure

    heres the mods list

    Engine- head studs, BC 272 cams, rest is stock

    Turbo/Intake- EVO3 16g unported, big FMIC 2.5 inch piping, GM maf with MAFT, tial knockoff vented

    Exhaust- 2g mani and o2 housing unported, apexi N1 downpipe/cat delete , to 2.5" piping with dynomax straight through muffler

    Trans/Clutch- ACT 2600 rest is stock

    Fuel- Walboro 255 rewired, AFPR, 93 oct pump gas

    Tuning- SAFC 2

    running 8psi creeping to 15
     
  2. RvlutionMtrsprt

    RvlutionMtrsprt Proven Member

    570
    24
    Joined Jan 15, 2005
    Eugene, Oregon
    Time for a compression test then a leak down test.
     

    Street Build 954  0

    1991 Mitsubishi Galant VR-4
    manual · Galant VR-4
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  3. sexystover

    sexystover Proven Member

    189
    0
    Joined Nov 6, 2008
    allentown, New Jersey
    i figured someone might say that. ill be doing one tomorow if i have time
     
  4. white92talontsi

    white92talontsi Proven Member

    794
    7
    Joined Nov 12, 2003
    Fayetteville, North Carolina
    I was pushing oil like that for a little while. Eventually I pushed it out the valve cover and onto the t-belt. 13 bent valves later....

    when I pulled the pistons all 4 2nd compression rings were stuck on 1 side of the piston.

    My compression test revealed 170PSI across the board right before it blew up also. So dont take the compression test as "Compression is good, so the motors fine"
     
  5. sexystover

    sexystover Proven Member

    189
    0
    Joined Nov 6, 2008
    allentown, New Jersey
    thanks for the info, luckily its not that bad (it doesnt push from the valvecover seal) just from the oil cap and pcv, so i shouldnt be getting any on my tbelt. i also check it everytime i turn the car off and soak it up so it never has a chance to fill the valve cover or anything that extreme

    im guna try and grab a new oil cap tomorow from mitsubishi if they have one
     
  6. rich3389

    rich3389 Proven Member

    829
    5
    Joined Dec 27, 2006
    Ocean springs, Mississippi
    You can try running your PCV like stock, and getting rid of the catch can. Sometimes they are a bit restrictive and will cause those issues.
     

    817  10

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
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  7. 99gst_racer

    99gst_racer Moderator

    9,058
    825
    Joined Apr 5, 2003
    Coloma, Michigan
    That wouldn't do anything because the PCV system isn't doing anything under boost.


    OP - is your new PCV valve OEM or a generic parts store replacement? Was it doing it prior to replaceing that PCV valve?
     

    Street Build 6K  67

    1999 Mitsubishi Eclipse GST
    609.8 whp · 541.2 lb/ft · 2G DSM
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  8. MichaelSuch

    MichaelSuch Proven Member

    787
    19
    Joined Jun 30, 2008
    Pinckneyville, Illinois
    Valve may not be the problem but the rest of the PCV system could be clogged. Can you blow through the valve on both sides? If you can it is bad. You should only be able to blow through one side of the valve. My car did this all the time, until I did a little engine work and pulled the intake manifold off and pressure washed it. It looks very easy for those tiny ports inside the IM to get clogged. That's what fixed my problem I think.
     

    481  1

    1992 Mitsubishi Eclipse GSX
    awd · automatic · 1G DSM

    Street Build 1K  7

    1995 Eagle Talon TSi AWD
    10.146 @ 134.81 · 2G DSM
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  9. b00st3d4g63

    b00st3d4g63 Proven Member

    105
    1
    Joined Nov 27, 2010
    Beloit, Ohio
    Last edited by a moderator: Jul 10, 2014
  10. rich3389

    rich3389 Proven Member

    829
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    Joined Dec 27, 2006
    Ocean springs, Mississippi
    Yes it would, especially replacing the little air filter on the side of the valve cover and putting a vac line back to the intake...
     

    817  10

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
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  11. tsi209

    tsi209 Proven Member

    62
    0
    Joined Sep 29, 2007
    stockton, California
    My car is doing the same thing but I'm also getting oil in the compressor cover? I had a new gt3076r and sold it and put a fp3065 and I have oil there too? So I was thinking it's blow by. Any ideas please
     
  12. 99gst_racer

    99gst_racer Moderator

    9,058
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    Coloma, Michigan
    How do you know he doesn't have the hose still attached to the intake manifold? I assumed the catch can was inline between the PCV and intake manifold. In which case, the PCV valve is closed and doing nothing under boost. So, eliminating the catch can there wouldn't do anything for a problem that occurs under boost.


    sexystover - We need a better description of your current crankcase evactuation configuration. Can you post a pic?
     

    Street Build 6K  67

    1999 Mitsubishi Eclipse GST
    609.8 whp · 541.2 lb/ft · 2G DSM
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  13. sexystover

    sexystover Proven Member

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    Joined Nov 6, 2008
    allentown, New Jersey
    side vent is open to atmosphere, pcv is run to a catch can and thats it, i have the line on the intake manifold plugged, previously i had no pcv (just an open hole) , then i put in an autozone one plummed to the intake (caused tons of oil on valvecover) then i kept the same pcv but ran it to the catch can (caused "blowby" ..meaning smoke out of pcv valve and oil cap) , now i have a mitsubishi one and a new oil cap so we will see if this one fixes the problem. im still running the mitsubishi one to a catch can and have the intake line blocked




    also did the compression test today 80-psi first puff and 155-160 on all cylinders
     

    Attached Files:

  14. joe_mopar

    joe_mopar Proven Member

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    Castle Hayne, North Carolina
    Without a vacuum source the pcv is not going to open enough to vent the blow-by. I'd replace it with a pipe nipple, then run it to the catch can.
     
  15. 99gst_racer

    99gst_racer Moderator

    9,058
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    Joined Apr 5, 2003
    Coloma, Michigan
    If the catch can is sealed, then run another hose from it back to the intake manifold. This way, it will still evacuate the crankcase under vacuum conditions like the factory set-up, and hopefully you'll be catching some of the aerosol oil with the catch can.
     

    Street Build 6K  67

    1999 Mitsubishi Eclipse GST
    609.8 whp · 541.2 lb/ft · 2G DSM
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  16. sexystover

    sexystover Proven Member

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    Joined Nov 6, 2008
    allentown, New Jersey
    catch can isnt sealed, it has a vent on it, and my problem is when i was under boost it would force the pcv shut and build pressure in the crankcase,thats why i am not routing it to the intake
     
  17. ->PrOjEcTGS<-

    ->PrOjEcTGS<- Proven Member

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    , Missouri
    That is what's supposed to happen...

    Is your dipstick popping out at all?
     
  18. 99gst_racer

    99gst_racer Moderator

    9,058
    825
    Joined Apr 5, 2003
    Coloma, Michigan
    Well, your current configuration is worse that the stock configuration. That's why you're pushing oil out everywhere.

    Read this to figure out how to properly set-up crankcase evacuation: http://www.dsmtuners.com/forums/articles-engine-fuel/366890-4g63t-pcv-system.html
     

    Street Build 6K  67

    1999 Mitsubishi Eclipse GST
    609.8 whp · 541.2 lb/ft · 2G DSM
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  19. sexystover

    sexystover Proven Member

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    Joined Nov 6, 2008
    allentown, New Jersey
    i have no intake.. just a screen on the turbo so that makes it impossible for me to set it up as its described
     
  20. 99gst_racer

    99gst_racer Moderator

    9,058
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    Joined Apr 5, 2003
    Coloma, Michigan
    Then this is the best way to set yours up (using an OEM PCV valve):
     

    Attached Files:

    Street Build 6K  67

    1999 Mitsubishi Eclipse GST
    609.8 whp · 541.2 lb/ft · 2G DSM
    Loading...
  21. sexystover

    sexystover Proven Member

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    Joined Nov 6, 2008
    allentown, New Jersey
    ok but how can the crankcase relieve pressure through the pcv if i have 20+ psi of boost pressure in the intake manifold?

    set up the pcv system as u drew it, havnt really driven it but i found my leak ontop of the VC is from two of the inner bolts so i put a dab of RTV around the bolts in the holes to seal them up, ill find out tonight if it worked or if i need a new VC gasket


    UPDATE, having the pcv hooked up as u drew it 99gst made the crankcase pressure worse so it back to how i had it

    UPDATE X2, well i guess ill see if my VC had a crack because i just snapped it from one bolthole to another after redoing the VC seal while i was tightening it down so my buddy is bringing me a spare he had

    UPDATEx3, well new VC doesnt leak like old one did and bolts are torqued to spec so i guess the old one was already cracked. no more leaks
     
    Last edited: Dec 2, 2010

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