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Dipstick Dip Stick popped, popping, blow, blowing, blew out [Merged]

Posted by scrcco, Aug 17, 2002

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  1. mikeybrew4g63

    mikeybrew4g63 Probationary Member

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    Joined Sep 10, 2013
    ronkonkoma, New York
    its most likely your pvc valve. when this valve goes bad it doesnt alow the built up vacum in the engine to release. with now where for this pressure to release its forced out by blowing the stick out. this happened to me and that fixed the problem. also make sure your vacum line on the valve cover isnt cloged
     
  2. jed344

    jed344 Proven Member

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    Joined Jan 10, 2008
    Waterville, Iowa
    I will start by saying i never ever popped the dipstick until recently. I installed some hks 272 cams and increased the boost some and it does not do it always just after a few good pulls to red line it will pop out my dipstick and spray oil, With that being said i checked the pcv it checked out good ( i ordered a new one just to be safe) Cleaned my filter i have on the VC breather, compression checked my motor was 165-175 across the board on a warm motor, and leak down tested everything checked out. Last year head was off and has new seals and everything. My dipstick feels like it might have worn the seal out again already, Am i correct in thinking new pcv and dipstick will hopefully fix this issue or do i need to run a new set up to pull the crankcase pressure out? car is going off of my lb/min logging around 430-440whp.
     

    843  26

    1997 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  3. DSM1G90

    DSM1G90 Proven Member

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    Nampa, Idaho
    Think of it this way: a dipstick popping out is like a warning device showing that a dipstick isn't supposed to pop out under reasonable conditions.

    You got some major blowby happening and we need to find a way to rid, or, at least decrease this pressure.

    This popping out of the dipstick is a "safety valve"of sorts to relieve all of this pressure from keeping this pressure from blowing out both the main crank seals..and if this happens, you lose so much oil in a quick that it will suddenly destroy the motor...esp when you're doing WOT pulls.

    When you're under boost, the PCV valve is actually fully closed and all pressure heads out the head cover breather tube to go back into the turbo inlet.
     

    1K  0

    1990 Plymouth Laser RS Turbo
    · 1G DSM
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  4. Marchev

    Marchev Proven Member

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    Joined Jan 31, 2009
    Niles, Illinois
    Your crank case pressure is simply too high. I'm surprised you don't have a catch can setup for better ventilation, with bigger hoses to the VC. You shouldn't be running a filter at the stock breather port either because now you have no vacuum to help pull the air out of the crankcase under boost. Also if you are running stock maf you have unmetered air going in the system as well.
    Get yourself a nice sealed catch can with some beefy hoses to the VC and you won't have that issue. Just my .02 cents
    Hope this helps!
     

    Autocross Build 3K  5

    1990 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  5. Twinturbo120

    Twinturbo120 Supporting VIP

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    Miami, Florida

    Street Build 333  1

    1995 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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  6. 4g63t

    4g63t Proven Member

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    Joined Aug 14, 2005
    North Iowa, Iowa
    Get a new 19$ dipstick and look into a proper pull through catch can system and be done with it.
     

    1K  0

    Evo 8
    manual · Lancer Evolution

    2K  0

    1993 Eagle Talon TSi AWD
    11.44 @ 132.6 · 1G DSM
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  7. GRAVEDIGGER

    GRAVEDIGGER Proven Member

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    Joined Nov 26, 2007
    Uniontown, Ohio
    Oem pcv valves are absolute garbage... :notgood: They simply cannot accurately check off the boost pressure to keep it from making it's way back into the crankcase. :toobad: I would get one of these 3/8" Kynar® Standard Check Valves | U.S. Plastic Corp. as well as using a proper catch can setup.
     

    2K  18

    1991 Eagle Talon TSi AWD
    12.149 @ 115.940 · 1G DSM
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  8. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Independence, Kansas
    I am using one of these, 3/8" Kynar® Standard Check Valves | U.S. Plastic Corp. They are very reasonable and fit in line with your pcv valve. They are rated at 100-150psi and 28 hg vacuum. Works to keep turbo pressure out of your valve cover coming thru your pcv valve. Not saying it isn't doing its job but this will make sure it doesn't let pressure in that way. They were cheap enough that I ordered two.
     

    Street Build 4K  27

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  9. My1GLaser

    My1GLaser Proven Member

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    Bartow, Florida
    Get that check valve! A stock PCV valve barely holds back 10psi on a good day. I ditched the PCV valve altogether.

    A nice seal Calan catch can properly routed is very effective! I just emptied mine of some nasty crap that it kept out of my oil.
     

    2K  0

    1992 Mitsubishi Eclipse GSX
    11.420 @ 121.980 · 1G DSM
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  10. mitsubishikid

    mitsubishikid Proven Member

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    Turlock, California
    I just wanted to post an alternative to buying a new oil dipstick, but if you have the money get a new one and don't look back.

    I had a bad oil leak from my old oil dipstick, a while ago, so I bought a one foot piece of vacuum line from an auto parts store [they sell it by the foot], I then cut about a 2-3 inch piece off the one foot section, and then I sleeved it on the dipstick, and so far I have had no oil leak issues, the only problem is, it was just kinda harder to check the oil level with the hose on there, but I'll take that to a messy under hood oil leak any-day.
     
    Last edited: May 13, 2014

    1K  0

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
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  11. jed344

    jed344 Proven Member

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    Waterville, Iowa
    I have a new Pcv comming a check valve new dipstick and will be running a catch can off the vc breather. Guess ill have to drill my fp intake pipe to put a nipple on it anyone had problems drilling the fp intake pipes? I suppose it's hopefully from the extra boost I'm running 26psi right now and logging 45lb/min
     

    843  26

    1997 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
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  12. pauleyman

    pauleyman DSM Wiseman

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    Street Build 3K  1

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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  13. Insane20

    Insane20 Proven Member

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    Natrona Heights, Pennsylvania
    Stm spring loaded dipstick work nice for that problem, though it wont cure your pressure problem it will keep your dipstick from popping out.
     

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    1995 Eagle Talon TSi AWD
    12.100 @ 121.000 · 2G DSM
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  14. mitsubishikid

    mitsubishikid Proven Member

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    1990 Eagle Talon TSi AWD
    manual · 1G DSM
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  15. bduran1220

    bduran1220 Proven Member

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    Las Vegas, Nevada
    Can anyone take pictures of how after this "3/8" Kynar® Standard Check Valves | U.S. Plastic Corp." Is installed.

    Thanks
     

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    1997 Mitsubishi Eclipse Spyder GST
    awd · manual · 2G DSM
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  16. pacn91

    pacn91 Proven Member

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    Joined Sep 23, 2013
    dallas, Texas
    If you havent explored the link that someone posted above....you may want to go ahead and check it out. Good write up. My ideas came from this link. I still need the catch can myself, but it isnt too complicated.
     
  17. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    I am not home or I would send you a picture. It simply goes inline between the vacuum port and the pcv valve. I just cut my line (3/8 gas line) and installed it with a hose clamp on each end. Make sure it of course points in the correct direction. Suck on one end while it is new, if you can suck thru it mark that side as the vacuum side. Then try BLOWING thru the same side. If you cant blow thru it then you have it marked correctly and install that side on the vacuum port side of the hose with the other end going to the pcv valve. It fits right in line with the hose you are currently using and I didn't have to trim any hose off since its not a very big valve. If you still need pictures, PM me this afternoon and when I get home I will send you a picture of mine to help you out.
    :thumb:
     

    Street Build 4K  27

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    676  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    506  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 710  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

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    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
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  18. fastfred

    fastfred Proven Member

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    carrollton, Ohio
    My car did that a few times the o ring on The dipstick was rock hard. I just got a new one and it hasnt happened since. If your running a breather filter is there a reason you kept the stock pcv setup? I know some people dont think its the best way but i just run 2 hoses off my valve cover down towards the ground.
     

    Street Build 5K  0

    1999 Mitsubishi Eclipse GSX
    503 whp · 441 lb/ft · 2G DSM
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  19. badbird

    badbird Proven Member

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    Joined Nov 15, 2013
    Little Rock, Arkansas
    Common issue on rubber seals that get hot over time I guess, glad I'm not the only one who randomly opens there hood just to push the dipstick back down the tiny amount it pops up every so often.
     
  20. ceedawg

    ceedawg Supporting Member

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    laurelton, New York
    Bad idea draining the crap from the catch can back into your block. Bad idea! I would have the line from your block feed the pressure into the catch can and the other line go to your turbo intake. The catch can should be drained manually by you and thrown away.
     
    ceedawg

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    1995 Eagle Talon TSi AWD
    manual · 2G DSM
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