Blue smoke after long idle
+ Reply to Thread
Results 1 to 4 of 4

This is a discussion on Blue smoke after long idle within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; 2002 WRX This happens when the car is cold(ish) and I get caught at a light or something... a couple ...

  1. #1
    Registered User mad matt's Avatar
    Join Date
    Oct 2009
    Location
    Salt Lake City, UT
    Posts
    10

    Blue smoke after long idle

    2002 WRX

    This happens when the car is cold(ish) and I get caught at a light or something... a couple of minutes of idling, and when I go to accelerate I get a puff of blue smoke out of the exhaust. It will stop within about 1 city block.

    Doesn't seem to happen after the car has been running 5-10 minutes and gets fully warm. Oil level is fine, coolant is ok, temp is stable. Haven't noticed any loss of power.

    Local shop took a look at it and is guessing valve guide seals or valve stem seal. They also suggested a thicker oil (I just bought the car, not sure what oil it has now).

    I did some googling and it seems more likely that it's the PCV valve or busted turbo seal.

    Thoughts? Things to check?
    I am kind of a noob but I can handle a wrench and I'm learning fast.

    Thanks for any help or 2nd opinions.
    The only things we're born knowing how to do are defecate and complain. For everything else, there's Google.

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Admiral Ackbar the 1st mycologist's Avatar
    Join Date
    Oct 2005
    Location
    Late Devonian
    Posts
    13,315
    I Support ClubWRX
    Yeah, your probably on the right track. Pull off the intercooler and look for oil - there is typically some residue or maybe a little that you can dump, but definitely not a puddle. With that off you can get to the PCV, I'd just replace it. You can pull the DP and see if the turbo is leaking out that way (maybe let it idle for a few minutes first in case it is all burning off during normal driving). You can also pull the plugs and see if there is oil on any or all (any would be more likely an internal problem, all would be external). They are a bit of a PITA to get to but if you take them out you can do a compression test as well.
    "From a little spark may burst a mighty flame." - Dante
    "The stitch is lost unless the thread is knotted." - Italian proverb

  4. #3
    Registered User mad matt's Avatar
    Join Date
    Oct 2009
    Location
    Salt Lake City, UT
    Posts
    10
    Quote Originally Posted by mycologist View Post
    Pull off the intercooler and look for oil - there is typically some residue or maybe a little that you can dump, but definitely not a puddle.
    I replaced the PCV last night before I read this and when I took of the IC I was like "WTF is this residue?!" It's not a puddle or even that bad I just didn't know what to expect. Also switched to 10w30. No smoke at all this morning and the exhaust smells cleaner. I give it a couple more days before declaring victory, and maybe check the plugs and DP this weekend just 'cause.

    And... eff that big Y hose under the IC.
    The only things we're born knowing how to do are defecate and complain. For everything else, there's Google.

  5. #4
    Banned
    Join Date
    Dec 2003
    Location
    Dallas, TX / Sterling, VA
    Posts
    6,629
    I Support ClubWRX
    Be sure to drain the intercooler.

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •