pistonbroke Posted October 12, 2009 Share Posted October 12, 2009 Noticed today that my car belched out a puff of blue smoke after a while sat idling in traffic. I then managed to get it to do it again by coasting in gear off throttle (over run) and then applying the throttle again. I've never seen any puffs on startup which I thought would indictate stem seals, and I get no smoke on boost or at any other times. So, according to this thread it could still be valve stem seals http://www.mkivsupra.net/vbb/showthread.php?t=67516 But I get nothing on startup. Throughout my searching, I've found that the PCV can cause smoking issues, but haven't found in what circumstances it would smoke. Thoughts please, before I give the car to AFR for stem seal replacement. Edit to add, my car has been sat recently for up to a month between starts, could this period have dried the stem seals out through lack of use? Quote Link to comment Share on other sites More sharing options...
Stonkin Posted October 12, 2009 Share Posted October 12, 2009 Could it just be water thats gathered in the exhaust whilst its been sat around the last month? Or would that be white smoke? Maybe just give it some good runs over the next week and see if it clears? Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 12, 2009 Author Share Posted October 12, 2009 White smoke is water, it's defo blue though and stinks of oil. I've just been out to check the PCV valve, it's got blue oil mist all around it and the connecting pipe is solid, so no doubt the connecting breather pipes between the covers are the same too. I'll change the PCV first seeing as it's dirt cheap along with the pipes and see if that has any effect. I'll report back once it's done with the results. Feel free to suggest anything else in the mean time though Quote Link to comment Share on other sites More sharing options...
SimonT Posted October 13, 2009 Share Posted October 13, 2009 My valve stem seals are shot on my car but i only get smoke on start up and ive not seen it when backing off or on idle but ive read on here also that when backing off etc it could be turbo seals but dont quote me on that!! Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 13, 2009 Author Share Posted October 13, 2009 My valve stem seals are shot on my car but i only get smoke on start up and ive not seen it when backing off or on idle but ive read on here also that when backing off etc it could be turbo seals but dont quote me on that!! Turbo seals would smoke on boost, but I get nothing, just on overrun. I finished work late last night and took her for a spirited drive, (the first one since I;ve had her back). My word she flys !! . It was too dark to discern whether I had any smoke but another run out today will confirm it. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 13, 2009 Share Posted October 13, 2009 No mate, turbo seals would smoke on over-run due to the vacuum in the exhaust, and on idle, but not on boost unless its a particularly bad failure Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 13, 2009 Author Share Posted October 13, 2009 See, mine doesn't actually smoke on over run, it's when the throttle is applied after over run, I get a little puff very randomley. However, to report back after my blat last night, I got no smoke at all today while driving. Could it be some old oil deposits of oil that dried up while the car was stationary for so long? Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted October 13, 2009 Share Posted October 13, 2009 mine was doing the same thing a while back , smoking on over run , , wouldt smoke on boost or start up , but then if i was driving around then stoped at lights or traffic it would begin to smoke , turned out a new tubby was in order:(, check your ic pipes for oil , ther should be a fine residue of oil anyway but if it lookms a bit exessive could be you turbo. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 13, 2009 Author Share Posted October 13, 2009 I get no smoke on idle, none on over run, I just had the occasional puff when throttle is re applied after coasting. Quote Link to comment Share on other sites More sharing options...
caseys Posted October 13, 2009 Share Posted October 13, 2009 (edited) Dude, I was getting a little puff on startup and also after coasting and blipping the throttle, having sat in traffic too though it smoked when throttle rapplied, so vaguely similar to your issues. A good run down the bypass cleared it out for a day or so, then it returned. Did check IC pipes etc wondering if it was turbo oil seal. Eventually went the whole hog for a head clean / stem seals at AFR, highly recommended. http://mkivsupra.net/vbb/showthread.php?t=191906 In fact you replied to my thread! DOH! Edited October 13, 2009 by caseys (see edit history) Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 13, 2009 Author Share Posted October 13, 2009 Cheers Casey, I just got off the phone to John (dude) and chatted with him about it. I won't have the funds for a full head off recondition job until next year. He's said though that stem seals would defo give me smoke on startup first thing, but I don't get any of that. I've googled a bit for the past 30 mins and the PCV is a prime candidate for my symptoms. I'll wack a new one on seeing as thay are relatively cheap and report back with the findings. I'll take off one of my FMIC pipes this weekend and have a gander. Fingers crossed the tubby seals aren't fubar'd. I can't afford to go single yet. (though if the missus gets wind of what I;ve been spending recently, I'll be single a lot sooner ) Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 15, 2009 Author Share Posted October 15, 2009 Here are a couple of pics of the inside of the pipes. No oil whatsoever! So does that mean my turbo seals are ok? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 15, 2009 Share Posted October 15, 2009 If its only occasionally Id ignore it personally, but thats just me. Exhaust oil seals are the ones that cause the smoke so you wouldnt neccesarliy see oil in the intake Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 15, 2009 Author Share Posted October 15, 2009 Ahhh, I see, so it may be leaking straight into the hot exhaust and not in through the intake? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 15, 2009 Share Posted October 15, 2009 Yes mate, it takes very little oil to make alot of smoke But if it was shot you would smoke constantly on idle. Quote Link to comment Share on other sites More sharing options...
edge Posted October 15, 2009 Share Posted October 15, 2009 When i had my supe i went to local meet. As we pulled up i blipped the throttle for someone asking to hear the zorst note. When i did it filled car park up with smoke (blue/black) and after that it never done it ever again! Oil level was perfect and so was everything else. If its not pumping it out i'd wait till the mot and see what the emissions come out at. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 15, 2009 Author Share Posted October 15, 2009 Ok, next then, I'll change the PCV valve and see if it has any effect on the smoking. Though, I've driven her several times since starting this thread, and I've not managed to ger her to do it again. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted April 6, 2010 Author Share Posted April 6, 2010 Just to resurrect this thread, the PCV valve has not worked, it's still randomly puffing out blue smoke once warmed up on pull away in traffic. I'm having the turbos taken off at the end of the month to have them reconditioned (hybridised ) in the hope that it sorts the problem. I'll update this thread with the results. Quote Link to comment Share on other sites More sharing options...
Dnk Posted April 7, 2010 Share Posted April 7, 2010 My monies on stem seals, mine were absolutely shot but didn't smoke too much, when we got them off they were all rock hard and long overdue being changed Do you not get any smoke on start up / mine did but only for a second or two Quote Link to comment Share on other sites More sharing options...
caseys Posted April 7, 2010 Share Posted April 7, 2010 (edited) Edit : Ignore this post, being an idiot. Edited April 7, 2010 by caseys Already posted previously what I'd said! (see edit history) Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted April 7, 2010 Author Share Posted April 7, 2010 (edited) I get no smoke on startup. My problem is exactly the same as described here by Michael http://www.mkivsupra.net/vbb/showthread.php?t=16703&highlight=blue+smoke&page=5 Edited April 7, 2010 by pistonbroke (see edit history) Quote Link to comment Share on other sites More sharing options...
caseys Posted April 7, 2010 Share Posted April 7, 2010 I get no smoke on startup. My problem is exactly the same as described here by Michael http://www.mkivsupra.net/vbb/showthread.php?t=16703&highlight=blue+smoke&page=5 Y'know I can't believe I said the same thing twice in the same thread I'm such a t**t. More caffiene required. Hope it's PCV for you chap as it'll be a lot cheaper a fix. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted April 7, 2010 Author Share Posted April 7, 2010 Just to resurrect this thread, the PCV valve has not worked, it's still randomly puffing out blue smoke once warmed up on pull away in traffic. I'm having the turbos taken off at the end of the month to have them reconditioned (hybridised ) in the hope that it sorts the problem. I'll update this thread with the results. More caffiene required. Hope it's PCV for you chap as it'll be a lot cheaper a fix. Just got a message back from michael, his problem was his turbos. Quote Link to comment Share on other sites More sharing options...
Dnk Posted April 7, 2010 Share Posted April 7, 2010 I think if i had the turbo seals going and was removing them for a rebuild then i'd be inclined to bite the bullet and do the head at the same time if funds allowed ofcourse. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted April 7, 2010 Author Share Posted April 7, 2010 I think if i had the turbo seals going and was removing them for a rebuild then i'd be inclined to bite the bullet and do the head at the same time if funds allowed ofcourse. That's it though mate......funds. It's 1k to get the turbos done. I've been saving for ICE stuff for months, but the money is now going on getting the tubos done. I've had the car for nearly a year with no stereo, it's a good job the 2jz is a nice sounding engine. Quote Link to comment Share on other sites More sharing options...
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