suprakid95 Posted December 28, 2012 Share Posted December 28, 2012 hello, this problem has been bothering me ever since i have purchased this car. So my problem persists as following. Car is a TT JDM mkiv auto supra with 68 000 miles all original miles, bone stock absolutely no modifications what so ever to the car. So when i let the car sit for more than 3 days, it will have blue smoke when i first start it up cold, and it will go away after its done blowing it out. I made a video so click on it below to see it. Once the car has been started i can shut it off right away and it wont smoke again at start up. I let it warm up at idle and rev it all the way to 6K and there is no sign what so ever of blue smoke while revving and after i let off the gas pedal there is no blue smoke neither, when im driving the car and floor it all the way to 6K i have gotten my friend to follow behind me, while i stayed on it (hes got a supra as well) and his window was down, and he saw no trace of blue smoke, or any smell of blue smoke while i was accelerating and letting off. Yet i noticed that after 2 tanks of gas, it has burned 250ML of oil. If i let the car sit for 1 day and go to start it up cold there is no trace of blue smoke at start up. I have also took off the charge pipe for the intercooler and there was a small puddle of oil, but nothing crazy or dripping out. I took out my filter and noticed a puddle of oil in the air box, and noticed how the oil has dripped down the air box into the airbox were it formed a puddle. Here in the video your about to see is a very cold start up were the car has been sitting for 7 straight days un-touched and un-started, it was quite cold outside as well little bit below freezing. I am confused on what could be causing my blue smoke at start up. My two guesses is my turbo seals are going out, or its my valve stem seals, or its both. I need some input please Quote Link to comment Share on other sites More sharing options...
ronttuk Posted December 28, 2012 Share Posted December 28, 2012 Valve guide oil seals Quote Link to comment Share on other sites More sharing options...
mellonman Posted December 28, 2012 Share Posted December 28, 2012 yep valve stem seals Quote Link to comment Share on other sites More sharing options...
ManwithSupra Posted December 28, 2012 Share Posted December 28, 2012 Stem Seals for sure. Quote Link to comment Share on other sites More sharing options...
dan294 Posted December 28, 2012 Share Posted December 28, 2012 Mine was exactly like that before I had my stem seals done. Doesn't smoke at all now! Quote Link to comment Share on other sites More sharing options...
Josh Posted December 28, 2012 Share Posted December 28, 2012 Those guys above are all wrong, it's actually the valve stem seals Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted December 28, 2012 Share Posted December 28, 2012 Thats actually not that bad, but yeah, stem seals. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 28, 2012 Share Posted December 28, 2012 It could also be glazed bores. Pull the head, check the bores and guides when doing the stem seals, I see lots of 2JZ engines with knackered guides these days. Stem seals will only fix worn guides very short term. Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 28, 2012 Author Share Posted December 28, 2012 (edited) what about me finding a puddle of oil in my air box?? wouldnt that be coming from the turbo's ??? I will make another video today, of my revving the car all the way to 6K just to make sure there is no oil coming out on acceleration or deceleration. Another thing i have noticed when i was changing the sparkplugs, is that someone else in Japan took off the valve covers for what ever reason. I wonder if they fixed the valve stem seals, or simply replaced the valve cover Seal. Edited December 28, 2012 by suprakid95 (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 28, 2012 Share Posted December 28, 2012 Personally, as it's not very bad, I'd just live with it and top the oil up weekly, until such a time you decide to give it a full engine overhaul, or it becomes chronic. Oil is cheap compared to a proper head job (Or two new turbos....). Quote Link to comment Share on other sites More sharing options...
DaveR Posted December 28, 2012 Share Posted December 28, 2012 Those guys above are all wrong, it's actually the valve stem seals Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 28, 2012 Author Share Posted December 28, 2012 hmmmm its problems have got me wondering. I was thinking to sell it as is, and get my self a 6 Speed supra. not sure i need some input Quote Link to comment Share on other sites More sharing options...
thetrashcanman Posted December 28, 2012 Share Posted December 28, 2012 Depends how much you love the car, but you could do the valve steam seals and convert the car to a 6 speed manual for around the same price as buying a good TT6 and tbh if you've got the money to buy a TT6 you'd be much better of fixing this one as with the Valve steam seals going I doubt you'd get more then about 4k for the car. Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 28, 2012 Author Share Posted December 28, 2012 Hmm thats weird, because here in canada i can get around 6K for the car, and a TT 6 speed is about 8700K. So im not sure on what to do. I love the car, but i just want a 6 speed manual. how much is a 6 Speed V160 over there?? Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 28, 2012 Author Share Posted December 28, 2012 Alright guys, here is the video me reving the car all the way to 6500 Rpms, i didnt see any trace of blue smoke in the video. Do you see any?? Its mainly the white condensation smoke. Quote Link to comment Share on other sites More sharing options...
Abz Posted December 28, 2012 Share Posted December 28, 2012 Hmm thats weird, because here in canada i can get around 6K for the car, and a TT 6 speed is about 8700K. So im not sure on what to do. I love the car, but i just want a 6 speed manual. how much is a 6 Speed V160 over there?? Roughly £3,000 for a 6 speed box, then you have to think about clutch puddle, clutch and labour for fitting so all in all I would say it is closer to £5k including labour. An as mentioned above it is the valve stem seals, small parts to replace but costly job. Their is a thread on here on how to do it. Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 29, 2012 Author Share Posted December 29, 2012 why did i find oil in my airbox? is that normal?? Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 29, 2012 Author Share Posted December 29, 2012 any ideas? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 29, 2012 Share Posted December 29, 2012 In a stock air box, no, maybe just a misting. Serious oil contamination of the air intake side is either excess crankcase blow by via the damnable positive crankcase ventilation system, or very bad turbo seals on the compressor side. It's very easy for people to say "Oh, that's valve stem oil seals". Believe me, blue smoke on start up can be EXTREMELY hard to diagnose, hence me suggesting you ignore it until it becomes chronic, or you need to pull the engine for a full overhaul. If you want a stab at a repair I'd suggest a new PCV valve, and new valve stem oil seals done with the head in situ. That's, relatively speaking, a cheap repair, and you may get lucky. Otherwise two new turbos at over 1200 UK Sterling plus taxes each, and a re-bore and new pistons should fix the other two suspects Sadly £30,000 cars don't get any cheaper to fix even when they cost £30. Seriously, I'd ignore for now. Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 29, 2012 Author Share Posted December 29, 2012 thanks for the reply. Here is a picture of what i did. as u can see were the tip of that red bubble is pointing to the exhaust side PCV, my supra buddy told me to take off that hose, and install a small K&N air filter on it, and cap the other end. And so i did. I would like to say that since then i have noticed the oil in my airbox but i cannot be so sure about that, as i noticed that motor oil was in my air box couple months ago, i believe i noticed that a month after i put the little filter on the PCV, and i noticed accidentally while checking my air filter to see how clean it still was. I have also noticed that when the car arrived here in Canada from japan, it didnt burn a drop of oil, nor did it have any smoke at start-up as soon as i went to pick it up. as soon as i dumped the old motor oil out of the car, i noticed that there was smoke at start up, then month later noticed the oil in my airbox. I used Castrol 10W-30 Fully Synthetic is what motor oil is in the car currently. However with the old oil car didnt have any oil in the airbox ( and i drove it for a week with old motor oil) nor did it have any blue smoke at start-up with the old oil. Something fishy is going on with it Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 29, 2012 Author Share Posted December 29, 2012 Also here is a picture, when i took off the intercooler piping, when it had the oil motor oil in it. Clean as whistle Then after i changed the motor oil, a week later i took off the intercooler pipe and noticed a very small amount of oil there which all of that oil was very black and my motor oil was clean as a whistle, and the oil that i found in there it wasnt even a cup full. I will take some time to take off the intercooler piping once again sometime this week to show the amount of motor oil in there Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 29, 2012 Share Posted December 29, 2012 You will ALWAYS get some oil in the intake. You haven't done the PCV valve removal correctly. I would buy a new one and refit the stock plumbing. Oil wise people can and do witter endlessly. If the rings and stem seals are a bit tired I'd go to something like a 15 / 50 or even a * / 60 oil, but it might make no difference. Unless the intake pipes are awash with oil I really wouldn't worry too much. But I would reinstate the pCV valve unless you want to do a fair amount of work and fabrication adding bigger breather hoses and making an oil catch tank. personally I never run PCV systems on race or highly modded road car engines, but as yours is a stock engine, I'd keep the PCV valve set up stock as well. Quote Link to comment Share on other sites More sharing options...
suprakid95 Posted December 30, 2012 Author Share Posted December 30, 2012 You will ALWAYS get some oil in the intake. You haven't done the PCV valve removal correctly. I would buy a new one and refit the stock plumbing. Oil wise people can and do witter endlessly. If the rings and stem seals are a bit tired I'd go to something like a 15 / 50 or even a * / 60 oil, but it might make no difference. Unless the intake pipes are awash with oil I really wouldn't worry too much. But I would reinstate the pCV valve unless you want to do a fair amount of work and fabrication adding bigger breather hoses and making an oil catch tank. personally I never run PCV systems on race or highly modded road car engines, but as yours is a stock engine, I'd keep the PCV valve set up stock as well. I havent removed the PCV valve at all. All i did was i simply took the hose off on the exhaust side PCV and capped the the end of the turbo charge pipes, and on the actual PCV valve i put a K&N filter on it, only on the exhaust side, on the intake side i left it all stock. thats why im wondering where this oil in my intake box is coming from, its got my stock air filter on the bottom of it soaked in motor oil. The car has 68 000 miles, do the pistons rings get that worn out at 68 000 miles, or at this mileage get pretty much blown turbo seals??? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted December 30, 2012 Share Posted December 30, 2012 There isnt an exhaust side PCV valve, theres only one one the intake, the exhaust side is purely vacuum into the intake side. Piston rings are barely run in at 68,000 miles (if that is indeed the true mileage), engines go to 250,000 miles without issue. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 30, 2012 Share Posted December 30, 2012 There's only one PCV valve and it's on the intake side of the engine. Quote Link to comment Share on other sites More sharing options...
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