Mark Ayling Posted October 5, 2002 Share Posted October 5, 2002 I know there's been various smoke-related questions on here but I just wanted to ask about my specific situation... I did have a bit of smoke on start-up in the morning after the car had been sat up overnight, and I read in the other thread that this could be because the oil was a bit thin and seeped through the seals or something?? Anyway, I had an oil/filter change (long overdue) the day before I did the track day at Goodwood, where I have to admit I caned the sh*t out of the car Since then, I notice that there's still some smoke in the morning, but I also now get puffs of smoke when I pull away or change gear and floor it (as seen by a friend in a following car). Also, I sat with my engine running for a few minutes the other day (after a bit of a journey, so it wasn't cold), and when I revved the engine I noticed a big puff of smoke come out! Sorry for the wordy post, just wondered if I should be worried or not? Are my turbos perhaps on the way out, possibly giving me an excuse to go for hybrids?! Quote Link to comment Share on other sites More sharing options...
GavinL Posted October 5, 2002 Share Posted October 5, 2002 what colour is the smoke? Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 5, 2002 Author Share Posted October 5, 2002 er...kind of a bluey grey, I think.... Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 6, 2002 Share Posted October 6, 2002 Originally posted by Mark Ayling er...kind of a bluey grey, I think.... Check your throttle body induction pipe for oil film. Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 6, 2002 Author Share Posted October 6, 2002 Originally posted by Terminator Check your throttle body induction pipe for oil film. er.....right....um....ok - all I have to do now is work out what/where the hell that is!! Any pointers...? Cheers, Mark. Quote Link to comment Share on other sites More sharing options...
mazman Posted October 6, 2002 Share Posted October 6, 2002 If you let it idle for a long time(10min)without touching anything...does it smoke? if the answer is is yes= its your turbos if it DOESNT smoke on idle,but smokes once you hit the pedal(after a few min) either wide open throttle or taking off,or just a quick splirt...but goes away after that initial puff of smoke= then its your valve stem seals. Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 6, 2002 Share Posted October 6, 2002 Originally posted by Mark Ayling er.....right....um....ok - all I have to do now is work out what/where the hell that is!! Any pointers...? Cheers, Mark. The big black rubber pipe thinggy that goes in to the grey metal whats it bit in front of your wire/string type throttle cable(s) , unless you have replace the pipes or have a hard pipe. Valve stem seals are after the induction system, so all the leaking oils goes in the pots, turbo seals leaking give an oil film in the pipes, as it has along way to go before it gets burnt.. Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 6, 2002 Author Share Posted October 6, 2002 Phil, now you're talking my language! I do have a hardpipe, but I assume the same check applies? mazman, thanks - I haven't noticed smoke when just ticking over, its when I set off or floor it... So...if its my valve stem seals - is the a) serious and/or b) expensive..?! Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 6, 2002 Share Posted October 6, 2002 Originally posted by Mark Ayling Phil, now you're talking my language! I do have a hardpipe, but I assume the same check applies? Yes, just undo one of the clip thingy dodahs that is easy to get , on any part of the after tubro(wizzy whistly whooshy go faster things) pipes and look for damp stuff in the pipe, it should be dry. If not time to get new turbo- soonish. IMHO Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 6, 2002 Author Share Posted October 6, 2002 LOL thanks Phil, will check it later on... Good job I've got a spare set of turbos in the garage! Of course if I'm replacing the turbos then I might as well get them hybrided! Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 6, 2002 Author Share Posted October 6, 2002 BTW, sorry to repeat myself, but if its my valve stem seals - is it a) serious and/or b) expensive..?! Quote Link to comment Share on other sites More sharing options...
mazman Posted October 7, 2002 Share Posted October 7, 2002 a).Not really serious,just that it will smoke more and more as it gets more miles on it,plus check your oil level often. b). not sure on the price as ive never did it myself on the supra,but shouldnt be much. its the labour that is the killer. what they gotta do is,take the rocker cover off,compress the valve springs and take the valve collets off together with the springs. remove the old seals(that you'll see that is sealing the valve stem) and install the new one,then reinstall the springs ect... NOTE:you have to pressurise the combustion chamber if you are going to do this while head on the block as the valve can fall in the chamber. Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 7, 2002 Share Posted October 7, 2002 I have an old granada that is a real smoker, I dont think it has any seals left. Aweful on start up then OK even got though the MOT. I must get round to poping in the seals had them six months. If you are going to change the seals on the MKIV your self, make sure you put everything back exactly as it came off. If you muddle up the shims and buckets, you will have to set up valve clearances from scratch ARPITA - IMHO Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 7, 2002 Author Share Posted October 7, 2002 Originally posted by Terminator ....If you are going to change the seals on the MKIV your self... NO NO NO NO NO, I think I'll get someone to do it for me actually!! Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 7, 2002 Author Share Posted October 7, 2002 PS Thanks for all your help guys! Quote Link to comment Share on other sites More sharing options...
matt Posted October 7, 2002 Share Posted October 7, 2002 http://mkiv.com/techarticles/valve_stem/index.html Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted October 7, 2002 Author Share Posted October 7, 2002 Nice one, cheers. Now I know I'll get someone else to do it!! Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 7, 2002 Share Posted October 7, 2002 Originally posted by Mark Ayling NO NO NO NO NO, I think I'll get someone to do it for me actually!! Only Joking Mark;) Quote Link to comment Share on other sites More sharing options...
soupratt Posted October 31, 2002 Share Posted October 31, 2002 HI, Just wanted to post my opinion on this as I have a very similar problems as what was described. I don't get much or any smoke on startup unless I really plant it or the weather is cold (so most likely condensation). Recently I have noticed a grey/white cloud of smoke when I take off at the lights but only when the engine is warmed up. Doesn't seem to come on when driving (I had someone behind me watching) but I can smell some oil-smell when decelerating ~ even though there isn't smoke. I have checked the throttle body and it is sparkling clean. I have also checked the intercooler pipes (before the intercooler) and therei s a very faint trace of blackish deposit there but I wouldn't call them coated in oil. I have spoken to a few people and most suggest that it is probably the turbos (the have over 130,000km on them at up to 1.3 bar). What is happening is that on deceleration the vacum sucks some of the oil form the turbo seals ~ usually the 2nd. Also while at idle oil drips from the seals into the exhaust and comes out the pipe in a nice puff when you take off. I havn't got the death whine yet and the car generally feels strong. Oil and water consumption is undetectable (for the moment). Most likely the turbos being the culprits. CHeers Andrei Quote Link to comment Share on other sites More sharing options...
Andrew Dunk Shaw Posted October 31, 2002 Share Posted October 31, 2002 Can you get enough pressure in the combustion chamber to hold the valves up to change the valve stem seals ? If you can it would save quite a bit of dosh as you wouldn't have to take the head off. Has anyone succesfully done this ? Mine smokes on start up and would be very interested to know if this is possible. Leon quoted me around £800 to change mine but that was taking the head off which would also mean new head gasket + a lot more labour time. Regards Andrew(dunk)Shaw Black uk mkiv tt Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted October 31, 2002 Share Posted October 31, 2002 Use the indian rope trick. Quote Link to comment Share on other sites More sharing options...
Andrew Dunk Shaw Posted October 31, 2002 Share Posted October 31, 2002 Originally posted by Martin F Use the indian rope trick. What about pushing a baloon in the chamber then blow it up ???? Regards Andrew(dunk)Shaw Black uk mkiv tt Quote Link to comment Share on other sites More sharing options...
soupratt Posted October 31, 2002 Share Posted October 31, 2002 Yes it can be done. Check here http://home.attbi.com/~pwpanas/Cyratek/ValveStemReplacement.htm You don't have to remove the head to do it Quote Link to comment Share on other sites More sharing options...
Andrew Dunk Shaw Posted October 31, 2002 Share Posted October 31, 2002 Thanks for the info Soupratt. Looks like a right fiddly afair, think i'll be getting some one else thats better with spanners than me to do this. I might wait a bit to do this and save some £££'s and put some modded cams in at the same time. Regards Andrew(dunk)Shaw Black uk mkiv tt Quote Link to comment Share on other sites More sharing options...
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