DannoSupra Posted July 25, 2006 Share Posted July 25, 2006 i was sat in kfc drive through, i know fatty, well all of a sudden, blue smoke past my, lasted bout 3 - 4 seconds, After that i let it idle again outside work, and blipped the throttle, nothing,,, its a kinda come and go thing My car's fully decatted UK spec, ohhh i also had my aircon on, so that will brinf up the revs, or put it under load wont it. Any help? Cheers Dan Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted July 25, 2006 Share Posted July 25, 2006 Mine has started doing this now and again, also when the aircon ups the revs slightly and the car's warm. I'm thinking turbo seals But it also smokes at startup, usually meaning valve seals There was a thread recently about a similar problem, autobox seal was another suggestion. Sorry I can't be of more help, we need a definitive "my car's smoking" thread for the FAQ! Quote Link to comment Share on other sites More sharing options...
michael Posted July 25, 2006 Share Posted July 25, 2006 Turbo oil seals, your valve seals probably need doing as well though. Changing to 10w30 helped save my blushes for a while but in the end I swapped the turbos, still need the valve seals doing though http://www.megaboost.co.uk/supra/mine/smoke/DCP_3800.jpg Quote Link to comment Share on other sites More sharing options...
Guest Bijal Posted July 25, 2006 Share Posted July 25, 2006 if it happens when cold starting its more than likely valve stem seals. when it happens on boost its 1 of 3 things or a combination of 2, turbo(s), bad piston ring(s) or the MOST Common factor is over filling the oil i see too many people over filling oil and this is a very common reason for blueish smoke on boost. bijal Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted July 25, 2006 Share Posted July 25, 2006 Thanks Wasn't happening on boost though, neither was Dan's by the sound of it Quote Link to comment Share on other sites More sharing options...
Scoboblio Posted July 25, 2006 Share Posted July 25, 2006 Changing to 10w30 helped save my blushes for a while I'm currently using 10w-30 I think... maybe time to try 10w-40 just to delay the inevitable. Quote Link to comment Share on other sites More sharing options...
Guest Bijal Posted July 25, 2006 Share Posted July 25, 2006 Thanks Wasn't happening on boost though, neither was Dan's by the sound of it oh well, still useful information though Quote Link to comment Share on other sites More sharing options...
DannoSupra Posted July 25, 2006 Author Share Posted July 25, 2006 cheers for the info. im using 10w40, im gonna try some 10w60, the stuff we got in out fiesta st cup car Quote Link to comment Share on other sites More sharing options...
DannoSupra Posted July 25, 2006 Author Share Posted July 25, 2006 oil will be mucn thinner in this sort of weather aswell! i'll see what its like after changing the oil Quote Link to comment Share on other sites More sharing options...
wkdtime Posted July 25, 2006 Share Posted July 25, 2006 Id go for 10w50 at most to be honest, 60 may be a little too thick. Quote Link to comment Share on other sites More sharing options...
Bob Posted July 25, 2006 Share Posted July 25, 2006 If your valve seals are dead (and it sounds like they are), couldn't it possibly be the seals letting a few drops of oil through whilst the engines idling? Wouldn't that give the blue smoke? It just seems odd to me that it might be the turbo seals when not boosting or under load. Quote Link to comment Share on other sites More sharing options...
michael Posted July 25, 2006 Share Posted July 25, 2006 All I can say is that I had exactly the same problem - sat in traffic, AC on... each time the engine revs went up for the AC to do it's thing a little puff of blue smoke appeared, under WOT it wouldn't really show. It was diagnosed as a lack of backpressure due to decat / exhaust which was highlighting the problem with the seals, had I still had the cat in it's unlikely I'd notice it but the issue would still be there. All I can say it that I replaced the turbos and this little annoyance went away, I haven't replaced the stem seals as yet and the little bit on startup is still there. Quote Link to comment Share on other sites More sharing options...
fat_controller Posted July 25, 2006 Share Posted July 25, 2006 this doesn't sound good, i recently de-cated my uk twin and found it a little smokey, mainly just after starting her up though, nothing major, also after the cars been sitting at idle for a while. i'll try that air con thing aswell. i can't afford to spend anymore on the bloddy thing. Quote Link to comment Share on other sites More sharing options...
michael Posted July 25, 2006 Share Posted July 25, 2006 Fat_controller - yours sounds more like valve stems seals Quote Link to comment Share on other sites More sharing options...
fat_controller Posted July 25, 2006 Share Posted July 25, 2006 is that bad? how much are we talking Quote Link to comment Share on other sites More sharing options...
michael Posted July 25, 2006 Share Posted July 25, 2006 is that bad? how much are we talking More annoying than anything, it won't make the car blow up People quote all kinds of prices for the job depending on the way they do it, for a proper head off affair it's something like £1000 because of the labour, for the 'rope trick' method you are looking at half that. Quote Link to comment Share on other sites More sharing options...
Bob Posted July 25, 2006 Share Posted July 25, 2006 I did my valve stem seals using the rope trick, over a period of two or three evenings. There's plenty of good guides about now (especially TLicense's on here) if you feel fairly confident with the spanners Quote Link to comment Share on other sites More sharing options...
Hayixer Posted July 26, 2006 Share Posted July 26, 2006 What is the rope trick method ?? Quote Link to comment Share on other sites More sharing options...
Bob Posted July 26, 2006 Share Posted July 26, 2006 If you have a search for the guides on here to replacing your seals it'll shed more light. Basically, it consists of inserting a bt of rope through the spark plug hole and compressing it with the cylinder. That means you can leave the head on and replace the valve seals/springs/retainers without fear of them dropping into the chamber. Quote Link to comment Share on other sites More sharing options...
wkdtime Posted July 26, 2006 Share Posted July 26, 2006 Bob, you have balls of steel mate for doing the 'Rope method' your self! Quote Link to comment Share on other sites More sharing options...
Bob Posted July 26, 2006 Share Posted July 26, 2006 lol, I got about a third of the way in and went throught the point of no return! It's easy enough with the right tools, even though I lost a day to losing a couple of collets (pinged off into the front garden!) Car hasn't blown up yet, and no smoky starts so must be a good sign! I did consider taking the head off altogether, but decided against it as I don't know what kind of condition it's in, i.e. whether it's been skimmed or owt in the past. Figure I'll leave that to someone who knows what they're doing! Quote Link to comment Share on other sites More sharing options...
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