gazza g Posted September 22, 2016 Share Posted September 22, 2016 Hi guys I have an issue with the car smoking, colour wise it's greyish, engine is around 6k old after going forged, the smoking occurs when the engine is hot, never does it on idle or on boost(that I can see), it's when I coast then touch the throttle, in stop start traffic you can't see out there rear window. I have had the car back at the garage the engine was built and they have done compression and leak down, bore scope, removed turbo chra and inspected and found nothing and suggested moisture in the exhaust but after the weather we have had this is now highly unlikely. Would valve stems cause this to happen, as before now smoke on idle and no smoke on startup either. It's slowly getting worse. Cheers Quote Link to post Share on other sites
5e colin Posted September 22, 2016 Share Posted September 22, 2016 if it bothers you really that much then just turn of the engine thats what i would do anyways ha ha i think you are just experiencing cold condensation from the exhaust ?? now the weather is cooling down white smoke is water burning bleu smoke is oil burning Quote Link to post Share on other sites
gazza g Posted September 22, 2016 Author Share Posted September 22, 2016 It's 1 million % not condensation it's been doing it months. I'll just take it back and be without it another few months I suppose. Quote Link to post Share on other sites
5e colin Posted September 22, 2016 Share Posted September 22, 2016 you said it filled out the rear view mirror with smoke if its that bad it must be oil burning kid are you keeping an eye on your oil and coolant levels ? Quote Link to post Share on other sites
gazza g Posted September 22, 2016 Author Share Posted September 22, 2016 It uses oil but was told all forged engines use a bit, I do top coolant up once a month. Would valve stems do this then Colin? Quote Link to post Share on other sites
4e_FTe Posted September 22, 2016 Share Posted September 22, 2016 I dont know about the oil usage on forged lumps as i havent looked into forging yet but i cant see it being good you topping coolant up once a month, and regards to smoking whilst idle, stop/start etc then yeah possibly stem seals if the garage has ruled out everything else. Quote Link to post Share on other sites
Ollieh17 Posted September 22, 2016 Share Posted September 22, 2016 Sounds like it could be stem seals or worn valve guides. Under high vaccum it can pull a bit if oil through. I had it once on a very steep hill i coasted down, then a puff of smoke. Has never happened again. Valve guides seem to be a thing thats ignored when forging Quote Link to post Share on other sites
gazza g Posted September 23, 2016 Author Share Posted September 23, 2016 When I top coolant up it's possibly around 100-200ml, when forged the head was rebuilt with new valves guides and valves. I had heard that toyota stem seals can be a little dodgy even when new so I gave him updated zisco ones to fit, I'll give him a ring and get some advise, makes sense when coasting you pulling high vacuum that oil will be sucked into the chamber, I do know it's a high compression build. Quote Link to post Share on other sites
5e colin Posted September 23, 2016 Share Posted September 23, 2016 Sounds like it could be stem seals or worn valve guides. Under high vaccum it can pull a bit if oil through. I had it once on a very steep hill i coasted down, then a puff of smoke. Has never happened again. Valve guides seem to be a thing thats ignored when forging he said it filled out the rear view mirror so i doubt it will be valvestem seals ollie as that smoke is never going to fill out the rear with smoke ? ( not that i ever seen anyways ) u should not be topping water up every month thats your isseu right there i think gasket is seaping a tiny bit causing the smoke ? get a sniffer test don on the3 coolant drive it till it does it again then test it Quote Link to post Share on other sites
gazza g Posted September 23, 2016 Author Share Posted September 23, 2016 On the worst case it will fill the rear view mirror when stop start traffic, but 90% of the time it isn't as bad as that. Coolant system has been pressure tested on cold and hot with no issues. It is a very weird one that's why am asking you guys, am usually pretty good with cars but this is very strange. I'll mention the sniffer test to prove/disprove it's coolant. Quote Link to post Share on other sites
Ollieh17 Posted September 23, 2016 Share Posted September 23, 2016 he said it filled out the rear view mirror so i doubt it will be valvestem seals ollie as that smoke is never going to fill out the rear with smoke ? ( not that i ever seen anyways ) u should not be topping water up every month thats your isseu right there i think gasket is seaping a tiny bit causing the smoke ? get a sniffer test don on the3 coolant drive it till it does it again then test it Doesn't take alot of oil to make alot of smoke. Its the internet too, people exaggerate, twist and withhold info lol. With that logic, why would coolant burning fill the mirror coasting and not booting it? Surely more would be burnt on boost Quote Link to post Share on other sites
5e colin Posted September 23, 2016 Share Posted September 23, 2016 why would coolant burning fill the mirror coasting and not booting it? Surely more would be burnt on boost under boost oil coolant wont reach the combustion chamber that easy will be much easier coasting it Quote MultiQuote Quote Link to post Share on other sites
gazza g Posted September 23, 2016 Author Share Posted September 23, 2016 If it's a coolant leak to cylinders on boost wouldn't it blow the coolant out the radiator? It is running 1.4bar , I would see other issues surly like overheating or blowing the radiator popping a hose ext. Quote Link to post Share on other sites
5e colin Posted September 23, 2016 Share Posted September 23, 2016 depends how big the leak is but ya 1.4bar would make it leak the rad cap anyways so ya probly not the isseu the search continues Quote Link to post Share on other sites
dan106 Posted November 14, 2016 Share Posted November 14, 2016 Just wanting to bump this up, I'm having the same smoking issue, not forged and I'm pretty sure unopened 4efte on 180k kms, had it before and it turned out my turbo was gone, got it rebuilt and made into a hybrid but I'm still getting the smoke after boosting up coasting and touching the throttle.Never smokes on boost or on idle, can it be fuel related?Never have to top up oil or coolant but then again it only gets driven at weekends Quote Link to post Share on other sites
dan106 Posted January 4, 2017 Share Posted January 4, 2017 So my car is now doing this constantly, the oil level does seem to drop, did anyone get to the bottom of it? Quote Link to post Share on other sites
gorganl2000 Posted January 5, 2017 Share Posted January 5, 2017 have not read the tread...what color is the smoke?...does it smoke on early morning start up (i don't mean the water vapor)?..do it smoke when you let off throttle going down hill? Quote Link to post Share on other sites
dan106 Posted January 5, 2017 Share Posted January 5, 2017 Read two posts up Sent from my iPhone using Tapatalk Quote Link to post Share on other sites
gorganl2000 Posted January 5, 2017 Share Posted January 5, 2017 if your turbo and bottom half are in good health, i'm thinking more along the lines of valve stem seals---which is why i asked those specific questions Quote Link to post Share on other sites
Ollieh17 Posted January 5, 2017 Share Posted January 5, 2017 sounds like youll have to start replacing bits to get to the bottom of it. Quote Link to post Share on other sites
msg1 Posted July 4, 2017 Share Posted July 4, 2017 Interesting...mine seems to be a bit of the reverse. When idling, it smokes too much...not visible as if a turbo seal is gone but still too much smoke. Smoke isnt blue but isnt really white either....i know it is not the best description but i will try to get a vid of it. The strange part is the smell of the smoke, smells like something is burning. And it does not smoke all the time, seems to be on and off occurence...i know it tends to come after some hard runs tho..but other times it can simply be after switching on the car. Quote Link to post Share on other sites
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