expat2000 Posted April 1, 2021 Share Posted April 1, 2021 First time out after winter season today as most of the snow has gone. Have only run the bike a few times over winter and never for a prolonged period. Whilst getting some photos before setting out I noticed a plume coming from the engine breather hanging below the engine. Photo is attached and a link to the video. Not sure if it's oil smoke or steam (air cooled engine). I'm thinking either oil / combustion vapours / pressure getting past the rings or, if I'm lucky, steam from condensation in the engine after sitting in an unheated garage for 6 months with temperatures down at -20. Was fresh oil and filter in the motor today. Any thoughts on how to proceed? Bike is an 85 GSX750ES. https://drive.google.com/file/d/1-dVrwk9hsiuj4g-qr1mViVa8VrAAPUiM/view?usp=drivesdk Quote Link to comment
imago Posted April 1, 2021 Share Posted April 1, 2021 If you've run it up over the winter it will be condensation. It forms when the engine cools, the air inside it contracts as it cools and draws in moist air, the moisture condenses on the inside of the cases. Quote Link to comment
Captain Chaos Posted April 2, 2021 Share Posted April 2, 2021 Just warm up the engine completely (go for a good thrash), that'll fix it. Quote Link to comment
Joseph Posted April 2, 2021 Share Posted April 2, 2021 (edited) Yep definitely just condensation. When i rode my katana and gsx1100 as daily commute bikes all year round they would always billow out white "smoke" in the winter mornings for a short while up until they got warmed up Edited April 2, 2021 by Joseph Quote Link to comment
Azov Posted April 2, 2021 Share Posted April 2, 2021 dont know the answer but that bike looks brilliant mate Quote Link to comment
expat2000 Posted April 2, 2021 Author Share Posted April 2, 2021 I think we can put thsi one to bed, ran the bike again today and no more smoke / steam from the breather. Seems like it was condensation after all. Thanks for your help though. 54 minutes ago, Azov said: dont know the answer but that bike looks brilliant mate Cheers, been a few years in the making from the hot mess that it was when I got it, quite pleased how its turned out. New 4 into 1 fitted now, which has dropped quite a bit of weight over the standard system. Shorter swingarm planned for next winter as I think the back wheel looks way to far back after everything else has been shortened. Will be interesting to see how it affects the handling. :-) Quote Link to comment
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