Hi,<br />I took boat out after 2 months and Suzuki DF 50 4 stroke 05' model ran fine until I took at max revs for several mins. White smoke then started to come out of exhaust. I stopped and switched engine off. After a few mins started again with some white smoke. Ran at 1000 revs below max for a minute and smoke disappeared as soon as revs put on. Stopped again and some white smoke but less. Did revs 2 more times and smoke lessened to nothing and nothing since although have not taken to max revs again. Water flow fine. Could this be a condensation thing which occurred when motor running hotter or something else. No problems with idling etc. Motor has done about 23 hours. Any advice would be great. Karen