Conan_2022
New member
https://www.youtube.com/watch?v=GuGZ3cmSPSE&index=27&list=FLBF6CEegwFUJ0g8dhUQKZhg
Hello everyone! I write from Italy for the first time and I congratulate everyone for this beautiful forum! I write because I have a problem with my Yamaha 40 CV 2-stroke VETOL of 1997 that has the same problem of video on youtube. The Swedish owner of the video engine, could not fix it. Until today, no mechanic has managed to solve my problem that unfortunately does not always present itself. In fact, during the tests in the tank with the test propeller, the engine has always been fine. The fault occurs only during the sea trials and even in this case, it happens that the engine is good for some time and sometimes go wrong again. without warning. I replaced all the petrol tubes, filters and Jacks, I cleaned the carburetors without ever giving up. We replaced the control unit but we did not have any results ... A very strange thing: the stroboscopic pistol works up to 1500 rpm and then goes off, but the engine goes up to 5300 rpm. What could it be? Do you experience a similar defect? can you give me an advice? Thank you so much for the answers!
Hello everyone! I write from Italy for the first time and I congratulate everyone for this beautiful forum! I write because I have a problem with my Yamaha 40 CV 2-stroke VETOL of 1997 that has the same problem of video on youtube. The Swedish owner of the video engine, could not fix it. Until today, no mechanic has managed to solve my problem that unfortunately does not always present itself. In fact, during the tests in the tank with the test propeller, the engine has always been fine. The fault occurs only during the sea trials and even in this case, it happens that the engine is good for some time and sometimes go wrong again. without warning. I replaced all the petrol tubes, filters and Jacks, I cleaned the carburetors without ever giving up. We replaced the control unit but we did not have any results ... A very strange thing: the stroboscopic pistol works up to 1500 rpm and then goes off, but the engine goes up to 5300 rpm. What could it be? Do you experience a similar defect? can you give me an advice? Thank you so much for the answers!