Hello All,<br /><br />I hope someone may have had this problem before because I'm stumped.<br /><br />I Have a 1970 115 Evinrude electic shift on a 16ft canbar bowrider.<br /><br />I tuned it up in the driveway uning a 45 gallon drum (found cups jut don't do it)and it ran great after setting the link and sync and adjusting the timing advance.<br /><br />Took it out on the lake sunday started great but when I put it in gear it's like 2 cylinders stop working and if I throttle it up too fast it will stall but if I open it up slowly, About half throttle all 4 cylinders kick in and away it goes and it runs great until you throttle it back. If you throttle back too fast it stalls if you throttle back gradually it slows down and at half throtle again it's like it is running on 2 cylinders again if you shift into neutral it Idles and throtles up just fine.<br /><br />I'm at a loss any input would be great.<br />Thanks <br />Brad