86 Johnson 70hp with VRO disabled...<br /><br />It ran fine all weekend pulling tubes mostly high RPM 4.5k to 6k and went through 6 tanks of gas.<br />Though it did idel a little roughly and had a little low end vibration under 1.5k <br /><br />Ran fine all morning and after lunch we had no power at WOT it would only get up to about 4k RPM<br />just enought to plane. We did not change tanks or mess with fuel lines.<br /><br />It ran Up for a few seconds then down then up and then down, pumping bulb helped a little as did pushing in choke. (This mean an air leak ?)<br /><br />I did have a similar problem last month would not get over 3k rpm and marina said water in fuel. (so I changed to their gas station) could this be air leak all along ? Should I replace tanks and lines and add a water filter ?<br /><br />Compression and cylinders looked since he had to put in a helicoil...(due to my heavy hand) I guess I will take it back to marina for this reason.<br /><br />I know that there are fifty other posts with a similar problem up here but none that would run one minute and not the next.
