Mike Scott-HT
New User
Ok I have a Yanmar 1500 never had any issues until I put some fuel in tank that I think had some water in it. I drained tank and lines put new fuel in it. I also changed all filters. Now it runs perfect for about 40 min and it loses power if I turn the bleeder screw it revs right back up and will run about ten more minutes. If I turn tractor off let it set it will run 30-40 minutes again and lose all power until I turn bleeder screw again. It seems to be getting air built up. I replaced all rubber lines the fuel bowl and filter and bled the metal lines. Still same issue. For some reason it will run perfect for that first 45 minutes then lose all power when it heats up I’m lost on what it could be
