Ok here goes. I've been working on this 70 hp engine for a guy, he said the motor had been completely rebuilt a year ago but has never ran just right, here is what's going on. At first when I took it to the lake it fired up and ran at wot 5500 rpm then when the engine got warm it shut down, I waited about 30 min it fired back up and went back to the dock, bad power pack, so I replaced it. Went back to the lake head out engine running perfect I run several gallons of fuel out then shut it down, sit about 5 min, engine starts right back up, idles perfect but will not take fuel, as you advance the throttle it stands on it's face and will die if not put back in neutral.. The engine will continue to idle all day and will even stay running in gear as long as you don't try to advance. You can give it a few hours fire it back up and it will do the same thing it will run a full tank of fuel out as long as you don't shut it down and try to go again. I switch the fuel tank so to have a new line and primer bulb, also tried pumping the bulb while trying to advance, no change, also tried choking to get it to go but it just dies when you choke it while running. Any ideas?
