I have a NEW o.s. max la .25 motor on my air boat i have troubles starting it it seems i have to prime it by putting a couple drops of gas in the card sometimes it fire right up and runs great other times it wants to start but only runs for about4 or 5 seconds and after about 5 mins of trying to start the darn thing it fires up. It runs fine when i get it started, the only prob i have is getting it started!!!!!