I have this old 1985 motor that my dad says only has like 2 hours on it. My grandpa had it on his ocean boat as a spare and so its a little rusty. I cleaned the motor and put gas in it and i got it to turn over like right awway but it died in a couple of seconds. I put a new spark plug in it and it still wont't turn over. I think it mioght not be getting gas. should i replace the gas line? What do you guys think?