Horribly lame question, I'm sure. But how do I know if my 2-stroke, 6hp, Evinrude outboard engine is fuel injection? I replaced the fuel line today with tubing that says "not suitable for fuel injection". The guy where I bought it said it would be fine, but although it seems to work great, the squeeze bulb doesn't get hard even after a bunch of squeezes. I thought that is should. But I'm unsure b/c so far the engine starts on first pull. But, I want to make sure I have the appropriate tubing.