HI all. I have a 1990 evinrude 150 hp v6 that runs absolutely great. Except when I need to start it up after warm up I need to trim it up a little so it will start. I have no problem during this but just wanted to know if this is normal.
I don't have to do that with my engines. When you trim your engine up, that action reduces the backpressure of the water at the prop. Less water trying to keep the exhaust inside the prop, the easier it should start. Engine compression can have something to do with this, so check it.
Also possible the floats in the carb bowl are not adjusted correctly. When you tilt the engine, it gets gas. When it's vertical it may be starving for fuel. You might also find that to start it when vertical, that you could prime the fuel hose bulb to get extra fuel into the carbs. In any event, it's not normal to prime it each time you start either.
I'd say the carbs will feed the jets best when level, and that they're designed to fuel at significant angles. I'd agree that maybe it needs the bulb pumped, and that that wouldn't be normal.
OP: are you raising your idle for warm re-starts? I've always found it necessary on mine unless the re-start is within a very short time since running.
Okay, it sounds like the carbs. But someone told me it could be a fuel problem. Possibly a bad gas line or clamp getting air in. What are your thoughts?
