Home › Forum › Ask A Member › ’77 OMC 9.9hp hard start warm › Reply To: ’77 OMC 9.9hp hard start warm
Ok, this is what I have learned. I got it to run in a tank and can start it consistently when warm. It has spark when warm, and will start, but has a somewhat inconsistent idle and is somewhat hard to start. If you pump the primer bulb on the fuel line it makes it start easier and idle smoother. Carb is clean, fuel pump rebuilt, tank vent is ok. I think there is an air leak somewhere.
What do you think? Where would the common place for an air leak be?
Well, I don’t really think there is an air leak…Especially if the engine’s running/idling quality is good….Did you advance the neutral lock out stop link? I don’t think I really understand what you are describing.
You say you can start it consistently when warm….But has inconsistent idle, then you say it is somewhat hard to start….
Are you saying it is hard to start when hot, or that it runs poorly after being restarted when hot?
Did you advance the neutral lock out?
Perhaps you can post a video of the issue you are having.