river-rat4 Posted August 6, 2012 Share Posted August 6, 2012 I bought a 2000 15 hp Johnson short shaft, rope start outboard new from the dealer in 2000. I just was having issues with it running (7/12) and in the process, my OMC certified mechanic (Not same place, but about 55 mile away) told me that it had a 9.9 carb on it. The only difference between the 9.9 & 15 is the carb and the reeds in the intake manifold. The exhaust and everything else is the same. The reeds were not changed or swapped from the factory as the paint was virgin and so were the gasket area, not touched/pulled apart. He suspects that it was swapped out by an employee at the dealer before I bought it. He had a hard time believing it was from the factory. I have always been the slowest 15 hp of the group, but never would I have thought to look at the carb part #. Do you think I have any recourse with the dealer, being it has been 12 years? I think I am SOL! HELP WITH ADVISE, who would I talk to? Service Manager, Store Manager? Any advise on how to approach them? I was thinking of going in person, with the original purchase receipt and motor. The new carb would cost me about 3 bills to buy new, dealer cost is $175.48. If they won't help me out, I am planning on asking if they can sell it to me at cost. (Of course I won't start asking for cost). I also was thinking, maybe, just maybe, they caught some employee in the past doing this exact thing or stealing and they would just take care of me, stating, "Yeah, sorry about that, we had a few like that come through, well swap it out for you". There are more issues with it still and my mechanic is baffled, but I will address this later, unless someone here has some ideas? It idles down great, trolls great, but WOT is like 1/2 throttle or less. We took off the carb, intake manifold, head, lower unit, tested the coil pack, power pack even removed the wires from the coil ,reversed them along with the plug wires and got same result. Seems like the top cylinder is running heavy and the lower is not. If i reverse the plugs the lower cylinder cleans the one that was just heavy and darkens the one on the top. The pistons look good, and the skirts are intact. Wrist pins did not loose a snap ring or anything. It only has one carb! How can this be? Intake manifold is clear. Gaskets are good. Looks like I will address this now, sorry. Hope this all makes sense, I could use the help from any backyard mechanics, or professionals. Thanks for your time and advise, in advance, River-rat4 Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now ↓↓↓ or ask your question and then register. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.