Re: 2003 mercury 75hp not running right
People treat anything with an engine with varying degrees of care. I've known people (one was a director of engineering) who never changed oil in there cars. They just added oil when needed and changed the oil filter at 5000 mile intervals or not at all. When the car dies they buy another. Do you think they would treat their lawn mower, boat, weed whacker or snow blower any differently. Just because they owned 10 or 11 of anything does not mean they know how, or even want to take proper care of them. An since in this case, the rig was not new, the new owner has no idea what care the boat had previously. In my view, if you must remove a carb to investigate a problem, it only makes sense to install a new kit. It's not like one must mortgage the farm to pay for this. Up here in the tundra, engines are layed up from November until late March or Early April. Many of them are layed up with absolutely no thought given to treating fuel, fogging the engine, draining and refilling the lower unit and checking for water. Then in the spring they are amazed that the battery is dead or cracked, the lower unit is cracked, the engine won't start or is seized, and the list goes on. Yes -- carb rebuilds can and very often are required on a four year old engine. As older engines are gradually leaving circulation, the newer engines in this area are having fewer fuel system problems since our fuel is an ethanol/gasoline blend. If one has a fiberglass fuel tank however, that's whole "nuther" story.
