I have a Mariner 40 HP outboard.<br />Model # 40EL0 serial # 430486<br />MY problem is that it is fouling plugs after<br />being run at slow speeds.<br />The engine has an oil injection system that I am not at all familiar with.<br />The plugs appear to be oil fouled.<br />When it starts acting up it will fast idle<br />real well with no misses, but when its shifted into gear it dies.<br />The last time it fouled out the engine had been run at speed for about an hour.<br />Any troubleshooting help or ideas would be greatly appreciated..<br /> Mark 