40 HP Mariner Magnum "plugged up"

[CRAZYEYES]

I have a 94 mariner magnum inline 4 cylinder that wont idle very well. I went camping about 3 weeks ago and brought 6 tanks of gas and realized that one of our old OMC metal cans that had not been used in a while was full of rust!!! Too late, the motor runs plugged up after that, Starts hard and wont stay idleing. I just bought this engine this year and have run about 400 gallons through it. Would some seafoam help me or am I going to need a new fuel filter and also is there maybe just a screen/filter coming out of the hose that could be plugged. I really dont know the engine that well cause i just put it on this year and want it to get me through the weekend then I'll drag it to the marina and have them look it over before winter.

[hydro]

Check the tank for a screen on the pickup, if there it is likely plugged, but may have prevented gink fro going to the motor. The motor has a filter that you can try to clean out. Last, take it in this winter and have the filter, fuel pump, and carbs gone through.

Get rid of that tank.

[boatfixer]

Im betting on a complete cleaning of the entire fuel system and replacing the filter. I wouldnt waste a penny on sea foam at this point.

[CRAZYEYES]

Kind of what I was expecting. Thanks for the input!