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Thanks for everybody's input, ran a tank and a half of diesel with added conditioner through it and she seems to be running like it use to. Found out that apparently the fuel cap was sitting on the hood of the tractor and the tank was wide open to the elements, which makes sense cause I could have sworn that I had 3/4 of a tank when I parked it. Guess someone else needed my fuel more than I did, could have at least put the cap back on after stealing the fuel. Wonder if they make a lockable fuel cap for this tractor, anyhow she's running good now.
Problem still not solved, but partially resolved. After looking up the issue on line, it was mentioned that it could possibly be air getting into the suction side of the fuel line so I tightened up everything without no avail. But I did find a loose screw on the injector pump that when loosened further fuel begin to shoot out (tractor running), so I tightened her up and now its better but not 100% yet, its got a lag but it does slowly throttle up, but still doesn't have the power it did before. I read in another post somewhere that the fuel lines could be detouriated inside from sitting so long, could I be sucking air through a bad line? and could anyone tell me where I can get replacement fuel lines for this 4 cylinder diesel?
I figured as much concerning the rich fuel condition or too little intake air, that's why as I wrote in the original post that I had cleaned out the fuel lines and removed the intake air system & exhaust system, thinking this would resolve the issue, it didn't. I've removed the FEL from the tractor so that I can work on it, I have noticed a distinct diesel smell from the oil in the injector pump, also the oil seems to have an almost watery/diesel feel to it. Not sure how diesel would get into the oil of the injector pump, changed the oil, but still wont throttle up. Also, I failed to mention in the earlier post that on start up it idles rough more so than usual until it warms up. I believe you are correct concerning the hydro's but I need to fix the engine issue first before tackling the possible hydro issue. I'm leaning toward the fuel pump being the issue but also wondering if it is an injector problem due to the possible diesel in the oil? Any ideas before I start ripping and tearing it apart?
