My G5200 has been running a bit rough from time to time, almost like it is missing. It started every once in a while, now it has continuously worsened. I have noticed that the fuel pump is making a loud clicking noise when I turn the key to warm the glow plugs. Any suggestions or questions? If you would like to hear the noise second hand, shoot me an email address and I will forward you the sound recorded via Iphone. It seemed to be worse when I was putting a load on the tractor, full throttle with the mowing deck engaged. Now the mower seems to not want to start for me at all. I believe it is due to needing a new fuel pump, but before I waste anymore time or money I figured I would give the good ole OTT forum a shot.