so what are you looking at to fix it exactly? do you think it's simply gummed up, are you going to have to take something apart and twist on it or are you thinking part replacement?
When the engine stop solenoid is pulled, there is a bracket for the control rod/control collar mechanism, secured with two hex head screws (small bolts) that are safety wired together. Cut the wire, remove the two screws and then swab it down with....Pro Shot Copper Solvent IV. It really cuts diesel gum, better than ANYTHING I have tried. Even better than cyclohexanone
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Get me an 8 ounce bottle of it using your special license
, It also works GREAT for cleaning firearms, who would have thunk it?
I will pull the fender to get good access but I will not pull the IP. I probably can leave the governor on too (at the end) and just pull the (bypassed) fuel density compensator. If you want, I can reconnect the FDC but if you are only going to run #2 diesel, it is not needed...that much. I do believe bypassing the FDC removes the temperature compensation which HELPS performance in hot weather. Fuel expands when heated, reducing density. Energy is proportional to density, when diesel gets hot, more volume is needed for the same power.
The engine did get to operating temperature and the pressure cap appeared to leak/bubble. But when I sniffed the bubbles, no combustion products were noted. Coolant was a bit blue in color so someone MIGHT have put windshield solvent in it, we can test boiling point to determine and change the coolant if needed.