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1969 Oliver 1750 Diesel Fuel System Problem

Bryan Dempsey I recently purchased a Oliver 1750 Diesel. I replaced the fuel pump( in line) the fuel filter, drained the tank and blew out all the lines pre injection pump. After running for about five-ten minutes it begins to lose RPM's then stalls. If I wait a few moments it starts right back up and runs great for a a shorter time then does the same thing. On the third try today fuel began to pour out of the engine block breather vent. I have a hunch it may have to do with the fuel return line however I would like a seasoned veterans opinion before I go any further. Your help is greatly appreciated.
thepumpguysc Looks like you have a Stanadyne/RoosaMaster pump on the old girl..
Remove the return fitting ENTIRELY from the top of the pump. Now start the tractor..its gonna be messy with fuel flowing freely on the ground. Does it stay running? Probably so...look inside the fitting you removed and you will see bits of black plastic..thats "flex ring" bits that have broken inside the pump.
As far as the fuel flowing from your vent..pull the dipstick..engines probably full of diesel fuel from the drive shaft seals eating into the brass "pilot tube" in the front of the pump. Nothing left to do but pull the pump and have it gone thru. BE SURE and time the engine before you snatch the pump off..Mail me direct for instructions..its easy..

Bryan Dempsey Thank you!


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