TractorDad3
Member
Greetings and thank you for reading!
My 59 550 Diesel, Serial #79469, pumps out blue/gray smoke. I confirmed the issue with what looks like fairly diluted engine oil well above the crankcase operating level on the dipstick. She spews a bit of this concoction out of the breather tube and leaks a touch at the fulcrum lever shaft port for the throttle lever on the Bosch injection pump.
The mechanical lift pump is refurbished from a 77/88, and therefore I do not believe it is that diaphragm.
The book states it could be a worn plunger or a gasket under the delivery valve. Both concern me, and frankly, I am a bit scared of digging into the high pressure side of the system. But I guess I will need to do it eventually.
I turned down the fuel delivery due to being at altitude, and think maybe that pushed the delivery valve to return line to the tank a bit far?
Any thoughts? Yes I am a novice with diesels, I am sorry.
Any idea which gasket should be replaced? The shop manual does not list all parts in the Bosch injection pump, unfortunately.
Thank you for thoughts/suggestions/direction!
My 59 550 Diesel, Serial #79469, pumps out blue/gray smoke. I confirmed the issue with what looks like fairly diluted engine oil well above the crankcase operating level on the dipstick. She spews a bit of this concoction out of the breather tube and leaks a touch at the fulcrum lever shaft port for the throttle lever on the Bosch injection pump.
The mechanical lift pump is refurbished from a 77/88, and therefore I do not believe it is that diaphragm.
The book states it could be a worn plunger or a gasket under the delivery valve. Both concern me, and frankly, I am a bit scared of digging into the high pressure side of the system. But I guess I will need to do it eventually.
I turned down the fuel delivery due to being at altitude, and think maybe that pushed the delivery valve to return line to the tank a bit far?
Any thoughts? Yes I am a novice with diesels, I am sorry.
Any idea which gasket should be replaced? The shop manual does not list all parts in the Bosch injection pump, unfortunately.
Thank you for thoughts/suggestions/direction!
