John Deere 8960 tractor injection pump problems

John Deere 8960 tractor injection pump problems Problems

Hello again out there to all the John Deere family and friends.

The last time I was here I was having trouble getting fuel problems with this 2005 John Deere 8960 4 × 4 tractor.
Since then it has changed ownership to me, but still has the problem of pulling fuel through the injection pump to the injectors.

I can get the fuel to the pump inlet, but it doesn’t go through the pump for some reason.
When I first drained what little fuel I had in the tank into a couple of 5 gallon buckets, I noticed that after the fuel settled it looked like a bit of algea or whatever. I also noticed some condensation on the fuel and on the f / w separator filter.

We clean the tank, we change the filters and this is where I am confused. If fuel is pulled into the pump, but not through it to the injector lines, isn’t the pump still working? But maybe it stopped with the garbage or something?

Someone help me please. Any and all comments are greatly appreciated …

A rotary injection pump has the outlet lines to the injectors arranged in a circle at the end of the pump.
The pump must NOT be removed from the motor. It has to be timed first or you will have the problem of timing the motor to the pump.

edit: The 8960 has a rotary injection pump … The timing window is a square with a point held by two screws.

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John Deere 8960 tractor injection pump problems