JD4240
I recently rebuilt the engine as the compression was low and I could not get it started on a 75-degree day. Now the tractor will start right up on a 40-degree day almost instantly. I still have one issue.
When it starts, it will skip / miss fire for the first 5 seconds or so and then smooth right out. The tractor did this prior to rebuilding the engine if the temperature was below 60 degrees, but if the temperature was in the 70’s is would not miss.
The injection pump was rebuilt in 2013 and at the same time, the injectors were cleaned and new nozzles installed. Also the lift pump was replaced a few years ago.
Ideas?
I recently rebuilt the engine as the compression was low and I could not get it started on a 75-degree day. Now the tractor will start right up on a 40-degree day almost instantly. I still have one issue.
When it starts, it will skip / miss fire for the first 5 seconds or so and then smooth right out. The tractor did this prior to rebuilding the engine if the temperature was below 60 degrees, but if the temperature was in the 70’s is would not miss.
The injection pump was rebuilt in 2013 and at the same time, the injectors were cleaned and new nozzles installed. Also the lift pump was replaced a few years ago.
Ideas?