Looking for experienced thoughts. This engine is in an excavator. Machine sat for about 2 weeks, temp was 90F. Fired machine and it lit as quickly as normal but immediately was stumbling. I let it idle like that for about 15sec, then turned up the throttle a touch and it cleaned up and not one issue after that. It's currently on a job and cold starts are fine. However, this concerns me because something was certainly up and I need that machine reliable. It never starts up like that!
There is a lift pump/filter housing about 5ft from the tank. Fuel is pulled from tank, then pressurized to go through the filters and pushed to the injection pump. There is a small pressure hose on the filter housing that is wet with fuel, but not really active. I first thought it was on the vacuum side, thinking that is likely pulling a little air, but believe it is pressurized. However, I guess possible it allowed a little air in? Not entirely sure how, but....
I guess I am trying to pin this little issue down because stuff like this will bug me and probably pop back up at the worst possible time.
There is a lift pump/filter housing about 5ft from the tank. Fuel is pulled from tank, then pressurized to go through the filters and pushed to the injection pump. There is a small pressure hose on the filter housing that is wet with fuel, but not really active. I first thought it was on the vacuum side, thinking that is likely pulling a little air, but believe it is pressurized. However, I guess possible it allowed a little air in? Not entirely sure how, but....
I guess I am trying to pin this little issue down because stuff like this will bug me and probably pop back up at the worst possible time.