W8BYA
Silver Member
So my TC-25D which has been a super tractor for many years has started to give me some real issues. I have about 1000 hours on it and I am the original owner.
I was running the tractor for about 10 minutes when it suddenly started to drop RPM way down and could barely keep from stalling. I nursed it back to the house and started to look around. I found I had water in my fuel filter bowl. I went ahead and replaced the fuel filter and bled the fuel line. The tractor started, but once again was running very, very rough and would die after a few minutes. It is very possible my fuel container got rained on and I had a lot of water mixed with my fuel.
To play it safe I emptied the entire fuel tank and put in new, known good diesel. I then bled the low pressure fuel line going into the injector pump. Still no joy. At this point I removed all 3 lines off the injector pump and cranked the engine for 10 seconds. The left most and center output ports were squirting long strong streams of fuel at regular intervals. The right most port had hardly anything coming out at all. I later read that may be normal as it may have to be under pressure to output properly or at all (I am not sure of this however). I then replaced the 3 original lines and bled the air from the lines up at the injectors. This seemed to help and the engine was able to run up to ~1000 rpm for around 5 to 10 minutes before it started to die back down then stall. Once stalled I was not able to start it again. It will try to fire but will not run. That was last week.
I have now bled the upper lines several more times and cannot get it to run properly. While barely running I am able to just crack the nut loose off each line just a tad to bled the line....if I open the nut even a crack too much the engine quickly dies. I have done this to all 3 lines. During all tests I removed the outer air filter and kept only a clean new inner air filter. Any ideas ? GV
I was running the tractor for about 10 minutes when it suddenly started to drop RPM way down and could barely keep from stalling. I nursed it back to the house and started to look around. I found I had water in my fuel filter bowl. I went ahead and replaced the fuel filter and bled the fuel line. The tractor started, but once again was running very, very rough and would die after a few minutes. It is very possible my fuel container got rained on and I had a lot of water mixed with my fuel.
To play it safe I emptied the entire fuel tank and put in new, known good diesel. I then bled the low pressure fuel line going into the injector pump. Still no joy. At this point I removed all 3 lines off the injector pump and cranked the engine for 10 seconds. The left most and center output ports were squirting long strong streams of fuel at regular intervals. The right most port had hardly anything coming out at all. I later read that may be normal as it may have to be under pressure to output properly or at all (I am not sure of this however). I then replaced the 3 original lines and bled the air from the lines up at the injectors. This seemed to help and the engine was able to run up to ~1000 rpm for around 5 to 10 minutes before it started to die back down then stall. Once stalled I was not able to start it again. It will try to fire but will not run. That was last week.
I have now bled the upper lines several more times and cannot get it to run properly. While barely running I am able to just crack the nut loose off each line just a tad to bled the line....if I open the nut even a crack too much the engine quickly dies. I have done this to all 3 lines. During all tests I removed the outer air filter and kept only a clean new inner air filter. Any ideas ? GV