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310 German
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Posted by Mike Shultz on January 09, 2001 at 08:52:13 from (209.50.141.75):
We replaced the gas engine that was in our 756 about 6 years ago with a 310 german diesel that was out of a cotton picker. After we put it in, it always smoked and carried on, and was weaker than the gas we had replaced. We figured that it needed overhauled, and when it started to leak water into the oil, we decided we might as well overhaul it. We overhauled it three years ago, and when we put it all back together, it ran just as bas as it did before. We had everything checked over - cam, injection pump, injectors, head, crank - everything. It throws lots of blue smoke - especially going downhill being pushed. It doesn't use any oil. The muffler almost slobbers with unburnt fuel. Reluctantly, we took it to our local dealer and they took doublechecked everything that we did, and still no better results. They put on a new fuel pump, and it maxed out at 70 hp on the dyno. That was as much as they could get out of it. This summer, it started to leak water into the oil again. We just tore it down this week, and one of the sleaves pitted all the way through at the o-ring at the bottom. I think that's pretty sad - genuine IH replacement going bad in three years!. But that can be fixed. What we need to figure out is what is the matter with it that it does't run right. The dealer has cross referenced all of the parts from the cotton picker to the tractor 310, and the only thing internally that he has found different it the valve springs. Everything else he claims is identical. He's pretty good with that stuff, but could he be missing something? If so what? It acts like it is starving or air. I've used other tractors with the same motor that have impressed me, but this is less than impressive, and getting disgusting. Before we put it back together this time, we want ti tto be right. Thanks for any help.
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