Posted by gw1 on January 07, 2012 at 05:35:11 from (174.109.145.48):
I have been working on a 4230 JD that runs perfectly until it reaches operating temperature (approx. 185-190 degrees F.) tractor then starts losing power and pouring black smoke like it is straining. We have replaced the injection pump three times, we have replaced injectors, we have removed the pipe from the intake manifold(non turbo tractor), we have removed the muffler, adjusted valves, there is no binding in the drive train, engine, or hydraulics as it will roll easily to a stop and you can throttle back and engine runs perfectly, we can cut it off and will start right back. Let it cool a few minutes and it will run perfectly until temperature again reaches the 185-190 degree mark. This one has me stumped! We need help badly on this one! Thanks!
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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