Make sure the catalytic converter/muffler have good outflow. Just something else to check. A pack rat built a nest in the air intake of my 94GMC 350, made it run lean, got the converter so hot it melted the matrix inside and plugged up converter and fried the oxygen sensor. Very similar thing on a mid 80's Toyota car I had, but never knew why that one fused the converter. Service guy knew immediately what it was, so I guess it was happening to others. Similar symptoms, at first you could start and run but after a few miles the back pressure would dog down the engine.
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Today's Featured Article - Tractor Profile: Allis-Chalmers WD45 (Gas Version) - by Staff. Beginning production in 1953, the WD45 had the same general look as the WD tractor which was produced earlier - but was much more powerful. This was due to the new 4-cylinder "Power Crater" gasoline engine with a 4 x 4-1/2 inch bore and stroke. Some people feel this was one of the most significant tractors offered by Allis-Chalmers in those days. Nothing in its weight or power class could match its performance. In 1954 they began offering the WD45 with the new "Snap-Coupler&quo
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