So I still have my 88 F-250 with 7.3 IDI non-turbo on the road. It runs great. One possible problem that is hard to detect is damage from cylinder cavitation caused by failure to maintain the cooling system properly. Not the fault of the owners, Ford sent out warnings to people in the late 90's because they were seeing more and more cylinder cavitation issues. Get some diesel coolant test strips from your tractor dealer and at least check the antifreeze to see if it may have been maintained properly.
Cavitation will cause cylinder damage that pretty much trashes the block. Also, the 7.3 block is a bored out 6.9 block, so the walls are thinner, you can't just bore it and pop new pistons in it, you need to install liners, but this engine does not have liners....
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Today's Featured Article - Diagnosing Engine Difficulty - Diesel Tractors - by Staff. The following suggestions are listed for your assistance. You can make simple adjustments on your tractor that will improve its operation and save you the time and expense of hiring someone to do it for you. Always make one adjustment at a time, and if the adjustment made does not improve the condition, return to the original setting before proceeding to the next adjustment. Hard Starting Cold air temperatures. Insufficient fuel.
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