CLEAN the RETURN line across the injector tops. Broken pump flex ring bits will plug that line and cause injection pump trouble. This can be confirmed by running until engine begins to fail, then quickly loose the pump timing cover. If engine speeds up/runs OK WITH the fuel leak but slows/dies with cover tight, it's confirmed the RETURN side is restricted/plugged. Also, the EARLY 4AF/5AF pumps are timed at 10 degrees BTDC. The LATE UPDATED 1AJ pumps are timed at 8 degrees BTDC. The original 3010 and 4010 pumps had no speed advance like the 20 series had, but lots were updated years ago.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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