MOST of these posts have good info. It COULD be any of a number of isssues, but the most likely culprit would be the Glow Plug Contoller/Switch/Relay/Module, what ever you want to call it. As mentioned by others, I recommend using Motorcraft parts. We’ve seen too many problems with the not-much-cheaper parts. The DY861 unit is $50 from RockAuto, ZD11 Glow plugs $9.47/each, CM4884 Harness $52.
Another bit of advice, resist the urge to use starter fluid. It can swell the end of the glow plugs making them difficult to remove and cause the end to break off in the cylinder when trying to remove them.
And, I can’t resist the correction, but the 7.3 PS is a HEUI injection system, not IDI, and therefore foes not use an injection pump.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that�s wha
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