injector pump adustment - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 03-08-2008, 10:23 AM
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injector pump adustment

I was told that adjusting the injector pump on my 91' 7.3 would increase the power and milage. Can someone tell me if this is true because right now my truck is real slow and can loose as much as 10 mph going up a good hill.
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Old 03-08-2008, 10:33 AM
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yes, that is true. although, i don't know where on the pump that adjustment is located. i used to own an 89, by the time i heard it this, i already sold it. someone should be along soon to tell you where it is.
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Old 03-08-2008, 10:38 AM
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Here is a place I was looking at. I have not tried it was to cold to play outside. http://www.powerstroke.org/articles/...IDI/Page1.html
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Old 03-08-2008, 12:25 PM
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Gatorrollins,
Follow the link above. Very easy to do. No need to take off the radiator hose, it makes a mess. I have a turbo on my truck but made a huge difference. I started by turning up the pump a 1/4 of a turn. I have since turned it up several more times as it is now turned all the way up. It will blow black smoke under full throttle. My MPG went up by a couple mpg.

It's hard to tell from the pictures but the fuel plate is really small. Good luck
Howard
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