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I have an 89 f-350 with the 7.3 idi, so far I’ve replaced the glow plugs, fuel pump, and the fuel lines but it still won’t start by it’s self. I know I have power and once it starts it runs great so I’m out of ideas, you guys know anything?
 

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What happens when you cycle the glow plugs? Is there fuel in the filter? Is there fuel at the injectors? You either have an air intrusion problem, or something isn't right with the glow plugs. The three things that make fire...fuel oxygen and heat. If you get all three in the proper mixture, you have fire.
 

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I read you have new GPs but have you tested the GPR (Relay) to make sure its sending power to your GPs?

 
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That was a good description.
 
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