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Power Strokes
6.4 Tech
Stumped on 6.4. Fuel rail pressure issue.
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[QUOTE="bigfords, post: 1450873, member: 7066"] I guess what kind of has me a little concerned is that while monitoring the FRP, VCV, and PCV, the fuel rail pressure graph starts to fluctuate just before the PCV and the VCV do on the pump. So it looks to me like the PCV and VCV are seeing the FRP fluctuate, and then trying to compensate for the loss/gain that the rail is getting. My main thing is that I don't want to finish putting the pump in and have it do the same thing! lol I think I'm going to throw the under valve cover harness on it before pulling the cab just to be safe. Should have done the harness when I did the FRP sensor... Anyone ever see an injector cause this? [/QUOTE]
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Stumped on 6.4. Fuel rail pressure issue.
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