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Power Strokes
6.4 Tech
LPFP not cycling
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[QUOTE="MT_Diesel, post: 1444098, member: 10422"] Well, I figured it out. Whoever installed the FASS pump left the wiring harness loose in the engine bay and the wiring loom (and presumably the wires) was melted by the exhaust manifold. When I peeled off the melted loom, there was no visible exposed wire or melted insulation but I cut out the suspect section anyway. The fuse for the FASS (wired directly off the battery with a relay) was blown so I replaced that. Fuel pump works now. Now for my question. Since I didn't technically run the system dry and suck air up in the tank, [U]do I need to purge air out of the low (and/or high) pressure system?[/U] I didn't try to start it since I was an ice cube when I finished. Bleeding the low pressure system is easy enough but I don't have the tool to replace the banjo bolt and bleed the high pressure system. I would appreciate any advice. Thanks! [/QUOTE]
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