7.4 vortec fuel issue

[454cid]

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Did you just do those splices? Those look like the connections are open o the elements. Those connectors are covered in heat shrink sleeves, but are un-shrunk.

 

[Travon]

Yes just recently. Took the other ones off to check wiring. Just haven't shrunk these yet.

 

[Travon]

Ok gentlemen, here's the voltage while running.

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[RawbDidIt]

Ok gentlemen, here's the voltage while running.

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Looks about right for the length and gauge of wire. I'm under the impression that there was a bad part installed somewhere, or there's something small we're not thinking of. Definitely get the right fittings and test your pump and filter to remove them from the equation and move on to the regulator and injectors.

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[Travon]

Yeah, I'm thinking the same. Has to be something small being missed. The injectors
and regulator were tested for leaks before
putting back together. Just dropped the filter
to rule it out, blew air through with no problems.

 

[RawbDidIt]

Yeah, I'm thinking the same. Has to be something small being missed. The injectors
and regulator were tested for leaks before
putting back together. Just dropped the filter
to rule it out, blew air through with no problems.

Stupid question: you installed the filter the right way, right?

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[Travon]

Ha! Not stupid at all. At this point I wish it
was something like that, but no luck.

 

[RawbDidIt]

Ha! Not stupid at all. At this point I wish it
was something like that, but no luck.

That would have been too easy. Have you checked for a vacuum leak?

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[Travon]

Only thing I can see changing is the pcv
valve hose, looks a little rough. Think
that'll be enough to cause my issue?

 

[Schurkey]

Ok gentlemen, here's the voltage while running.

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Is that the alternator voltage?

Is that the fuel pump voltage at the rear of the vehicle, near the tank?