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post #1 of 8 Old 04-01-2012, 04:19 PM Thread Starter
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fuel pressure psi?

Guys, whats happening...well, got my system installed (ya i know, been 6months, lol), had the "goin wvo" thread, but figure i'll start new. I'm run'n diesel thru the wvo side to check the leaks. To my surprise, (knock on wood), besides a "minuute" leak from pump, only part i found was the discharge side of puge. Got that fixed this morning. Anyway, main reason is, i installed a cut-off switch to "D" pump while veggie pump is rock'n, whats wierd is though, the fuel bowl is registering psi, the most was 53-ish. Funny thing is, is i got checkvalves on "D" side, and d-pump is off! When i flip the purge, the f/p on both wvoand diesel sides drop to nothing, then back at #'s when purge is off. The diesel f/p side climbs slowly, but still climbs??? Thats the ?, why am i seeinf pressure in the fuel bowl if d-pump is off and checkvalves in place....Thanks a ton guys.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #2 of 8 Old 04-01-2012, 05:09 PM Thread Starter
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Ok, sit'n here rak'n my brain, i thought of this....gonna drain the fuel bowl, leave cap off, flip the diesel pump off, and turn wvo pump on. Gonna let it prime wvo system and SEE if my fuel bowl begins to take on fuel? SOunds like idea that would let me know if my CV's are leaking, right?

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #3 of 8 Old 04-01-2012, 05:40 PM Thread Starter
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...weird, removed fuel bowl filter, drained the bowl, flipped wvo pump, fired truck up, revved motor, and with NO FUEL present nor feeding thru CV'S (THANK GOD), i still registered 60psi on DIESEL side of system...wth's goin on here.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #4 of 8 Old 04-02-2012, 08:42 AM Thread Starter
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Lightbulb

i'm wondering if my signal wires between the 2-sensors are communicating. The wvo sender is located on the "manifold" in the valley, where the other sender(d2) located on the fuel bowl. Both signal wires are sharing the same loom. Gonna disconnect either the ground or + wire from D2, and go from there....only thing i'm coming up with?

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #5 of 8 Old 04-02-2012, 09:25 AM Thread Starter
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Ok, found it. Somehow, the 2 ARE communicating. Disconnected the wvo sender, but ran truck on wvo pump...no reading on D2 gauge...

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #6 of 8 Old 04-17-2012, 05:07 PM
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Glad everyone here could help you figure it out.
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post #7 of 8 Old 04-17-2012, 07:53 PM
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Knowledge is power.

the wires were cross feeding.

I learned somethin'. I wouldn't have thought they would cross feed.

Timmyboy is just too fast
Quote:
sit'n here rak'n my brain
at fixing the problem for us to help.

2005 Excursion 6.0l Eddie Bauer, 175k
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post #8 of 8 Old 04-17-2012, 07:54 PM
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Glad everyone here could help you figure it out.
though

2005 Excursion 6.0l Eddie Bauer, 175k
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