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UBoat4

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Posts: 26
Reply with quote  #46 
Thanks, Steelhead.  Yes, the USCG and WSP support during those boat movements is impressively robust...for understandable reasons.  To some, major, but to me, minor inconveniences of the waterway and canal bridge, small price to pay for national security, IMHO.
Thanks for the suggestions.  I did inspect the LP nipples closely and carefully.  I've read that they are fragile and crack somewhat easily. I will keep the VST assembly and likely pick up a spare LP for the shelf, probably a couple hundred $ well spent on sustainability. Are you suggesting a permanent section of clear hose between fuel filter and VST?  If so, what type of clear plastic or vinyl can withstand fuel-contact for any reasonable length of time?

PhilH12 -  Thank you for your input. During the successful test under load, the vac gauge was reading approx 3" Hg.  The lower HP pump Schroeder valve pressure read approx 5 psi.  Switching gauge location to upper HP valve, pressure was high twenties, approx 28psi.  I'm thinking these are good.

Thanks, Beernuts.  Yes, I was fortunate (lucky) to observe the drip...I don't think I would have found it without lightly pressurizing the system ahead of the lift pump.

Happy 4th of July, fellas.  Many, many thanks for all of your assistance.

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U Boat 4
steelhead

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Posts: 4,087
Reply with quote  #47 

Not permanent clear hose section,  cut and put in double nipple and reconnect normal hose with Oetiker clamps for long hose life.  Nipples allow adding clear hose for yearly tests, saves frustration.

Any hose that is put in permanent has to be gasoline ethanol proof, hard to find clear hose that meets that requirement in crystal clear.

PhilH12

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Posts: 3,493
Reply with quote  #48 
Not sure about any clear hose being intended as a permanent install.  Testing only.

The 3" of vacuum is a bit high, as you never want to see it above 4".  When I re-did my whole fuel system - pickup tube, lines, bulb, and Racor filter with vac gauge added, my little 90HP would barely make the needle move off of the zero stop.  If your pickup tube has the "recommended" sock/filter at the bottom, it may be worth a peek to see if it's all clean and clear, assuming that all the hose linings, etc. are in good shape.  They can deteriorate from the inside while looking fine on the outside.

Happy Fourth!

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
UBoat4

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Posts: 26
Reply with quote  #49 
Ah, okay, thank you for correcting my misunderstanding. The suggestion was just to install brass hose barb in line as an access point FOR testing using a clear hose as needed.

I took a pic of the gauges at the time. Looking again, I guess because the gauge was a little sideways, The actual vac reading was more like 2, maybe less (cheap gauge).

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U Boat 4

PhilH12

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Posts: 3,493
Reply with quote  #50 
That should be fine then.  [thumb]

Surely not trying to get you "chasing your tail", but many threads on here about the Racor vac gauge with telltale needle screwed into a port on the Racor fuel/water filter.  Just check it at the end of each day's fun.  The telltale stays at the highest point that it's seen.  Re-set to zero and have more fun the next day- until you see that telltale needle at 4" or more.  Then start checking whether the filter element itself needs changing or something else needs attention.

Even that wouldn't have helped in this case, but is a good step (I think) to prevent fuel starvation.  Just food for thought going forward.  [wink]

Enjoy!

Phil

__________________
Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
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