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Old 05-22-2016, 10:59 AM   #21
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So the only check has been looking at the sight tube? Was there definitely liquid in there?
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Old 05-22-2016, 11:06 AM   #22
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First confirm it is water and not undyed fuel, which can be pretty clear in a sight tube.

Also look at the deck fill. Is it in a position where rain and/or runoff can contact the cap? Some designs are such that even with a bad oring it is pretty impossible for water to get in. Other designs have water on top of them routinely and absolutely count on the oring to seal. which is yours?
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Old 05-22-2016, 11:09 AM   #23
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Quote:
Originally Posted by Xlantic View Post
To narrow things downs:
- Is it freshwater or seawater?
This is what I was wondering as well....
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Old 05-22-2016, 11:22 AM   #24
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Quote:
Originally Posted by Ski in NC View Post
First confirm it is water and not undyed fuel, which can be pretty clear in a sight tube.

Also look at the deck fill. Is it in a position where rain and/or runoff can contact the cap? Some designs are such that even with a bad oring it is pretty impossible for water to get in. Other designs have water on top of them routinely and absolutely count on the oring to seal. which is yours?

I'm going to the boat today to pull a sample of the mystery fluid. The deck fill is under the covered side deck so not directly in the rain. I replaced all four o-rings last year.
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Old 05-22-2016, 01:14 PM   #25
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If fresh water, check with swimming pool test kit for presence of chlorine. Rain water will have none.
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Old 05-22-2016, 01:17 PM   #26
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I vote for fuel.
Just seems more likely it's had fuel in there the whole time.

And hope so to.
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Old 05-22-2016, 01:34 PM   #27
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Kolor Kut is a water finding past. Put some on a stick or 1/4" flexible copper line.
http://www.amazon.com/Kolor-Kut-Ounc.../dp/B00905UC5E
Easy test. I used it in my above ground oil tank, since removed.


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Old 05-22-2016, 03:31 PM   #28
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Second reason it is full, fuel shutoff while fueling.
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Old 05-22-2016, 03:43 PM   #29
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Originally Posted by caltexflanc View Post
So the only check has been looking at the sight tube? Was there definitely liquid in there?
Maybe it's empty, and the vent lines are kinked?
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Old 05-22-2016, 05:35 PM   #30
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I pulled some mystery fluid from the tank and it appears to be diesel fuel. Here are two pics, the first is the site tube after putting in a few gallons at the dock then realizing it was full. You can see how it isn't red. The second is today after opening the site tube valves, now red top to bottom.
Click image for larger version

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ID:	52278Click image for larger version

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ID:	52279

Apparently the dye faded in the site tube and I forgot I had filled it three years ago. No excuse for that.
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Old 05-22-2016, 05:54 PM   #31
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Just a thought if you polish your fuel where dose the waste return go ?
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Old 05-22-2016, 06:05 PM   #32
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No valves on those sight tubes?
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Old 05-22-2016, 06:09 PM   #33
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No valves on those sight tubes?

Yes there is one at the top and one at the bottom.
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Old 05-22-2016, 07:09 PM   #34
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Is there a bottom drain tap to pull off the bottom contents into a clear container just to be sure there is no water? If not use the test kit posted by JDCave and watch your Racors.
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Old 05-22-2016, 07:14 PM   #35
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Quote:
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Is there a bottom drain tap to pull off the bottom contents into a clear container just to be sure there is no water? If not use the test kit posted by JDCave and watch your Racors.

Yes there is a drain valve. I will do that later this week. Thanks.
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Old 05-22-2016, 07:50 PM   #36
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I would test salt water vs. fresh and tap vs. rain as mentioned above. That can certainly narrow it down a lot for you. Even if kept in "fresh" water, test for "salt content" to differentiate vs. tap and rain.
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Old 05-22-2016, 08:01 PM   #37
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Quote:
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Yes there is one at the top and one at the bottom.
Sorry about the thread drift, but this got me questioning about what I do with my sight tube valves. When away from the boat I keep them closed, and when on the boat I leave them open (the lower ones are not that easy to get to) so I can read them easily when on a trip.

What do others do, or recommend?
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Old 05-22-2016, 08:02 PM   #38
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Surprised at the fuel dock

Quote:
Originally Posted by drb1025 View Post
I pulled some mystery fluid from the tank and it appears to be diesel fuel. Here are two pics, the first is the site tube after putting in a few gallons at the dock then realizing it was full. You can see how it isn't red. The second is today after opening the site tube valves, now red top to bottom.
Attachment 52278Attachment 52279

Apparently the dye faded in the site tube and I forgot I had filled it three years ago. No excuse for that.
Chuckle! I had a senior's moment last winter with my site tubes for the same reason. The fuel was colourless. I had a slight weep from the sight tube valve and thought the whole tank had disappeared into the bilge and pumped over board. Scared the poop out me. Turns out the tank was near full.

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Old 05-22-2016, 08:03 PM   #39
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I'd go with the dyed versus undyed fuel. The diesel I buy for my home generator is yellowish as it comes from the filling station locally.
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Old 05-22-2016, 08:06 PM   #40
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I'd go with the dyed versus undyed fuel. The diesel I buy for my home generator is yellowish as it comes from the filling station locally.

Well that's what the fuel truck in Sointula delivered. It's the cheapest fuel in BC, so you get what you get. Not sure I'd do the "Once a week fuel dock dance" ever again though. We waited 4 hours for fuel.


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