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Old 06-17-2020, 05:01 AM   #21
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I think if you tanks are so bad that the ball in the Racor is getting blocked, it's time to pause and have the tanks professionally cleaned.
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Old 06-17-2020, 05:49 AM   #22
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Greetings,
Mr. CS. OK. So you've already had the fuel polished (post #15). You either had a bad polishing job or you've got an ongoing water contamination problem.
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Old 06-17-2020, 06:33 AM   #23
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Originally Posted by Codger2 View Post
That's the plan!
The duels on the mains have a gauge with a tattle tale.
BIG fuel filters!!
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Old 06-17-2020, 08:56 AM   #24
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There was a very informative thread on this subject on the downeast forum last week. Many commercial guys use a product call AJX. It basically dissolves the bacteria (not algae) without the precipitate problem. Google the product - there are several videos.
I Googled it and here is a video.

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Old 06-17-2020, 09:47 AM   #25
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Greetings,
Mr. CS. OK. So you've already had the fuel polished (post #15). You either had a bad polishing job or you've got an ongoing water contamination problem.
Sounds to me that RTF has it right! Definitely check for water and stop any leak (sources) or this will continue.
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Old 06-17-2020, 10:51 PM   #26
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How do you know this is bugs, as opposed to asphaltenes related issues?
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Old 06-18-2020, 02:46 AM   #27
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I Googled it and here is a video.

I don't see any water in the tank. My understanding is critters grow at the boundary layer of diesel and water. If so, what is the crud in this tank?
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Old 06-29-2020, 09:16 PM   #28
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If the deposits are "large" then you can add this fuel strainer to your system.
https://www.parker.com/Literature/Ra...120_Series.pdf.

That's what I have installed on mine as a "pump debris safety"..The advantage of this approach is that the fuel quality can be seen at all times and the strainer bowl can be removed and cleaned when the strainer is clogged. It's a rather large mess so it will only remove the larger debris, leaving the filters to deal with the smaller stuff. This will reduce the filer changes and save money - in addition to a safer system.

I think this product will do what the the OP asked about initially.
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Old 06-30-2020, 05:52 AM   #29
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In the past the fuel strainer consisted of a 1 quart glass jar with a cloth sock .

The water would not go thru the special cloth , and form droplets in its surface .

When the drops were large enough they would fall to the bottom of the jar.

When ever the water & crud became deep enough , the engine would be stopped , or fed from a different source, the glass jar simply unscrewed and contents dumped into a pail , reinstalled and when the supply valve was opened, fuel filled the jar, the last twist tightened it ,which bled the system.

Very simple and worked well for boats with no sump in the fuel tank.
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