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Old 02-12-2018, 10:02 PM   #1
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Pre ULSF & BIO-Fuel Aqua-Hot & Oasis units

Just a heads up on coaches that were built with the Aqua-Hot & Oasis units prior to the introduction of ULSF Bio-Fuel mixtures..
The earlier fuel lines are not comparable with this newer fuel blend.
Found that my Aqua-Hot was failing to fire off intermittently... most times when during heavy & constant usage (cold/below freezing weather..was blaming the burner/fuel pump/igniter coil..
Nope... none of the above
fuel lines from the tank to the filter to the burner had deteriorated far enough that it was "sucking air" thru the walls of the hoses...We found a steady stream of air tiny bubbles in the see-thru glass bowl @ the fuel filter.......replaced all the lines and...... WALLAH!
We HAS Heat!

Will be replacing the generator and big engine fuel & return lines in the near future
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Old 02-13-2018, 08:11 AM   #2
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Any idea on what build timeframe that may be?
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Old 02-13-2018, 09:53 AM   #3
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Quote:
Originally Posted by les.warden View Post
Any idea on what build timeframe that may be?
I'm thinking Biodiesel blends became common somewhere around 2007
or 2008?
It just depends on when each coach/chassie mfg's changed to Bio friendly fuel lines.
Our coach is a 2002 and I've seen 2005 and 2006's that have had to change out their fuel lines, so I gather it is just a matter of time that this will be a more common occurrence as coaches age and the amount of fuel consumed.
At least our coach has a clear dedicated channel that the fuel/air & electrical lines run thru.
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Old 02-13-2018, 09:54 AM   #4
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Thanks!
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