Truck Stop DEF filling problems

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Joined
Nov 3, 2019
Messages
310
Location
Glendora, CA
RV Year
2019
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43
TOW/TOAD
2017 Ford F-150 Raptor w/AF1 Braking
I’m not sure if this is a issue on my ‘19 Dutch Star or the Spartan chassis, so I’ll start here.

I can’t fill my DEF tank from the remote side (Driver’s) without the nozzle kicking off before even a teaspoon is dispensed.

Spartan doesn’t know of a problem. I had a different hose installed to straighten the inlet a bit more, but still no luck. Nozzle klicks off.

Next week, I’ll have Newmar take one more look but wondering if anyone else has this problem.
 
Joined
Jul 27, 2019
Messages
3,393
Location
Midlothian, VA
RV Year
2017
RV Make
Newmar
RV Model
Ventana 4037
RV Length
40' 10"
TOW/TOAD
2017 Chevy Colorado
I have this from time to time, I have to barely insert the tip into the tank and then it will work. I think the backpressure is making the DEF think the tank is full or something. You just have to finesse the position of the nozzle into the tank. Just just about two inches so the fluid is not coming back out at you and it should work.
 
Joined
Nov 2, 2019
Messages
2,156
Location
WA, MT or somewhere else!
RV Year
2018
RV Make
Newmar
RV Model
Mountain Aire 4047
RV Length
40'
TOW/TOAD
2014 Honda CR-V
The off-side DEF filler doesn't seem to like a high flow on our 2018 MADP. It does fill, but needs to be set on the slowest fill rate. I think the long hose creates an air lock when the DEF flow is too fast.

TJ
 
Last edited:
Joined
Nov 3, 2019
Messages
432
RV Year
2019
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2013 Chevy Silverado 2500HD Crewcab / 2020 Jeep Wrangler Unlimited Rubicon
Today I too had this issue. I found the slowest fill rate worked. I did try adjusting the depth of insertion, but found the fill rate was the only issue.

Thankfully it's a small tank
 
Joined
Nov 3, 2019
Messages
310
Location
Glendora, CA
RV Year
2019
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43
TOW/TOAD
2017 Ford F-150 Raptor w/AF1 Braking
“Tanks” for the help, guys. Yeah, I tried every combination and flow rate, with no avail. It’s not a good design, indeed, because I noticed each time I removed the nozzle to reposition, it had fluid up to the tip...DEFinitely not good. I’m so puny this morning. Or, is it punny? 😬

Head-scratching question: IF...that remote filler was intended for only a gravity fill from a can, then why even have it there? I’ll update you with anything Newmar offers next week.
 
Joined
Nov 3, 2019
Messages
432
RV Year
2019
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2013 Chevy Silverado 2500HD Crewcab / 2020 Jeep Wrangler Unlimited Rubicon
Some fillers are worse than others. Prior to yesterday I never had an issue. Try another brand.
 
Joined
Nov 3, 2019
Messages
473
Location
Fremont, California
RV Year
2017
RV Make
Newmar
RV Model
Dutch Star 4018
RV Length
40’
TOW/TOAD
Jeep Wrangler Sahara
I, too, have had this problem. The only solution I’ve found is moving the nozzle in/out/around until it works. Not very scientific but it is what it is.
 
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