[Archived]

Tim,

This may not be related but I had the fuel come out for the first time recently (in 3.5 yrs.). What I did differently was, I set the handle lock on the slowest fill as it approached full (put in 130 gallons). I was not holding the fuel handle.

Occasionally, I have filled on ‘both’ sides and never had the fuel come out (never had burping back flash). Even when I have filled just on the driver’s side, no burping.

The handle didn’t recognize that the tank was full on slow fill and a little bit ran out. So, in the future, I’ll leave it on ‘high’ fill and let the handle click off.

Maybe using ‘high’ fill so the foam will let it click off before tank gets too full?

Safe travels,

Mark

[Andy]

Can you also fuel from curbside? If so, wonder if the same thing happens. Worth a try and if it works better from curbside, just use that. Thinking maybe the burp has to do with the plumbing involved in buses with dual fuel-fills.

[Archived]

In my experience the burp splash bath is simply related to the speed of flow. So I never use the high speed pumps that trucks use. Opening the opposite side filler to act as a breather did not help.

[Art]

Tim…

The only thing I have found that helps is to put the last 10 or so gal in “with a straw”. By that I mean very slowly. I never use the “on clip” on even the slow setting on the fuel nozzle, especially if filling at a high volume truck pump. But even the dribble approach is not an absolute…I still get burps occasionally. I’m always ready to jump/step away during a fill. I seemed to notice less foam & burping with diesel that has lower levels of ethanol, but that may not be the case either, and these days we don’t have many options in that regard anyway.

I’m surprised that your coach has the problem…I had thought it most often occurred in 90’s vintage coaches.

[Archived]

Don’t feel bad Tim, mine burps every time no matter what flow rate. I now put paper towels in the compartment while fueling and that keeps it from splashing out and down the side. I’ve had 6 Prevost’s and the only ones that didn’t burp were the 40 footers.

[Deleted User]

Mike,

Hoping this is a misstatement “I seemed to notice less foam & burping with diesel that has lower levels of ethanol” as I have never run across any diesel that is advertised as containing ethanol!

[Per]

Is it possible that ambient temperature and humidity levels could have anything to do with this?

[Michael]

Alvie…

You’re right…to be technically correct, I should have said biodiesel.

[Davy]

Ours will burp back if the fill is slower than wide open. Especially with the truck pumps. I now always pump full throttle and haven’t had a burp in a while.

[Archived]

I have no answer for why some coaches burp but I believe there is a fix offered by Prevost that addresses the problem I am going by memory but I think I recall a member installing the fix which was not very easy and which provided a different means of venting. It solved his problem.

Having said that I know some coaches are prone to burping fuel. My passenger side fill (only) 1987 XL never puked fuel under any circumstances or flow rates. My 97 two side fill XL puked almost 100% of the time regardless of flow rate and after trashing a pair of jeans and Birkenstocks I learned to wait for the nozzle to click off, count to about 3, watch it puke fuel (either side) and then remove the nozzle. I believe the amount of fuel that puked out related to phases of the moon.

My 06 two sided fill has never puked fuel no matter which side I fuel from or how fast the fuel flows.

Despite the annoyance of puking fuel I would love to have the fuel system of the 97 because it held 298 gallons and I really liked being able to go at least 1800 to 2000 miles between visits to truck stops. I also liked that coach’s 7.5 to 8 MPG.

[Tad]

Jon, wanna trade? We have that fuel system and mileage, and I know a guy in Evansville Indiana that will put slides in it for you.

(no chance)

[Archived]

Shoot Dan, I keep expecting to see 2 slide Legendary in your sig box.

[Tradewinds Coach & Marine]

Birkenstocks?

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Tradewinds Coach
Kyle Bennett (Service)
Brian Miller (Sales)

[Corey]

Thanks for the replies everybody.

Just to reiterate:

Both times that I have refueled so far the fuel pump “clicked” off just fine. The Double Burp Fuel Back Splash comes after some short (½ to 1 second maybe) delay and comes out in 2 separate “waves”. The first time I was filling faster than the second time at shut off.

The fist time I experienced the Double Burp Fuel Back Splash it was a complete surprise and I was soaked with fuel from my armpits down to my knees. So there I am in a truck stop, soaked with fuel, standing outside of our “new to us bus”. I clean up as best I could right there next to the coach with the spectators laughing their ***’s off. I then get a change of clothes and go into the truck stop to wash, clean up, and change clothes. So my first time refueling our coach was not a good experience to say the least.

Caution: Whining Ahead: I’m having a difficult time believing that that with all the Prevost coaches, and conversions, out there that there isn’t a fix for this.

I’ll try filling from the curbside.

I’ll try slowing the fill rate even more as the tank approaches full.

One suggestion was to fill at a faster rate. While it may work, or be a setup for more spectator entertainment, it would actually scare me to even try it.

I’ll try try rig up a splash guard. Paper towels maybe.

I’ll research the “fix by Prevost” that Jon mentioned.

If anybody has any other ideas, please let me know.

[Archived]

I use the paper towel/count to 6 method. Doesn’t matter either side, still the same result.

I always suspected the angle of the filler neck was not steep enough when filling the tank near the top, hence the non vented caps are well needed when rounding a corner.