80 gallon fresh water issue

[Sugi]

Just purchased a 2019 242BHSW with the Rocky Mountain package which includes capacity for 80 gallons on fresh water. I have used it twice and have run out of water before the grey water is 2/3 full and the black 1/3 so that is telling me I have used about 40. From what I understand it has two 40 gallon tanks. Is there something I'm missing? It also has the cold climate package so I can't see the tanks because they are covered. Another thing I should mention is the it didn't seem like i put 80 gallons into it. Ive had 40 gallon trailers in the past and it seemed to fill up just as fast.

[TonyCO]

I just had the same thing happen over Memorial Day. From what I can tell the water is siphoning out of the overflow drains. My trailer has two overflow tubes located underneath on the drivers side, towards the front. They poke out about 8 inches. While driving I could see a trail of water and ended up getting to the site with 1/2 a tank. I emailed Jayco and they said take it to the dealer and have them add some tubing inside the tank to stop the siphoning. It looks like a lot of people put valves on the ends of the tubes to keep the water in the tank.

[oldmanAZ]

Welcome to the forum.

I assume you knew the fresh water was full because water was running out of the vent lines, correct? When traveling with a full tank of water, water will slosh into and siphon out of those vent lines. If you search the forum you'll find it mentioned many times.

Folks use a number of different ways to stop the water loss when traveling; some use valves, I use neoprene corks. You just have to leave the vent lines open when filling the water tank. If you don't, the water tank could be pressurized and burst.

[Sugi]

Thanks. I didn't pay attention to the hoses. I will next time. Another thing I should mention is the it didn't seem like i put 80 gallons into it. Ive had 40 gallon trailers in the past and it seemed to fill up just as fast.

[Sugi]

Thanks. I didn't pay attention to the hoses. I will next time. Another thing I should mention is the it didn't seem like i put 80 gallons into it. Ive had 40 gallon trailers in the past and it seemed to fill up just as fast.

[LawnFlamingo]

Originally Posted by Sugi

Thanks. I didn't pay attention to the hoses. I will next time. Another thing I should mention is the it didn't seem like i put 80 gallons into it. Ive had 40 gallon trailers in the past and it seemed to fill up just as fast.

I can't comment on how long this will last, but the flow meter I purchased on Amazon has worked great so far. We have been visiting different campgrounds the last couple of months and there can be a big difference in flow rates at the water fill stations.

We also have the 2 40 gallon tanks and have experienced the siphoning issue after filling.

[Screwby]

Originally Posted by LawnFlamingo

I can't comment on how long this will last, but the flow meter I purchased on Amazon has worked great so far. We have been visiting different campgrounds the last couple of months and there can be a big difference in flow rates at the water fill stations.

We also have the 2 40 gallon tanks and have experienced the siphoning issue after filling. Attachment 50323

I bought one of these too. Was like $12 and a neat tool to help assure your full and nothing is amiss. I also tried it on the hookup at a site to see how much we used when camping on an average weekend. Buy one, throw it in your fresh water tote, if you don’t need it someone else might.

[JFlightRisk]

Our TT has the same two 40 gallon tanks, and they're connected to each other by one small equalizing hose. It does take a long time to fill them. One thing that is a remote possibility. That equalizing hose may be kinked. I can't think of any other way to see what's going on without opening up the bottom. Out TT doesn't have a covering underneath, so we can see the tanks.

[Atlee]

Originally Posted by LawnFlamingo

I can't comment on how long this will last, but the flow meter I purchased on Amazon has worked great so far. We have been visiting different campgrounds the last couple of months and there can be a big difference in flow rates at the water fill stations.

We also have the 2 40 gallon tanks and have experienced the siphoning issue after filling. Attachment 50323

I had no idea a device like that existed. I'm going to get one for myself. Will come in handy when my fresh water monitor quits working again.

[mrSethTaylor]

have to get one of those, I like that for all sorts of reasons