Are our holding tanks leaking?!

A couple of months ago, I started smelling a rancid burning urine smell and wondered if our one of our holding tanks was leaking. The smell stayed in one spot near the forward holding tank, but not directly where it was. So we ignored it for a few weeks. Finally last weekend on the boat, I couldn’t stand the smell. In fact, I swore I could smell it everywhere.

So Scott and I decided to investigate. The forward holding tank is located in the third cabin under the bed.

Once we removed all of the bedding and the floor cover, we were able to access the entire tank. To our dismay, there was some sort of stinky liquid under the holding tank. GROSS. Since it is a tight space, we decided it would be me, who would sop up the liquid and dry the space out. This way we could try and see where it’s coming from.

This is a stinky job!

Unfortunately, we had not pumped out recently, so this was a very stinky job! We also checked all of the hoses running to the tank and they were bone dry. After drying out the area, we then flushed the toilet to see if water would appear under the tank again. Surprisingly, it stayed dry.

Scott and I then moved on to the aft holding tank. We assumed it would be the same story – NOT! First off, all you see when you lift up the floor board is a stinky bilge and the edge of the tank! You have to be kidding me!

We assumed the worst!

Determined that we had leaking holding tanks, I contacted my parts department at Union Marine to find out how we could order new tanks. Then we realized, how in the world do we even access the aft tank? There must be an easy access. I contacted Bayliner and to our surprise – no access. Oh joy. Our best option, would be to dismantle the entire bed frame and cut a hole in the floor.

That’s when Scott and I decided to investigate further. That can’t possibly be true! So we tore apart our bed to see what we could find.

Turns out, it is one solid piece. We would have to remove the edging (which would most likely destroy it), unscrew the top and the sides.

What we did discover, is there is an access panel to the water tank. So we used our remote camera to try and see if there was any way to access the holding tank, but it didn’t tell us much. It did indicate we would have to unscrew the bed frame from the inside though!

Option #2

Before we dismantle ANYTHING, let’s make sure that this tank is actually leaking! We know the bilge belongs to the holding tank, so we decided we needed to dry it out too. This time it was Scott’s job to clean out the stinky bilge water and see if it leaks.

To better access the situation, we decided to pump out so that we were dealing with empty tanks. Our plan was to fill up the forward tank with fresh water to see if it ever started to leak.

Surprisingly, there was never a leak in either bilges! What the heck? Where did that liquid come from?? We can only guess that there might have been a leak at one time and after they sealed it up, they never cleaned up the liquid.

The smell is still there!

Back to our original problem – it still stinks in the forward stairway to the cabins. Interestingly enough, that’s also where the vent is. We have noticed a slight corrosion from salt water on the outside vent. Maybe that’s all it is? But it’s not easy to access.

So what’s our plan? Right now, we’re planning on flushing fresh water into both tanks over the next couple of weeks and not using them. Then have them pumped out a few times, so we’re only dealing with fresh water. At the same time, we’ll check the outside thru-hull and see if we can clean up the corrosion. I don’t think we can easily remove it (especially while we’re in the water) . But if anyone out there has dealt with this same issue, we’d love to hear your advice or experience!

Lots of people have also mentioned the hoses can go bad and get stinky. Again, they are not easy to access, so this is a huge job! Obviously, if we were to consider seriously living on the boat, this would have to be addressed right away. We did try to run water thru one vent, but nothing happened. Then we tried to disconnect the vent hose from the tank to see if we could see a clog, but it wouldn’t budge.

Stay tuned for updates as we try to figure out the issue. If anyone out there has successfully accessed their aft tank, please give us your tips and advice. We’ll share as much as we learn with you all too. It could be that they just stink – they are 17 years old after all.

**** UPDATE****
We ended up calling Emerald Harbor Marine to see if they could check the line. Turns out we have an inline vent filter and those need to be changed every few years. (each tank has one, but we only changed the forward vent). We didn’t know we had a vent, because we couldn’t see it. It was located behind the battery bank panel. The labor was the most expensive part of the bill (2.5 hours) and the filter was about $85. Hoping this fixes the smell. Stay tuned!

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As always, thanks for following us on our journey! Next weekend, we are hoping to take the boat up to the Port of Everett if the weather is nice. In our next blog, we’ll share our haul-out at Canal Boatyard.

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Cheers,

Scott & Ally