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Topic: Help - water leaking into Manifold (P4) Bay (Read 1049 times) previous topic - next topic

Help - water leaking into Manifold (P4) Bay

Looking for ideas as to where this is coming from.
Water is dripping from one or both of the copper lines at the right front corner of this bay. I have had this area wet before, but here on the north Oregon coast in heavy rain it is much worse. In the last 24 hours we have collected almost an inch of water in our collection pan.
We are also seeing wet area on the floor under the cook top, at the back by the coach wall and the right (rear) side by the wall under the fridge.
I shut off the water supply to the ice maker and water filter faucet a couple days ago, so I think that is ruled out.
I resealed the screw holes in the fridge vents on the roof, which looked like they could be leaking. Apparently they weren't causing this leak.
The area behind the fridge behind the access panel is dry.
All plumbing to and behind the toilet is dry.
I don't know where else to look... >:(
Dick, '03 U320 40' Tag, 2 slides, Coach #6075
Full Timers
2009 Honda CR-V

Re: Help - water leaking into Manifold (P4) Bay

Reply #1 –
Consider a leak around a window. We had an obvious leak around one window and easily fixed it with a bit of silicone caulk. Our window leaked to the interior of the coach. A window that leaks into the wall could send water almost anywhere along the side of the coach.
J D Stevens
1997 U295 CAI 36' Build #5085
2002 Subaru Outback
Motorcade 16869
Bellville, TX

Re: Help - water leaking into Manifold (P4) Bay

Reply #2 –
Could it be condensation?  Especially on the copper pipes.
1996 U270
Build #4846

Re: Help - water leaking into Manifold (P4) Bay

Reply #3 –
Dick,

We are in Crescent City, Ca and can relate to the heavy rain. The wind/rain last night was extreme.
One place to check is the dryer vent, if it is in the area. This morning I found a small amount of water in the wash bay. It appears that the plumbing vent on the roof was holding water between the pipe and the vent housing. I drilled a small hole at the base of the vent housing on the gutter side.
The selected media item is not currently available.Bob & Faith Rozek
1997 U320 40'
Xtreme Remodel
2010 Scion XD

Re: Help - water leaking into Manifold (P4) Bay

Reply #4 –
Are those copper lines perhaps for propane, rather than water?  I don't recall seeing copper water lines anywhere in our coach.

If propane, could they merely be a path for the water to follow?  Is the fridge drain possibly blocked and could the dripping be defrost runoff?

Quote from: Dick S –

I shut off the water supply to the ice maker and water filter faucet a couple days ago, so I think that is ruled out.

Oh - warning - if you mean you shut off the cheap saddle valve under the kitchen sink, those are notorious for leaking/dripping from the valve "stem" if you try turning them on or off (ask me how I know ::)  ).  Really poor choice of valve and something we keep meaning to replace with a more robust design.

Michelle
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Help - water leaking into Manifold (P4) Bay

Reply #5 –
Dick, another place  (although you did say no water was visible in the rear inspection cover for fridge) I found a while back that with heavy rain the bottom of the cover (with vent lines in) have a few slots and water was going in there and migrating past the plastic frame then onto the wood floor under fridge. I fill all across rhe vent opening with silicone untill it was higher than the outside edge so water could not get in. It worked for me. If you need a photo let me know and I will take one. If as Michelle say's it is not the tap (cheap crap) try checking around the top of window seal for any gaps as JD suggested. Check again the roof vent for cracks in cover and were it meets roof.
John H
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Help - water leaking into Manifold (P4) Bay

Reply #6 –
Thanks John, that photo would be nice. FOT had that frame out when we were there and it was while we were there that we first noticed this problem. I hadn't thought about that frame having been removed.

Dick On Dec 2, 2012 2:31 PM, "John Haygarth" <jhaygarth@aol.com> wrote:
Quote

Dick, another place (although you did say no water was visible in the rear inspection cover for fridge) I found a while back that with heavy rain the bottom of the cover (with vent lines in) have a few slots and water was going in there and migrating past the plastic frame then onto the wood floor under fridge. I fill all across rhe vent opening with silicone untill it was higher than the outside edge so water could not get in. It worked for me. If you need a photo let me know and I will take one. If as Michelle say's it is not the tap (cheap crap) try checking around the top of window seal for any gaps as JD suggested. Check again the roof vent for cracks in cover and were it meets roof. John H

2000 U295 36' Cummins 350 c/w banks Stinger, resonator upgrade, Solar, LED lites. 2001 Tracker

jhaygarth@aol.com
Dick, '03 U320 40' Tag, 2 slides, Coach #6075
Full Timers
2009 Honda CR-V

Re: Help - water leaking into Manifold (P4) Bay

Reply #7 –
Yes, those copper lines are for propane and I believe they are just a path that the water is following. I can see the one from the fridge where it goes through the floor, but it seems dry at that point. But somewhere between where it goes into the floor behind the fridge and reappears in that bay, it is picking up the water.
And I did have some problem getting that valve under the sink (seems to be part of the filter assembly) to shut off. But leaving the filter faucet open it is not dripping into the sink so I think that line is closed now.
I was wondering if water could leak from the roof where the vents contact the roof and come down outside of the flue. The inside of the flue vent is dry.
It has been too wet to do much on the roof for now.
We did discover another leak today under the rear corner of the large window in the living room on the passenger side. Maybe all the same problem although they are a long way apart.
Probably wasn't a good decision to spend holidays in Oregon. :'(
Dick, '03 U320 40' Tag, 2 slides, Coach #6075
Full Timers
2009 Honda CR-V

Re: Help - water leaking into Manifold (P4) Bay

Reply #8 –
I just took these and they give you an idea of what I meant. The little slots allow water in and if the area behind is left as original water can migrate into wooden flooring and cause a problem. I piled silicone along the inside so it is higher than the plastic so no water can get in. (Not very neat I know but no one sees it!!). If you have water leaking also at the bottom of a window trim then it is pretty certain that the top (or sides) have a gap behind flange and sealant is not protecting it.
Another place I have found is the top trim strip with all the screws in and the one along the floor line, if they do not have any (a fine line of it) sealant along the top edge that is another point of entry. The screws back out slightly over time so are not holding the strip tight. I check mine about three times a year and almost allways have to tighten a bunch (all of the strips). The water follows the screws. It takes a bit of sluething but I bet you will find some of these things causing trouble.
John H
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Help - water leaking into Manifold (P4) Bay

Reply #9 –
Quote from: John Haygarth –
I just took these and they give you an idea of what I meant. The little slots allow water in

Another place I have found is the top trim strip with all the screws in and the one along the floor line, if they do not have any (a fine line of it) sealant along the top edge that is another point of entry.

Thanks John!

I've added these to Steve's "list" :) .  And one of the things we had taken care of at Xtreme last month was cracking in the sealant of the "belt moulding" (the one at floor level). 

Michelle
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Help - water leaking into Manifold (P4) Bay

Reply #10 –
The one thing about owning an RV is that you MUST at least once a year go over the  whole exterior checking joints, screws, and flanges around all the appliance exterior parts because you WILL get seperation and then leaks happening. I have totally rebuilt 3 RVs- the last one for my Brother and we took the walls off from the outside in , the floor reframed and all the cabinetry/ appliances etc out, rewired the whole thing. There were multiple points of water entry that we had to get rid of. It was bought that way-dirt cheep- but now after all the work is worth 5x the cost (labour not included as I was teaching him how to do it) and has gone from a mid 90s era to modern day. Leaks are the quickest way to the scrap heap if not checked, and yet it is in my opinion the cheapest and easiest thing to do on an RV.
John H
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Help - water leaking into Manifold (P4) Bay

Reply #11 –
Just to follow up, John you were right on. The water was coming in the access door behind the fridge (see photo). We got it cleaned up and dry and put enough urethane sealant on to stop the leaks. I will seal it better after we leave FOT. They will have to remove that frame to repair, again, some cracks in the fiberglass that extend out from both top corners. I noticed that after that repair last year they replaced the frame, but didn't put the screws in the original holes, nor did they seal the original holes.
It is good for now.
Dick, '03 U320 40' Tag, 2 slides, Coach #6075
Full Timers
2009 Honda CR-V