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Discussion Starter #1
Ref: "A Pillar- B Pillar Found", also, "Any body Men out there to track a leak?"

4.5 inches of snow in April in New England, day before last. My entire headliner and rear seat assembly, bulkhead insulation, all rear interior trim are out, subwoofer, everything. The water is leaking from both corners of the outer rear cab bulkhead. Weirdly, there is foam rubber stuffed in the lower corners, both sides of the double walled structure. On the left, the cable for the fuel door is going thru a slash in the foam to perhaps keep it from rattling. On the right side no cable, just the foam stuffed there. Both of these were wet when I yanked them out 2 days ago. In the middle it's dry, and no sign of leakage, it looks like new. Also, no foam there??

By noon yesterday the April sun had melted and dried all the snow from the storm over night. All except the snow in the bed, which was facing north and shaded from the sun. So, no source of water from anywhere but the bed. Sure enough, the water was oozing in from the rear bulkhead wall, both corners. IT HAS TO BE FROM THE BED!

OK, how do I get there? I'll try the wheel wells this weekend. I know already that the lower bed is impossible to get out unless you had 4 guys or an engine hoist, etc. I tried doing that before- very heavy and binding- especially at the storage trough.

The bed is about 20" below the lower edge of the rear window, which if you go inside the cab the rear cab wall goes down about 28." Those corners with the foam rubber are the low point.

I really wonder if Honda put the foam in there to absorb incidental water from the bed. Why else wouldn't they put foam in the middle of the bed? The low point gets the water- so just put "sponges" at the low corners. I really don't think this is a sound insulation thing, as there are all kinds of layers of that in that area, plastic/fiberglass insulation wall, subwoofer case- (pretty impressive!), heavy and thickly upholstered seats with all kinds of foam, cloth, and thick leather and vinyl.

I will fix this sucker!!

Help body guys!! Help!
 

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Ref: "A Pillar- B Pillar Found", also, "Any body Men out there to track a leak?"

4.5 inches of snow in April in New England, day before last. My entire headliner and rear seat assembly, bulkhead insulation, all rear interior trim are out, subwoofer, everything. The water is leaking from both corners of the outer rear cab bulkhead. Weirdly, there is foam rubber stuffed in the lower corners, both sides of the double walled structure. On the left, the cable for the fuel door is going thru a slash in the foam to perhaps keep it from rattling. On the right side no cable, just the foam stuffed there. Both of these were wet when I yanked them out 2 days ago. In the middle it's dry, and no sign of leakage, it looks like new. Also, no foam there??

By noon yesterday the April sun had melted and dried all the snow from the storm over night. All except the snow in the bed, which was facing north and shaded from the sun. So, no source of water from anywhere but the bed. Sure enough, the water was oozing in from the rear bulkhead wall, both corners. IT HAS TO BE FROM THE BED!

OK, how do I get there? I'll try the wheel wells this weekend. I know already that the lower bed is impossible to get out unless you had 4 guys or an engine hoist, etc. I tried doing that before- very heavy and binding- especially at the storage trough.

The bed is about 20" below the lower edge of the rear window, which if you go inside the cab the rear cab wall goes down about 28." Those corners with the foam rubber are the low point.

I really wonder if Honda put the foam in there to absorb incidental water from the bed. Why else wouldn't they put foam in the middle of the bed? The low point gets the water- so just put "sponges" at the low corners. I really don't think this is a sound insulation thing, as there are all kinds of layers of that in that area, plastic/fiberglass insulation wall, subwoofer case- (pretty impressive!), heavy and thickly upholstered seats with all kinds of foam, cloth, and thick leather and vinyl.

I will fix this sucker!!

Help body guys!! Help!
The foam you are describing is likely there for noise abatement in a cavity where Honda does NOT expect water entry. Foam, whether closed or open cell will retain water and cause rust over time - an issue which OEM pay close attention to.

IF you suspect water collecting in the bed is finding its way into the interior cab, I would suggest the route it is taking is unexpected from a design perspective. Its a total guess on my part but... the weep holes under the cab/bed wall might be plugged with debris, causing water to find its way to an "un-managed" exit point. There are 8 weep holes at the low point of the forward bed bottom, where an upward lip is molded to keep water from overflowing. See image below.

BedEmpty.jpg

It would be very easy to inspect those weep holes. If blocked, clear them and test results.

Even if they are blocked, your issue suggests a seal or panel joint is coming undone. The entire cab/frame/bed interface *should be* as close to water proof as could be mass produced, so its likely the concentration of water in your environment is showing you a defect somewhere down under.

Assuming you've already inspected all passages to the interior, such as grommets and body plugs, to may have panel leaks - why that might be could be corrosion, an initial OEM defect in assembly or the result of some sort of traffic incident in the RL's history?

Bed corner.jpg

Keep us posted and best of luck!
 

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2014 Sport
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Sounds like it is your bed to cab area. Still just to be sure . . .
I assume you are aware of the somewhat common leak point(s) around the body colored plastic panel at the rear of the roof? I don't know much about these leak points other than that it is an issue that comes up every once an a while. Is there any way that the water could be trickling down?

Good luck . . .
 

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Discussion Starter #4
I've done the roof pieces, the rear and the roof rack channels, and then siliconed the hell out of them. I just recalled the I didn't have any leak issues when the factory one hinge hard cover was on, and the timing was right on this theory. This also backs up the leak being a bed to cab thing. The thing that settles it for me in the leak leaking when there was melting snow in the bed, and no source of moisture anywhere else.
I'll pull the LR wheel housing first, take a look and hope I see something suspicious. That likely won't be it, but hey I think I deserve a break on this caper by now!

I likely will need my son's help with the bed floor- because it's very heavy, and fussy to get out.

The pics are helpful Oh- six. It shows the relationship of the bed floor to those air vents, so I know inside the cab where the bed floor height is. I bet the seam sealer right under the bed bottom in the last pic you posted is where my problem is on my Oh-7.

Best,
Bluemill
 

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2104 Honda Ridgeline SE
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After seeing how the seam sealer failed in my RL I wouldn't trust any of it. I would even be suspicious of one spot in OhSixes pic. See the black shadow behind the seal in the corner. That's how mine looked, which BTW I overlooked.
 

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I've done the roof pieces, the rear and the roof rack channels, and then siliconed the hell out of them. I just recalled the I didn't have any leak issues when the factory one hinge hard cover was on, and the timing was right on this theory. This also backs up the leak being a bed to cab thing. The thing that settles it for me in the leak leaking when there was melting snow in the bed, and no source of moisture anywhere else.
I'll pull the LR wheel housing first, take a look and hope I see something suspicious. That likely won't be it, but hey I think I deserve a break on this caper by now!

I likely will need my son's help with the bed floor- because it's very heavy, and fussy to get out.

The pics are helpful Oh- six. It shows the relationship of the bed floor to those air vents, so I know inside the cab where the bed floor height is. I bet the seam sealer right under the bed bottom in the last pic you posted is where my problem is on my Oh-7.

Best,
Bluemill
I'm very curious about what might be at the root of your issue. There's a lotta real estate below the bed level inside the cab. Something around 8". The only point of reference I have is a standard body-on-frame truck, it'll will be fascinating to see what the naked butt of an RL looks like.

BedWall_InOut.jpg

I'm headed in the direction you are talking about (removing bed floor) for an entirely different reason. Would you do me a huge favor? Get a few photos of your RL with the bed floor out? Interested in the entire area back there, cab wall to tail gate. It would be tremendously helpful growing a few dream seeds. I sure would appreciate it.

Thanks and best of luck. Looking forward to your results!
 

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After seeing how the seam sealer failed in my RL I wouldn't trust any of it. I would even be suspicious of one spot in OhSixes pic. See the black shadow behind the seal in the corner. That's how mine looked, which BTW I overlooked.
AH CRAP! Pointing that out just cost me a night sleep.

Thanks a lot pal. :)
 

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2104 Honda Ridgeline SE
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Anything to help... :grin:
 

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2006 Ridgeline RTS in Steel Blue
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BlueMill, I was looking for something in the FSM 06-08 and I spotted this section and I thought it may be helpful for reference, if you do attempt to remove the bed. Specifically there are some bolts under the muffler. Good Luck and keep us posted...
 

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Discussion Starter #10
Carsmak, Thanks for your post! Now I know I'm not a wuss because I was unable to lift that lower bed out. I don't have a hoist of that nature so I'll have to do a work around.

The good news is that I've found the leak entry point just today, during a rain storm. In the very well posted photos above by Oh six, the picture of the rear cab wall, inside and outside, focus on the inside view. On the left of the side, there is seam sealer that goes PARTIALLY around the oblong rectangle piece of sheet metal. While looking at that panel from inside the cab, the water is dripping in from end of the seam sealer to the right of the air vent, left side of the cab, behind the driver. I would guess its entering from the window, and collecting in the sheet metal cavity beneath the rear window, which runs the whole width of the panel. I should be more specific, I know where it's dripping in the inside, but still don't know the exterior entry point is.

I'm taking inside the garage this pm and slapping more silicone sealer on. I'm taking off that top plastic piece again to see if there is any pooling inside there, and re-sealing all that. Obviously, I will plug that interior entry point, but I know that's just a band aide fix.
 

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Discussion Starter #11
Re: Closer to the G-D leak!! Chapter 26

Big .5 to a full inch of rain heading our way tonight and tomorrow.

Last Saturday I hit all the seams again with another tube of silicone sealer, then totally sealed the bottom edge of the sliding window, and the side panes. Last, I sprayed the Rustoleum water sealer all over that rear panel, in all the seams cracks, and crevices, both sides. I did witness the actual interior water entry point, leaking with a about a drip every 30 seconds, at the bottom edge of the seam sealer, left side, rear cab sheet metal, where it abruptly stops, to the right of the air vent. That sucker is plugged up with about a 1/4 tube of GE sealer now.

Please OH please don't f'n leak again!!!

Best,
Bluemill
 

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2008 Ridgeline RTS in Billet Silver Metallic
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Maybe you should be using that FlexSeal and seal the heck outta your RL!



j/k.

I've had a leak that only rarely shows up. I kinda wish it had been bad enough to chase down while under warranty. But I only see it in the heaviest of rains and get a tablespoon or two on the left front passenger floor mat. It seems to drip down over the HVAC blower behind the glove box. Maybe if I ever have to replace the windshield, I'll find an issue with the seal between the w/s and the body. But I had a shop look at it with no luck.

I really wish I'd thought if it when I had the accident a year ago and had to replace the RF fender. That would likely have been the ideal time to look at the seam sealer in that area.
 
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