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MJ taking on water


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hello to all the Camanche owners, I am new to this form and am need in some help. about two weeks a go I noticed that the carpet in my 1992 MJ was wet. So i took apart the inside, hung up the carpet to dry and installed the bench seat so i could drive it. Next i poured water all over the truck. I found that the back window was the problem. That week i had our glass guy in the body shop R and I the window. I let the truck stay inside the shop for two days so the glue had ample time to dry. Yesterday I did another water leak cheak, and it is still leaking. now inside the cab on the lower left hand corner of the window that is were its leaking. Would the weather strip around the window cause this leak? mine seems a little bit loose. when i have a chance i will post a few pics of my 1992 MJ. she looks brand new.

 

thanks for helping out! :USAflag:

 

Jason Miles

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well it could be that weather stripping. probably though, there is a pin-hole down on the bottom corner of the windowframe. can you see exactly where the water is leaking out of? or is it behind the interior trim...if so then remove the trim and do your water test again.

 

whatever you do, don't try and pull that weatherstripping out...it's NOT a seal or gasket, it actually just helps make the rear window look better, but most importantly it centers the window. it's shaped so the window fits into it and then you glue the truck frame and set the window back in. if you take it off, you won't get it back on without removing the rear window....again.

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The interior of the MJ is stripped except for the dash, bench seat and one seat belt. I can see were the water is coming in and it is from the bottom corner of the window. now this pin whole, is that normal? did the comanche come from the factory like that? so it sound like i would have to take out the seal to repair the leak, is that corect? I'll check it out tomarrow. would you recommend filling the whole with seam sealer?

 

Thanks,

 

Jason Miles :USAflag:

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The interior of the MJ is stripped except for the dash, bench seat and one seat belt. I can see were the water is coming in and it is from the bottom corner of the window. now this pin whole, is that normal? did the comanche come from the factory like that? so it sound like i would have to take out the seal to repair the leak, is that corect? I'll check it out tomarrow. would you recommend filling the whole with seam sealer?

 

Thanks,

 

Jason Miles :USAflag:

 

well i've never had problems with MJ's leaking from the rear window, but i have had my fair share of windows out. the cab rear window frame (to which the rear window frame mounts) has a recess so that the window will be..well, recessed. just about 1". now the way I understand it is thatif water were to get behind the "weather stripping" (window gasket) for the window, it could sit on the bottom of that recessed sill and cause the metal to oxydize (rust).

 

I'm not sure how common the pinholes (caused by rust not from factory) would be, but I'd assume that it HAS happened. now, do you have a split rear window or a 1 piece? i ask because it could be leaking from the frame for the split rear, or the window frame that the whole thing sits into.

 

either way I would not fret too much over it unless you are EXTREMELY worried about it rusting...simple check is to look at where it's leaking and see if it looks rusty. if not, just caulk it. that's the best fix..i wouldn't spend too much time on it.

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I had a leak in one of my MJs back there and I just kept throwing black household exterior grade silicone at it 'til it stopped. The black stuff doesn't stink like some of the clear versions.

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I finally had a chance to look at the truck today after work. I sealed around the window frame. I did find a small pin hole along a seam on the outside of the cab. dirctley below the window. so i also sealed that. I'll water test it tomarrow.

 

Thanks.

 

Jason Miles :USAflag:

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Because of the water leak, it cause the passenger floor pan to have slight surface rust. Today I killed the rusted, and primed the entire floor pan. Most of it was damage by little rust spots. Hopfully tomarrow I can paint the floor pan Colorado Red. Ontop of that I am going to use 3M rubberized undercoating spray on the entire floor of the truck, to lock out any moisture. jamminz.gif it is designed for frame rails, floor pans and the under carage. Then I'll put in the carpet, bench seat, and trim peices. I'll be surprised if it ever rusts on me again.

 

Jason :USAflag:

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sounds all tinny then. i rhino lined my floor then layed some new tarp in, cut the holes i needed but caulked it around the seat bolts so water wouldn't get in, then laid the floor and insulation in it and viola! now it works, i pulled it up and 6 months later, no rust!...except for one spot that i didn't catch. that rusted from the outside in :(

 

I HATE RUST!!!!!!!!

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floor pan rust. the job was easy compared to finding the leak. hood release cable coming through the firewall. butt, the big leak was in around and through the fuse panel. finally got it-i hope! old owner of truck left outside for 9 mo's, carpet , headliner baad. installing the head liner today, will post pic interior later today. bought alum 5/16 noise, heat shielding, and new carpeting. installed. much less noisy. installed the 5/16 everywhere but doors.http://http://

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