Water Leaks!

[itsky]

Hi everyone.  I just purchased an '87 Comanche here today from one of the forum members.  On the way home, I drove through plenty of rain.  When I got home, I realized that I seem to have leaks in multiple places in the cab:

- The headliner in the rear is wet all across the back edge

- The headliner in the front is wet all across the front end it appears. 

- Below the sliding glass window all across.

 

Of course the carpet is wet from all of this.  I was reading on another thread about how an auto glass place might be able to re-seal the bond on the window in the back.  Since I am having a leak in the front it appears, maybe I should get the front glass resealed?  There is also a bed light on the back.  I assume that this could possibly leak as well?  

 

Any suggestions would be greatly appreciated! 

[Pete M]

I'd much rather get brand new front glass installed than resealing 35 year old glass.   probably not much more money either. 

[CO MJ]

18 hours ago, itsky said:

Hi everyone.  I just purchased an '87 Comanche here today from one of the forum members.  On the way home, I drove through plenty of rain.  When I got home, I realized that I seem to have leaks in multiple places in the cab:

- The headliner in the rear is wet all across the back edge

- The headliner in the front is wet all across the front end it appears. 

- Below the sliding glass window all across.

 

Of course the carpet is wet from all of this.  I was reading on another thread about how an auto glass place might be able to re-seal the bond on the window in the back.  Since I am having a leak in the front it appears, maybe I should get the front glass resealed?  There is also a bed light on the back.  I assume that this could possibly leak as well?  

 

Any suggestions would be greatly appreciated! 

 

The bed light can definitely leak. The pinch welds above the doors and the one along the back lower side of the cab can leak as well. For the water below the back window, I'd check to see if it's the little rubber bit on the center of the slider outside the cab that's leaking, they get dryrotted and stop sealing over time.

 

I recently pulled my rear window and cleaned up my front windshield. I'd pull the trim on your front and see if there's any rust, mine was pretty bad and I would have it pulled and cleaned up before resealing. The rear is a bit tricker since the trim is not going back on if you pull it. If you pull the plastics from the inside, dust some cornstarch or similar along the bottom edge, then make it rain you can trace where the water is actually coming from. Window urethane is $20 at any auto parts place

[itsky]

Thanks for the tips CO MJ. 

[Pete M]

there was no visible rust on the truck I'm rebuilding until we pulled the glass.  then we found surface rust on both the front and back window urethane locations.  if you find this, it must be dealt with properly to have any hope of resealing the new urethane.   

[itsky]

I'm in the process of trying to find an auto glass shop that will do that for me.  Hopefully I will be lucky. :)

[ghetdjc320]

I haven’t seen the actual urethane seal surface leak, but practically every seam on MJ’s is a leak spot with horrendously poor application of sub standard seam sealer. The harder you look the more issues you’ll find. If the glass shop removes the glass, take a look for yourself at all the body seams in and around those frames. The glass shops I’ve dealt with only concerned themselves with the pinch seam where the glass adheres for the most part.