I have a passenger vent window that has a stubborn leak. I replaced the rubber several years back and still has an annoying leak that appears to come through right around the pivot point. Any suggestions other than trying another seal?

 

A new seal is probably your best bet unfortunately.

 

Maybe it doesn't have enough clamping force?

 

I recently ... like in the last 15 months ... installed all new seals / rubbers. I only used the brand that I used (Well, "Precision" was the actual brand. Most likely obtained from Auto Krafters), so there was no comparison testing. The cab is so well sealed that the doors shut hugely better if a window is down. If windows are up all the way, one must apply continual closing force all the way to full shut, firmly. Wind noise at 55-60 was driving us crazy. Finaly narrowed it to the trailing edge of the vent wing where it abuts the rubber seal, the same edge where the latch is found. I tried shimming the latch, no good, just more stress on the glass.

First success was after I added three or four layers electrical tape to the rear edge of the glass. It was just a test. I recalled some thin black rubber with adhesive on one side that I had, maybe 1/16" thick x 1/8" wide. I have no recollection what it came with. I cut strips to fit inside the new rubber seal edge where the vent glass abuts when shut, and removed the tape. Only the one side, the side where the latch is.

I have no wind noise there now, and the added rubber is trapped between the glass and the seal surface, they are adhered well to the inside of those rubber seal lips. Just recently, 7 miles of Interstate at 70-ish mph headed to the dentist, I was surprised at how quiet it was even then.



Initially, I considered sealing them shut, but there are times I like to open them on a really hot day. Mostly, they stay shut. The front edge isn't an issue I guess because the rubber is outside of the glass behind it ... as air flows around off the windshield and pillar..

 

Thanks, I’ll try some of the tips. I already have the dime truck behind the latch but I’m guessing I am going to have to try another seal.

 

Might find a thin close cell foam with sticky back. Or several layers of tape and a razor trim.

 

Way back I had a chevy that the wing window whistled. I cleaned the seal and put a good bead of black silicone on it. I also had put a thin film of Vaseline on the wing glass and closed it into the silicone. After it set up, I trimmed the access silicone off. It worked great.

 

Very creative 👍🏻

 

I've tried using a disco smoke generator and a leaf blower in through the slider window to find leaks. Never could get enough smoke. Anyopne know of one that would work?

 

After a bit more testing and troubleshooting I discovered the seal, especially at the bottom wasn’t making contact with the glass. Additionally the sealant where the glass sits in the channel frame had deteriorated. My solution was a small piece of foam weather stripping and some black sealant for the channel. I think it is all buttoned up now.