Anyone know how to find a leak in a car roof?

Question

i drive a '99 Pontiac Sunfire coupe, and ever since I get the car two years ago, I have had a problem with some kind of leak. The only time it really appears is after a long rain, and what I find is a large puddle that covers the entire passenger side rear seat and has soaked all the way through the cushion and has pooled in the metal underneath. I've checked all the seals around my rear window and I can't find anywhere that is leaking. I also checked the trunk, which shares space with the rear seat and it is also watertight. I'm thinking of finally just taking the car into a bodyshop to see if they can find anything, but money is a big issue and i was hoping someone here might have an answer for me.

Answer 1

The water leak guy we used in our shop would always pull back the carpet and remove the front and rear seats...then while lying in the car with a flashlight he would have someone spray or flow water all around the windows, trunk seams, taillights and doors going from bottom to top in progressive steps to watch for where the water intrusion is occuring. Sometimes, you might have to remove interior trim parts as well...the main thing is to see where the trickle of water is coming in and trace it as far as you can. Just keep flowing water over the areas with a hose one section at a time. If the top of the seat is wet, I'd venture a guess that it's dripping down from above that area although sometimes a leak will occur in one area and the water will migrate to another area before dripping due to surface tension. Also, sometimes you can see a white streak where the leak occured due to minerals or acids in the water.
Good luck, Paul

Answer 2

purchase some sparkling silicone RTV sealant on the vehicle parts keep and word an exceedingly skinny layer together with your finger everywhere in the windshield hollow with the metallic body of the vehicle. It it nevertheless leaks then, you'll understand it ought to't be from the seam you utilized the sealant to.