Senior Tech Team
Join Date: Nov 2009
Location: Riverside County, California
Re: My 70's passenger side front carpet is wet when it rains! Why?
Leaks in this area on my 71 Monte have come from 2 places:
1 - the kick panel vent/air door assembly behind the kick panel has a mastic behind it. If this is original and has never been removed, the mastic dries out and separates, allowing water that flows down inside the cowl and around the sides to come in. I sealed mine in with urethane back in '92 and it lasted until this rainy season. Had been leaking for years before that. Do the same for the drivers side.
2 - the seams in the floor where the main firewall metal is mated to the main floor pan had a ribbon of sealer from the factory. It had failed, and would allow water in when I drove through deep puddles. Sealed it with urethane also.
So far, knock on wood, no leaks anywhere areound the main cowl plenum or top of cowl.