WolverineCub Posted August 17, 2018 Share Posted August 17, 2018 I had the windshield replaced with the black rubber/plastic molding. The hood has a new seal in the rear. Water is getting in on the drivers side firewall. Nothing obvious. Since I see the floors are rotting out on these, there must be some areas unique to these trucks. Any Help, got black poly urethane and starting this fix. Link to comment Share on other sites More sharing options...
87MJTIM Posted August 17, 2018 Share Posted August 17, 2018 watching Link to comment Share on other sites More sharing options...
Eagle Posted August 17, 2018 Share Posted August 17, 2018 Somebody -- might have been Pete himself -- had a thread about this awhile ago, describing using white powder to trace the path of the leak. IIRC the source turned out to be the main electrical connector where it comes through the firewall. Link to comment Share on other sites More sharing options...
87Chief Posted August 17, 2018 Share Posted August 17, 2018 Yes, either the fuse box connector or the clutch master cylinder (not sure if you have an auto or not). Link to comment Share on other sites More sharing options...
WolverineCub Posted August 17, 2018 Author Share Posted August 17, 2018 Yes for the Master Cylinder. Fuse box eh, Ok. Thanks TBC Link to comment Share on other sites More sharing options...
Pete M Posted August 18, 2018 Share Posted August 18, 2018 I've used baby powder to find a couple sneaky leaks. sprinkle it around and the water will make tracks through it, leading you back in the direction of the source. one turned out to be a leaky windshield that was running down inside the a-pillar and dripping on to the floor way down near the floor. the other was a leak in the engine bay that was following a wire down through a hole. anything that could possibly leak has leaked for someone over the years. there must be 50 ways for water to get in. Link to comment Share on other sites More sharing options...
WolverineCub Posted August 23, 2018 Author Share Posted August 23, 2018 OK, so I removed the Master Cylinder. No seal, so I will make a rubber one. For the fuse box, I removed the two screws inside. There is some silicone someone put on the firewall, the original seal inside is torn. I think this fuse box is filled with that black tar? like the other plug sitting on a firewall bracket. I cleaned that out and put dielectric grease but I don't want to pull the fuse box apart. Has anyone done that? Link to comment Share on other sites More sharing options...
WolverineCub Posted September 15, 2018 Author Share Posted September 15, 2018 Finally used black urethane on both sides of the Master cyl. and around the fusebox. NO MORE LEAK. Link to comment Share on other sites More sharing options...
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