In my last F100 video, I covered an assessment of my passenger side floor pan. I was discovering the depth of the rust real-time and was unsure what my approach would be with respect to replacement. I have decided since then that I will be replacing a large portion of the passenger side floor pan. Assessment of the driver’s side is pending, so I may need a patch or two over there as well.

Today it has been raining most of the day. I was checking in on the truck and noticed that there was some dripping water coming inside the cab and running down very close to the heavy pitting shown in that last video.

I wiped up the water and then poured a gallon of water into the cowl through the vents in front of the windshield. Most of the water landed on the driveway as expected. But a minute or so later, water began to drip down in that same area again. And then a few minutes later, it began to drip in a similar spot on the driver’s side.

I recorded a little video to upload to an F100 forum and did some research on the internet. Turns out, in cab drippage is a common problem with Ford trucks.

So, I’m going to clean up the muddy floor pan tomorrow, then start removing in dash components. There is all kinds of stuff up there and I’m not looking forward to this BUT I am glad I discovered this before installing new pans and carpet. Better to repair it now than later.

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