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87 B250 Floor vents leaking
#777669 June 15th 2021 8:47 am
Joined: Jan 2019
Posts: 38
tvullo Offline OP
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Hey Guys,
Usually I’m able to find an answer for everything on this site, but maybe I’ve got an isolated issue or I’m missing something elementary.
When it rains, water seeps through the seam sealer area by the floor vents above the wheel wells (both sides, but the driver’s side worse). I took off the plastic covers and removed the carpet for now until I can fix this issue but as I’ve chased water leaks since day one with this truck, the carpet may be trashed anyway. But it appears that in the cavity behind the vent water pools up and seeps through the seam and out the screw holes for the vent cover if it’s raining enough. Is there something im missing here?
Ive already cleaned out under the wiper cowling, probed through the hvac vent drain tube; has anyone else dealt with this? I’ll get some better pictures later, but attached is the area where the water pools up in the driver side floor vent going into the fender well.

Attached Files vent.jpgvent 2.jpg
Last edited by tvullo; June 15th 2021 8:48 am.

1987 Dodge B250 Work in progress
Re: 87 B250 Floor vents leaking
tvullo #777706 June 16th 2021 9:29 am
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Posts: 38
tvullo Offline OP
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ok
So the water starts pooling up in these holes behind the floor vent plastic cover.
It appears they are linked to each other and there is a drain below the hinge bolts going to the door jamb. but this is not the lowest point in that area, that seam between the cab is.
Im thinking I can Seam seal the backside and re seam-seal the front a tad and make certain the drain point is the lowest point and drains properly and not on carpet anymore.
I'll throw a few pictures in later of my progress and hopefully success's.

Attached Files vent.jpgvent2.jpg

1987 Dodge B250 Work in progress
Re: 87 B250 Floor vents leaking
tvullo #779015 July 16th 2021 7:30 pm
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i dont have an answer but i am interested in what you find out. have you figured it out?

Re: 87 B250 Floor vents leaking
tvullo #780225 August 07th 2021 9:16 pm
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pooh-bah
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That's a lot more water than I'd expect to just climb around through capillary action. Out of curiosity, have you ever rammed out the two drain holes at the very bottom of the inside rocker panel, and any of the little gaps along where the inner and outer rocker panel pinch seams are? If any of those are clogged with dirt or leaves, you can end up carrying around your very own lake.

What I usually do is run a garden hose down into the wiper valance, leave it run, then take a thin screwdriver and ram up in the drain holes until the water draining out runs clear without any debris left in it. If there are any sizable leaves though, they'll flop right back over the drain holes, so if hooking them, like with a paperclip, doesn't work, I have to take off the wiper valance and run a small shopvac hose down into the cavity to suck out whats too big to exit the drain holes.

The very first time I did this, I extracted nearly a half gallon of debris from inside the rocker panels!


-It's been such a LONG TIME... BlueShift>> 1981 Dodge Ram B250 Custom Sportsman Maxi Van


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