Water Leak In Rear Cargo Area

V
Mazda Protege5
I recently discovered water under the floor of the rear cargo area on my 03 P5. Both the spare tire well and areas behind the rear wheel wells. No rusted out wheel wells. Happens if the car is stationary in the rain. I originally was thought it was the rear quarter windows. But, local glass places want $400 each to replace. Not happening on a 17 year old car. I injected high-flow silicone around the rear windows, but still have a leak somewhere. No wet spots or staining on the headliner. Maybe around the rear tailight bolts or where the hatch struts attach to the body?

Anyone else run into this issue?
 

BenjiHoggi

OEM+
L
Eugene, OR
V
22v Mazda Protege5
I recently discovered water under the floor of the rear cargo area on my 03 P5. Both the spare tire well and areas behind the rear wheel wells. No rusted out wheel wells. Happens if the car is stationary in the rain. I originally was thought it was the rear quarter windows. But, local glass places want $400 each to replace. Not happening on a 17 year old car. I injected high-flow silicone around the rear windows, but still have a leak somewhere. No wet spots or staining on the headliner. Maybe around the rear tailight bolts or where the hatch struts attach to the body?

Anyone else run into this issue?
I was just pulling out the jack and related stuff in that right side compartment in the back of my Protege5 yesterday to get to the taillight bolt and I found that there was like an inch of water in there at the bottom which is kind of gross. First time I noticed it and I'm not terribly bothered, but I live in a very wet climate and I'm concerned about what it might do to my car long-term. Between this and my slightly leaky sunroof, it smells kind of mildewy and gross in there sometimes, which I don't prefer. I'd like to keep my basically completely rust free P5 as clean and dry inside as possible for as long as I can.

I'll also be interested to know if anyone else has had similar problems and if/how they fixed them.

Ben
 
V
2001 Mazda SP20 323
Gidday! Had the same problem on both of my P5's, common leak points are the taillights, the tailgate seal itself, and the body seam running just under the light (that's where mine leaked) aaaand the cabin vents on either side.

Strip the panels out, jump inside with a torch and get a buddy to hose the car down. With a bit of luck you'll see where the water is coming in from. Good luck!
 
I had exactly the same issue a couple of months ago. I thought it might be the quarter windows so I removed the interior panels around the windows and confirmed it with the garden hose. The original seals were just old and dried out. Since I had already removed the interior panels, all the local auto glass place had to do was remove the windows and reseal/reinstall them. Removing/reinstalling the interior myself brought the price way down, so total cost was $120 for both.
 

Hank3

Asian Persuasion <><
Contributor
V
2010 Mazda5 GT
When I had a leak in my P5 a few years ago (spare tire well was collecting water), it was the hatch weatherstripping. I deduced that it just needed some new sealant. Used some 3M Black Super Weatherstrip and Gasket Adhesive and it fixed the problem. That stuff is messy though so use with care :)
 
V
protege5
OR, just use a straight pick, ice pick, punch, or even a philips screwdriver. Pop a couple holes in the bottom of the spare tire well, and each corner for the water to drain out of. Problem solved.

Really no different than the inside of a door frame, water drips down the window, inside the door, and drains out holes in the bottom. If you use a little zinc galvanizer, paint, or whatever you won't have to worry about rust either.
 
V
2014 Mazda3 S GT auto, 2008 MX5 6-speed
Gidday! Had the same problem on both of my P5's, common leak points are the taillights, the tailgate seal itself, and the body seam running just under the light (that's where mine leaked) aaaand the cabin vents on either side.

Strip the panels out, jump inside with a torch and get a buddy to hose the car down. With a bit of luck you'll see where the water is coming in from. Good luck!
Wow, be careful using an oxyacetylene torch near your gas tank! :)
 

pcb

The Diagram Dude
V
2002 mazda protege 5
North American "Boot Torch"...





"Boot Torch" down under... Lol

 
V
2014 Mazda3 S GT auto, 2008 MX5 6-speed
torch
[tôrCH]
NOUN​

  1. historical
    a portable means of illumination such as a piece of wood or cloth soaked in tallow or an oil lamp on a pole, sometimes carried ceremonially.
  2. BRITISH
    a portable battery-operated electric lamp; a flashlight.
VERB
informal

  1. set fire to.
    "the shops had been looted and torched"
    synonyms:
    burn · set fire to · set on fire · set light to · set alight · incinerate · ignite · kindle · put/set a match to · light · start · touch off · reduce to ashes · destroy by fire
 

sm1ke

Work In Progress..
Moderator
Contributor
L
Canada
V
'18 CX-9 Signature
torch
[tôrCH]

NOUN


    • historical
      a portable means of illumination such as a piece of wood or cloth soaked in tallow or an oil lamp on a pole, sometimes carried ceremonially.
    • BRITISH
      a portable battery-operated electric lamp; a flashlight.

VERB

informal


    • set fire to.
      "the shops had been looted and torched"
      synonyms:
      burn · set fire to · set on fire · set light to · set alight · incinerate · ignite · kindle · put/set a match to · light · start · touch off · reduce to ashes · destroy by fire
What is the point of this? You're both talking about the same thing, he's just using different slang.
 

pcb

The Diagram Dude
V
2002 mazda protege 5
I think maybe we were both worried that a North American might try to find a water leak with a blow torch. Lol.
 

pcb

The Diagram Dude
V
2002 mazda protege 5
I did what pb4ugotobed suggested and drilled little holes in the rear corners but under the spare tire, I removed the big grommets and cut a little notch in them then reinstalled them.

I didn't want to drill holes if I didn't have to.


They've been working fine for years but the drivers side rotted out so I just stuffed an oily rag in there to seal it and help stop the rust. Lol

 

pcb

The Diagram Dude
V
2002 mazda protege 5
Yeah, I drilled 1/8" holes in the back corners and there is at least one (maybe two or three? I forget) big two-inch round "plugs/grommets" under the spare tire.

I removed them and made a small cut/notch in its edge then reinstalled it.

If I just put a hole in the plug there would still be more than a 1/8" of water that would sit in there because of the height of the grommet.

My car's red. Maybe they skimped on the red paint under the carpets and the primer is showing through?? I dunno?




I'd dig out the trunk and take a picture but it's cold and snowing right now. Lol
 

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