Car Body Leak Repair
Intro: Car Body Leak Repair
December might not be the best time of the year to discover that there is water inside your car, especially when you live upstate New York... and your car is staying on an open air parking lot!
I waited for a snowless day, with temperature above freezing to venture taking a look at the problem. Water was accumulating under the front passenger seat, under the rug, threatening to turn the car into a mobile swamp. To find a leak, your only option is to spray every corner of the car with water and patiently observe and listen where the dripping comes from. It turned out that the water was coming from the trunk.
Under the rug in the trunk, both the spare wheel and the jack compartments were completely underwater. Driving the car was enough to jiggle the water under the back seat. Water would accumulate under the passerger front seat, due to gravity.
I waited for a snowless day, with temperature above freezing to venture taking a look at the problem. Water was accumulating under the front passenger seat, under the rug, threatening to turn the car into a mobile swamp. To find a leak, your only option is to spray every corner of the car with water and patiently observe and listen where the dripping comes from. It turned out that the water was coming from the trunk.
Under the rug in the trunk, both the spare wheel and the jack compartments were completely underwater. Driving the car was enough to jiggle the water under the back seat. Water would accumulate under the passerger front seat, due to gravity.
STEP 1: Drying and Testing
Since the water, was entirely on the passenger side, the leak had to be on that side too. I started by drying all the water inside the trunks. I had to take the rugs, the spare wheel and the jack out of the car. I needed something to scoop the the water out and had an empty bottle of shampoo with the top cut, slim enough to get the water stuck inside narrow compartments. I got as much water as I could like that and finished drying things with an old bath towel. Once everything is dry, it's much easier to see where water comes from!
The procedure is to spray the, beforehand closed (!!), trunk with the water from the pitcher. Get someone in the car, the back seat pulled down, with a flashlight to listen and watch where the water comes from (I managed to both spraying and spying). The picture shows what I saw: the water was coming from the backlight!
The procedure is to spray the, beforehand closed (!!), trunk with the water from the pitcher. Get someone in the car, the back seat pulled down, with a flashlight to listen and watch where the water comes from (I managed to both spraying and spying). The picture shows what I saw: the water was coming from the backlight!
STEP 2: The Demon of Duct Tape
On my car, it's fairly easy to take the back light out (3 nuts to unscrew) and a nice and easy pull got it out. You ought to know how to do that if you ever want to change a broken lightbulb! The light taken out, it was easy to see where the problem was. Now, how to seal the leak?
The first thing that came to my mind was, of course, to use duct tape. It sort of worked, but not so well... Indeed, it is difficult to make a perfect seal with duct tape on a surface with acute angles, so I went for something a little more sophisticated: tub and tile adhesive caulk! I found that stuff (that looks like a big toothpaste tube) at my local hardware store for less than 5 bucks. I rubbed the opening with the the caulk and smoothed it with a popsicle stick.
You're supposed to let the caulk dry from a couple of hours to a day (depending on what you bought). Because my car is parked on an open air parking lot, I couldn't leave things like that. I therefore reassembled the backlight, and to insure that things would stay dry, I duct taped it to prevent the water from getting onto the caulk.
The first thing that came to my mind was, of course, to use duct tape. It sort of worked, but not so well... Indeed, it is difficult to make a perfect seal with duct tape on a surface with acute angles, so I went for something a little more sophisticated: tub and tile adhesive caulk! I found that stuff (that looks like a big toothpaste tube) at my local hardware store for less than 5 bucks. I rubbed the opening with the the caulk and smoothed it with a popsicle stick.
You're supposed to let the caulk dry from a couple of hours to a day (depending on what you bought). Because my car is parked on an open air parking lot, I couldn't leave things like that. I therefore reassembled the backlight, and to insure that things would stay dry, I duct taped it to prevent the water from getting onto the caulk.
STEP 3: It's All Good
Luckily for me, that night it didn't rain. Before putting the car to the test, I had to see if the caulk had dried the way it should (despite the somewhat low temperature). It looked pretty good to me (c.f. picture) and ready to take a shot. I therefore repeated the spraying and spying procedure, this time with abundant quantities of water. It's been a couple weeks already, with rain and snow: I'm happy to say the repair is a success!
Stay dry,
Le Gazier.
Stay dry,
Le Gazier.
18 Comments
AsheeqahA 8 years ago
HI, I need urgent help.
It has been raining like crazy by us, and when I got in my car this morning, I discovered a huge puddle at the back seat. The water went up till the drivers seat. I am unsure how to fix this problem, and it will be raining hole week here. I can not deal with a wet floor and the damp smell it will give off.
Please let me know what is the best solution before I spend R1000s to fix the problem.
legazier 8 years ago
Sounds like you want to get your car under a roof, get as much water as you can out of it and then let it dry some more.
ElizabethE24 8 years ago
legazier 8 years ago
I do hope you'll soon hear back from your mechanic. Two weeks do sound like they must be super busy.
LisaB187 8 years ago
97 Toyota Camry has same problem. Possibly related to the dashboard "headlight" warning light remaining on? All lights work, thought it was a bad sensor. Now I think it's due to the loose molded plastic cover plates for the tail lights in the trunk...?
LeonS21 8 years ago
I can't believe it!!!!! You've done it..... Found my leak that is:) this has been haunting me for so long. I didn't know where to start and after months of research i still didn't know where to start. WOW!!! I've still got my MAZDA 323 and those pics are identical to mines. The water is literally travelling all the way to my rear right passenger footwell. Dude i can't thank you enough for the write up and those incredible pics... Thanks a million Dude you just saved my trusted buggy.I was so frustrated i was just about to sell O.M.G. Thank you so much...
legazier 8 years ago
Well, thanks for this amazingly positive feedback. I posted this eight years ago, and haven't thought much about it, but right now, I just feel like a million bucks ;-) May you keep your 'trusted buggy' many more years!
1997 pontiac grand am 11 years ago
WHEN IT RAINS MY DRIVERS SIDE FRONT & BACK FLOOR BOARD IS SOAKEN WET AS IT HAS AN AWEFUL LEAK "some where" & I HAVE CHRONIC ILLNESSES & AM NOT SUPOSE TO BE AROUND THE MELDEW, I'VE LEFT MY WINDOWS CRACKED TO HELP SOME, BUT LEARNED THAT ABIT TO LATE, GRRRR AT ME.... I'M ON LOW INCOME & I'M ON A FIXED INCOME & SO TrYiNg TO FIGURE OUT AWAY TO MAKE ALL FALL INTO PLACE IS IMPOSSIBLE & IS SO DEEPLY NEEDED... CAN YOU "PLEASE" HELP GUIDE ME WITH ANY SUGGESTIONS/HELP PLEASE? APPRECIATE YOUR TIME & UNDERSTANDING... ANYONE ELSE HAVE A GRAND AM"BRIGHTEST BLESSINGS ALWAYS"...
91Cavalier 12 years ago
mole1 13 years ago
I used a shop vac to get water out of the trunk of our '90 Camry today. I have no idea where the water is coming from, but if it isn't freezing or raining tomorrow, I hope to try your method. (Aren't those wells supposed to drain somehow?)
[Just in case anyone else has a similar problem... we had enough water to float a piece of 2x4 on the driver's side of an '85 Tercel for years. I used the bathtub stuff everywhere I could think of. It turned out that the flimsy sheet of plastic (lack thereof) inside the front door was the problem. It didn't look important, and it got torn up when fixing the window after a break in. ]
cmorgan45 14 years ago
legazier 14 years ago
Cheers!
cmorgan45 14 years ago
Solderguy 15 years ago
hondagofast 16 years ago
GorillazMiko 16 years ago
natnie 16 years ago
Patrik 16 years ago