White powdery substance/puddle...what is it?

Yellow01GT

Founding Member
Dec 14, 2001
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Jefferson City, MO
PLEASE READ ENTIRE POST BEFORE REPLYING

Here's the situation: This isn't a mustang, but I figured it shouldn't really matter in this case. My friend has had his 2000 Camaro SS in storage for roughly 6 months. We went out to his mom's house yesterday to change the oil and get it ready to come out next week and found a 'puddle' underneath the engine on the passenger side. It wasn't really a puddle though, it was a dried up white powder, but it left sort of a brownish stain on the concrete under the powder. The puddle is in a sort of oval shape, 2'x1.5'. We came up with a couple possible answers but haven't figured it out yet.

1.) Refrigerant Leak
We checked the A/C and let it run for about 10 minutes. Ice cold. We hooked up a tester to the A/C bottle and it read ~30 PSI, so it doesn't look like it leaked out any refrigerant. If there was a leak, could it just have been a little bit? Or would have emptied the whole A/C system? I mean there's definately a lot of pressure in the system for it to be a leak. Also, my friend didn't really start it up during the 6 months. Maybe once or twice, but he never ran the A/C during those times.

2.) Battery Leak
He also had a the battery hooked up to a charger for quite a bit of time and thought that he may have over-charged the battery. He never disconnected it from the car during the 6 months. We disconnected the positive cable from the battery and it was corroded and was covered in white powder and had white powder inside the terminal. BUT, there was no trail of battery acid down the battery to the ground. Would the battery leak so much as to leave a puddle anyways? Also, we took the battery to Autozone and it came up as a bad battery, so we picked up a new one last night.

3.) A leak from somewhere else...but where?

Another thing: there were no leak trails at all. We found a little bit of the powder on a hose at the bottom most part of the car. I believe the hose was for the A/C, but that's it. No trail at all.

Well, thanks for reading this. Hopefully someone can help us figure out where this came from.
 
I would say its road salt. Sometimes i notice that when I park my car in the garage when its wet/snowy. Once it dries out, when the water evaportaes it leaves behind the road salt residue. Even if the car was not driven in the snow, there could have been residue on the car or it could have been on the garage floor. My other guess is that it could from hard water deposits from when the last time the car was washed.
 
2k2fourpointsix said:
I would say its road salt. Sometimes i notice that when I park my car in the garage when its wet/snowy. Once it dries out, when the water evaportaes it leaves behind the road salt residue. Even if the car was not driven in the snow, there could have been residue on the car or it could have been on the garage floor. My other guess is that it could from hard water deposits from when the last time the car was washed.

No...
 
2k2fourpointsix said:
What makes you think it came from the car, and not something that was on the floor

There was no puddle there before and we found a little bit of the white powder on a hose underneath the car. I know it wasn't road salt because the car has never been driven in the rain or snow and got put away before the first snow...so no salt. Sorry for just saying "No" in my previous post.

I think we're concluding that it was the battery. It looked like the substance kind of ate away at the concrete (battery acid), and we found the powder all down the positive cable coming from the battery. Since we've already got a new battery in the car...problem fixed!
 
I think we're concluding that it was the battery. It looked like the substance kind of ate away at the concrete (battery acid), and we found the powder all down the positive cable coming from the battery. Since we've already got a new battery in the car...problem fixed![/QUOTE]

Sounds like you figured out the problem.
 
Yellow01GT said:
I think I'm going to have to say no to that one. :notnice:

You can say no to a double dog dare, but not to a triple dog dare.

Sorry you got to do it!!!

If it tastes like salt, your ok. If your tongue starts to bleed, its battery acid. If you pawn your car to get more of it , then its crack.