Desperately need to find leak

01YukonSC · Feb 21, 2020

Found the problem (see pic).

Fairly obvious right under the cowl. Tested with a hose on the windshield and the water catches the back part of the crack. Sealed up with some flex seal tape for now. Will probably have my brother weld it back if possible, though he doesn't work with autos. Should be straightforward to weld?

01YukonSC · Feb 21, 2020

PNW VietVet said:
You betcha, Wade!

Nick, the water at the rear is for the rear a/c. Assuming of course you have rear a/c. If you also see a water puddle below the tailpipe dripping down to the ground, that is also normal. A byproduct of the combustion process.

Right. I know the back is from the rear A/C. It's always seemed to be more than I would expect though. But the few mechanics I've seen has said it is normal. A year or two ago, though, I didn't realize the rear A/C was there but found out after getting up underneath. Pleasant surprise as I thought something else was wrong. Have dealt with a leaking rear differential so that much fluid was much better to come from the A/C lol.

01YukonSC · Feb 21, 2020

Better pic for those for future reference if someone else runs in to this.

OR VietVet · Feb 21, 2020

01YukonSC said:
Found the problem (see pic).

Fairly obvious right under the cowl. Tested with a hose on the windshield and the water catches the back part of the crack. Sealed up with some flex seal tape for now. Will probably have my brother weld it back if possible, though he doesn't work with autos. Should be straightforward to weld?

View attachment 241047

I would have had no idea to look under that cowling unless other members had not suggested it here. Even being old as I am, I learn all the time here.

HiHoeSilver · Feb 21, 2020

01YukonSC said:
Found the problem (see pic).

Fairly obvious right under the cowl. Tested with a hose on the windshield and the water catches the back part of the crack. Sealed up with some flex seal tape for now. Will probably have my brother weld it back if possible, though he doesn't work with autos. Should be straightforward to weld?

View attachment 241047

If it's too tricky to weld, and you can't see it anyways, I'd bet a good cleaning and a nice bead of silicone would do the trick.

OR VietVet · Feb 21, 2020

The repairs I have seen in the you tube videos involved the sealant, no welding that I saw.

01YukonSC · Feb 22, 2020

Hasn't this bought about silicone. Haven't used it before but will look into it. I'm sure that'd be far easier than welding. Will probably let the flex seal tape go for a while and recheck at the next oil change (just did it last weekend) to see how it's holding up.

Now to take apart the dash and clean out the vents to try to get rid of the moldy smell.

Thanks for the help everyone.

wjburken · Feb 22, 2020

01YukonSC said:
Hasn't this bought about silicone. Haven't used it before but will look into it. I'm sure that'd be far easier than welding. Will probably let the flex seal tape go for a while and recheck at the next oil change (just did it last weekend) to see how it's holding up.

Now to take apart the dash and clean out the vents to try to get rid of the moldy smell.

Thanks for the help everyone.

A lot of options for the silicone sealant. Here is one from AutoZone.
https://m.autozone.com/sealants-glu...w6-ivrb8ATpsaWiYxEQaAh0mEALw_wcB&gclsrc=aw.ds

drakon543 · Feb 22, 2020

they actually sell a special seam sealer at auto parts stores for that. 2000 model civics were terrible in the trunk for body panel seams leaking. as i have a 2000 civic and i had a lake for a trunk i used this stuff and its works great. its also paintable after it cures so you can coat it to the factory color with some touch up also.

OR VietVet · Feb 22, 2020

01YukonSC said:
Hasn't this bought about silicone. Haven't used it before but will look into it. I'm sure that'd be far easier than welding. Will probably let the flex seal tape go for a while and recheck at the next oil change (just did it last weekend) to see how it's holding up.

Now to take apart the dash and clean out the vents to try to get rid of the moldy smell.

Thanks for the help everyone.

I don't remember the name but there is a spray that you can do through the vents that kills the mold smell and kills the mold as well. I have seen it at parts stores. Do some research before the dash teardown.

Desperately need to find leak

01YukonSC

TYF Newbie

01YukonSC

TYF Newbie

01YukonSC

TYF Newbie

OR VietVet

Multnomah Falls

HiHoeSilver

Away!

OR VietVet

Multnomah Falls

01YukonSC

TYF Newbie

wjburken

drakon543

Full Access Member

OR VietVet

Multnomah Falls

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