12-14-2013, 01:11 AM | #1 |
Registered User
Join Date: Dec 2008
Location: Mt. Pleasant, TX
Posts: 268
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Cowl leaks
Im getting some water inside my cab, one starts under the dash, drivers side around the support for the inner fenders and the other is the drivers side fresh air vent leaks around it. i checked for debris, it was clean, is there a seam in that area? if not im guessing windshield? how can water leak around the fresh air vent, the "lungs" are clean
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12-14-2013, 08:15 AM | #2 |
Hollister, CA.
Join Date: Sep 2006
Location: Hollister, Ca.
Posts: 6,150
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Re: Cowl leaks
My suburban does the same thing. It is rotted under the dash right where the fresh air boxes are spotted to the upper cowl.
I plan on drilling out spots, and removing them for repair.
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John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!" |
12-14-2013, 09:43 AM | #3 |
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Join Date: Jul 2013
Location: Portland, Maine
Posts: 219
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Re: Cowl leaks
Mine leaks from the spot welded seam in the bottom of the cowl, in front of the glovebox. I assume there was some seam sealer between the two panels originally. This picture I stole shows the seam.
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Daily Driver '66 C10 Fleetside Short Bed - LS swap - 4L80E - Accuair eLevel |
12-14-2013, 01:00 PM | #4 |
Registered User
Join Date: Dec 2008
Location: Mt. Pleasant, TX
Posts: 268
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Re: Cowl leaks
looks like i need to remove the lung to repair?
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12-14-2013, 05:15 PM | #5 |
Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
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Re: Cowl leaks
Mike... note that the rain gutter above the windshield if it leaks, it will run to the windshield post and down either to the side panel or agaisnt the inside of the firewall. I had that issue.
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`64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip |
12-14-2013, 10:58 PM | #6 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: Cowl leaks
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
12-15-2013, 04:05 AM | #7 | |
Senior Member
Join Date: Jul 2012
Location: Harrisville, New York
Posts: 459
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Re: Cowl leaks
Quote:
The seal on mine isn't the best and I get a few drops inside in a heavy rain. I haven't looked into it full scale yet, but after a brief look, I think that's the culprit in my case. That might be the case for your under dash leak. Jonathon
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1960 GMC K1500 LB Fleet Side 1962 GMC K1000 LB Step Side 1988 Chevrolet C2500 |
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