| Small Roof Leak [message #133796] |
Fri, 08 July 2011 10:26  |
Gil Slaw
Messages: 69
Registered: May 2006
Location: Hampshire, IL
Karma: 0
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My coach has a very small roof leak that I have been chasing without any luck.
I tried to put a small positive pressure in the coach with my 4hp shop vac (no idea of the CFM) and then do a bubble test.
No luck, looks like the beast leaks air faster than I can put it in.
Has anyone had any success with positive pressure leak detection?
I am looking forward to seeing comments and suggestions.
Regards to all.
Gil Slaw
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| Re: [GMCnet] Small Roof Leak [message #133820 is a reply to message #133796] |
Fri, 08 July 2011 15:14  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Gil,
You just don't have enough volume. You would need about 10 shop vacs
to get the near proper flow. I have a positive pressure unit that uses
a large furnace blower. Works great! Common practice to find leaks
in the GMC coach.
J.R. Wright
GMC GreatLaker
78 Buskirk 30' Stretch
1975 Avion (Under Reconstruction)
Michigan
On Jul 8, 2011, at 11:26 AM, Gil Slaw wrote:
>
>
> My coach has a very small roof leak that I have been chasing without
> any luck.
>
> I tried to put a small positive pressure in the coach with my 4hp
> shop vac (no idea of the CFM) and then do a bubble test.
>
> No luck, looks like the beast leaks air faster than I can put it in.
>
> Has anyone had any success with positive pressure leak detection?
>
>
> I am looking forward to seeing comments and suggestions.
>
>
> Regards to all.
>
> Gil Slaw
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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