GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » [GMCnet] Too much Money for my own good
[GMCnet] Too much Money for my own good [message #75212] Sun, 28 February 2010 18:48
paul h cashman is currently offline  paul h cashman   United States
Messages: 176
Registered: May 2005
Karma:
Senior Member
Ernest,
Am I missing ,something here.?
When you go to W.O.T. you dump all the Vacuum. That is when the Vacuum
Brake will release the back Barrels to open.
My Vacuum doesn't go below 7 inches Hg at W.O.T.
I've Checked, the Vacumn brake and just 4 inches Hg will energize it and
keep the back barrels from opening.
I plugged the Vacuum going to the Vacuum Brake and the Back Barrels open at
W.O.T. now.
I did this, when I was at the Ralley in Perry.it ran good ,up to Ken's
Aunt's place ,I followed Ken and stayed with him and he doesn't drive slow
,and then Home.
Paul Cashman
Riverdale Ga
From: Ernest Dankert <edankert@rochester.rr.com>
Subject: Re: [GMCnet] toop much money fopr my own good
To: gmclist@temp.gmcnet.org
Message-ID: <125a2.4b8ac6f4@gmc.mybirdfeeder.net>
Content-Type: text/plain; charset="ISO-8859-15"
Before monkeying with the carb, and for sure trouble shooting the
secondaries, make sure the timing is right where you want it to be. Case in
point, I could not get my secondaries to open when the timing was 15 degrees
retarded from spec. Next make sure the mufflers are not obstructed, you
need to pass gas to make vacuum. Vacuum will open the secondaries.

There will be a point at low vacuum where the secondaries will close and
just primaries will be open. More pronounced when lugging and losing rpm's
in climbing a hill.

_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist



Paul H Cashman Riverdale Ga 1978 Transmode 1975 Corvette 1978 Beetle Convertible 1989 Harley Davidson Sportster
 
Read Message
Previous Topic: Limited Slip
Next Topic: [GMCnet] toop much money fopr my own good
Goto Forum:
  


Current Time: Tue Sep 24 16:33:10 CDT 2024

Total time taken to generate the page: 0.02302 seconds