| Re: [GMCnet] need a bit of help with vacuum hose routing / electric wire 1978 [message #313365] |
Thu, 16 February 2017 23:30  |
James Hupy
Messages: 6806
Registered: May 2010
Karma:
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Senior Member |
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In the carb. section of the service manual, there is a illustration of the
carb and all the vacuum ports on it. Each port is assigned an alphabet
letter, and where the hose goes. It goes along with the emissions section.
In this case, R.T.F.M. is the best advice I can think of. I am presently in
California attending to funeral arrangements for my step-daughter, and am
not near my laptop or hardcopy of the manual or I would look it up and give
you the page numbers. Sorry.
Jim Hupy
On Feb 16, 2017 9:19 PM, "David Morrison" wrote:
Here's a update, i'm still trying to figure out a few of them
i found the solenoid, and i believe i found the vacuum delay so here's what
i goten figured out so far
A - Solved/Repaired
B - Hose Connection to vacuum Which i'm believe i'm missing unless this is
it ?
(http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_
20170214_164900_zpsbw0kprpm.jpg.html) and then to hose connection G
C - Solved/Repaired
D - Solved/Repaired
E - Solved/Repaired
F - Solved/Repaired
G - (see above note B)
H - Unknown hose connection - is this the connection to air filter ?
(http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_
20170213_153643_zpsrfevwezo.jpg.html)
some links to better show it's position in the base of the rear (facing) of
the carburator
(http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_
20170214_165127_zpsryrtrll9.jpg.html) & this next one it's hidden a bit by
the bracket (http://s3.photobucket.com/user/DavidLive/media/1978%
20GMC%20motorhome/IMG_20170214_165147_zpsskyyyhzk.jpg.html)
I - Unknown Connection, My understanding is it goes to the vacuum can, but
i'm not sure where it's located yet ?
http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_
20170214_165035_zpsuw8y8yhu.jpg.html
J - Unknown Connection for cruise control
http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_
20170214_165057_zpsaiwzlbvj.jpg.html
Thanks David
--
1974 G-M-C Painted Desert #136
"Oversteer is when you hit the wall with the rear of the car, understeer is
when you hit the wall with the front of the car. Hp is how fast you hit
the wall, and torque is how far you take the wall with you when you hit it."
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