Where does this vacuum hose go?


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buckskinner1776
Posts: 1
Joined: Sun Apr 07, 2013 8:43 pm
Location: waterford mi
Motorcycle: 84 GL1200A

Where does this vacuum hose go?

Post by buckskinner1776 » Sat May 26, 2018 4:53 pm





Took the carbs out yesterday to clean them. Had varnish issue. Have them back together now and was just looking over things to connect and realized I'm not sure where this hose goes. I will try to attach a picture. The hose in question is marked as #1 in the lower right and I've traced a red line along its path. What does this connect to??? The hose marked #2 in the upper right is the one that I believe goes up to the sensor for ignition advance.



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julimike54
Posts: 415
Joined: Sun Feb 01, 2015 12:21 pm
Location: Euless, Texas
Motorcycle: 1986 GL1200A original owner
2016 HD FLTRU

Re: Where does this vacuum hose go?

Post by julimike54 » Sun May 27, 2018 10:50 am

This should show where they go


Image
Riding anything is a good day!
Mike

gervais
Posts: 216
Joined: Tue Oct 24, 2017 6:49 am
Location: riviere-bleue,quebec,canda
Motorcycle: GoldWing 1984 GL1200A Aspencade

Re: Where does this vacuum hose go?

Post by gervais » Sun Jun 03, 2018 6:42 am

hi
have you find it?
i just dismantle my intake and mine is disconnected

i could send you a picture

gervais

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leakyroof58
Posts: 63
Joined: Thu Jul 14, 2016 5:12 pm
Location: bemidji,mn
Motorcycle: '87 Aspencade
Sold: 1975 Kawi 900 Z1, Honda 350 Scrambler

Re: Where does this vacuum hose go?

Post by leakyroof58 » Mon Jun 04, 2018 6:55 pm

First - I'm no expert by any means. Only had
my '87 for 3 years. On my used bike, I found
the hose to the ECU wasn't even connected,
so no spark advance. Found this out when I
pulled the carb rack out.....ran MUCH better
after I put it back together.........

Second - NO vacuum hose should be 'open',
or disconnected. Maybe the PO put a 'T' in the
line for some reason. Check the hoses per the
diagram carefully and see if you find something
amiss. These old bikes have had one or several
PO's, and what I found is really amazing....
set yours up per the diagrams, and be happy....



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