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Hi there all I have a rookie question. I picked up a petcock off Ebay do all units have the main fuel line and a vent tube? I was wondering what the smaller brass outlet is? Only thing I could think of is a vent. Brian
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Not a vent, the smaller nipple is for the vacuum line.
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Guest
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Rich does it connect to one of the outboard carbs? I am normally good a t marking the lines but this one got by me. Brian
Brian, we don't know what bike you have.
Carbs are numbered 1,2,3,4 from left to right as you sit on the bike.
To clarify a bit on what rphillips wrote. On the pre-1980 VM carbs, the vacuum port of the petcock goes to a port on the back of Carb body # 3. On 1980+ GSs w/ CV carbs, the vacuum port of the petcock goes to a port on the front of carb body # 2. pics below.
pre-1980 VM Carb hose connections:
1980+ CV Carb hose connections:
It's time to get yourself a manual from BikeCliff's Website, and also to read the Top 10 Newbie Mistakes Thread. Both are linked in my Signature.
Carbs are numbered 1,2,3,4 from left to right as you sit on the bike.
To clarify a bit on what rphillips wrote. On the pre-1980 VM carbs, the vacuum port of the petcock goes to a port on the back of Carb body # 3. On 1980+ GSs w/ CV carbs, the vacuum port of the petcock goes to a port on the front of carb body # 2. pics below.
pre-1980 VM Carb hose connections:
1980+ CV Carb hose connections:
It's time to get yourself a manual from BikeCliff's Website, and also to read the Top 10 Newbie Mistakes Thread. Both are linked in my Signature.
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Thank you for the photos I appreciate 82 1100E
So CV carbs. Look at the pic of the CV carbs I posted above. Not shown is another bowl vent port between 3 & 4 just like the one between 1& 2.
