California bike owners... removing charcoal canistee
Elite HDF Member
Joined: Apr 2012
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From: San Diego
As for the lines from the charcoal canister, the one that goes to the throttle body needs to be plugged. It will draw unfiltered air into the throttle body if it isn't. The line that goes to the gas tank is just a vent. Leave that one long and open down low somewhere. If you do not want to remove the line coming from the throttle body, leave it in place, but pull it off the port on the throttle body and throw a vacuum cap on it right there. This way you are not relying on that entire plastic line to keep a seal.
Elite HDF Member
Joined: Apr 2012
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From: San Diego
Please explain this. The throttle body has a "vent"? Those of you that say this does not need to be capped, go out and look at a bike.
The evaporative emissions system takes the vapors from the fuel tank vent and draws them back into the intake stream. So you have a line that comes from the fuel tank vent to the charcoal canister. The return line goes into the throttle body. If you pull that line off there is a vacuum at that port on the throttle body. This is behind the air cleaner. Cap this.
Also, I would not recommend joining the lines without the canister. Might start sucking fuel into the vacuum port. That would be bad too.
The evaporative emissions system takes the vapors from the fuel tank vent and draws them back into the intake stream. So you have a line that comes from the fuel tank vent to the charcoal canister. The return line goes into the throttle body. If you pull that line off there is a vacuum at that port on the throttle body. This is behind the air cleaner. Cap this.
Also, I would not recommend joining the lines without the canister. Might start sucking fuel into the vacuum port. That would be bad too.
Elite HDF Member
Joined: Apr 2012
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From: San Diego
Here I made a diagram. This is from a 2012 Softail, but the only difference I could see is your bike does not have the purge solenoid. Everything else should work the same, so I drew the red line to show that yours would be connected there.
Former Sponsor
Joined: Aug 2005
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Never plugged either of mine. Put 80K on the bike without issue. No need to plug anything. They are both bents. It is not like something is going to get sucked up into them. Zip tie hoses to the frame and call it a day.
Elite HDF Member
Joined: Apr 2012
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From: San Diego
So you feel an open vacuum line going directly to the throttle body is ok? Really?!?
Grand HDF Member
Joined: May 2008
Posts: 4,624
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From: Newcastle, Ca.
I plugged the throttle body line with a bolt and zip tied it to ensure it will not come out. Left the tank vent line open. no big deal. Hard to tell about your brake line without seeing it as it is a tight fit, but compressor did fit on mine albeit with just enough room.
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Elite HDF Member
Joined: May 2012
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From: Central Cali
I was going to but I have to work next Saturday and I don't want to wait another week. Lol I installed my bars, wired my front and rear turn signals among other things so I think I can do it. I just thought it would be cool to see his shop. But this forum is great and if I run into a snag I know you guys will help. 
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Elite HDF Member
Joined: May 2012
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From: Central Cali
As for the lines from the charcoal canister, the one that goes to the throttle body needs to be plugged. It will draw unfiltered air into the throttle body if it isn't. The line that goes to the gas tank is just a vent. Leave that one long and open down low somewhere. If you do not want to remove the line coming from the throttle body, leave it in place, but pull it off the port on the throttle body and throw a vacuum cap on it right there. This way you are not relying on that entire plastic line to keep a seal.
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Elite HDF Member
Joined: May 2012
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From: Central Cali
What year is your bike? Maybe that is the difference. Mine is an 07.
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Elite HDF Member
Joined: May 2012
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From: Central Cali
I plugged the throttle body line with a bolt and zip tied it to ensure it will not come out. Left the tank vent line open. no big deal. Hard to tell about your brake line without seeing it as it is a tight fit, but compressor did fit on mine albeit with just enough room.
I'm pretty sure I see where the line connects to the throttle body. Its the only rubber line I see that attaches and its on the left top part.