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Vacuum Hose Diagram for B18C1

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Old Nov 25, 2013 | 04:55 AM
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Default Vacuum Hose Diagram for B18C1

I am in the final stages of my GSR swap and am installing the hoses and dont know exactly where they all go... does anybody have a full hose diagram for a B18C1?
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Old Nov 25, 2013 | 07:03 AM
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Default Re: Vacuum Hose Diagram for B18C1

http://s22.postimg.org/jdpejcdsf/page0305.jpg
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Old Nov 25, 2013 | 12:30 PM
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Default Re: Vacuum Hose Diagram for B18C1

OBD1



OBD2
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Old Apr 26, 2026 | 08:15 PM
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Default Re: Vacuum Hose Diagram for B18C1

Do you guys know what line 12 is? Like what the name of it and maybe part number? My 2000 gsr has a skunk 2 IM and popping a p1457 code.
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Old Apr 27, 2026 | 06:28 AM
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Default Re: Vacuum Hose Diagram for B18C1

I doubt the part itself is still available except maybe from eBay. I can see if I still have mine, but you can buy 3/8" replacement tubing from a car parts store for a few dollars per foot. It needs to be solvent safe.
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Old Apr 27, 2026 | 06:33 AM
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Default Re: Vacuum Hose Diagram for B18C1

Originally Posted by GagnarTheUnruly
I doubt the part itself is still available except maybe from eBay. I can see if I still have mine, but you can buy 3/8" replacement tubing from a car parts store for a few dollars per foot. It needs to be solvent safe.
is yours a hard line?
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Old Apr 27, 2026 | 06:40 AM
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Default Re: Vacuum Hose Diagram for B18C1

It's a short, reinforced sort of bumpy rubber line. It connects the purge solenoid to the back of the intake manifold. The other line from the purge solenoid looks the same and connects to the evap canister. I'm doing an ITR swap and I have basically the entire vacuum and emissions system for a GS-R. This is fresh in my mind because I was messting with this system this weekend.

I think the p1457 may indicate a problem with the canister diaphragm valve.
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Old Apr 27, 2026 | 07:01 AM
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Default Re: Vacuum Hose Diagram for B18C1

Originally Posted by GagnarTheUnruly
It's a short, reinforced sort of bumpy rubber line. It connects the purge solenoid to the back of the intake manifold. The other line from the purge solenoid looks the same and connects to the evap canister. I'm doing an ITR swap and I have basically the entire vacuum and emissions system for a GS-R. This is fresh in my mind because I was messting with this system this weekend.

I think the p1457 may indicate a problem with the canister diaphragm valve.

i was reading another thread online. Here is the thread. People are saying its the issue with the line we are talking about.

https://www.team-integra.net/threads...ld-cel.171500/
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Old Apr 27, 2026 | 08:08 AM
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Default Re: Vacuum Hose Diagram for B18C1

How is your evap canister and evap purge solenoid connected right now?
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Old Apr 27, 2026 | 08:46 AM
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Default Re: Vacuum Hose Diagram for B18C1

Originally Posted by GagnarTheUnruly
How is your evap canister and evap purge solenoid connected right now?
im gonna check sometime this week when i have some free time.
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Old Apr 27, 2026 | 09:16 PM
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Default Re: Vacuum Hose Diagram for B18C1

Originally Posted by GagnarTheUnruly
How is your evap canister and evap purge solenoid connected right now?
so i found this. the purge nipple is missing a line. This is connected to the two way valve solenoid right?



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Old Apr 28, 2026 | 05:17 AM
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Default Re: Vacuum Hose Diagram for B18C1

That's the equivalent to line 7 for your diagram. Run it to the evap purge solenoid. It'll be the port farthest from the bolts on the style solenoid shown below.


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