help with vacuum line routing
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Joined: Jul 2011
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From: Gilbert, AZ
carbon canister
On '73s the charcoal canister has one 5/16" line that goes back to the fuel tank. The second line is a 3/4" line that goes directly to the side of the air filter housing. It doesn't go through a valve.
In the center of the charcoal canister is another "nipple" this is a breather and should have a cap on it. However, quite often the cap is missing and it's mistaken for another hose nipple.
The 3/4" line is available from NAPA (P/N BK825-4025). It's a corrugated aluminum tube that's 3' long. The original air filter housing had a nipple on the side of it that the hose connected to.
In the center of the charcoal canister is another "nipple" this is a breather and should have a cap on it. However, quite often the cap is missing and it's mistaken for another hose nipple.
The 3/4" line is available from NAPA (P/N BK825-4025). It's a corrugated aluminum tube that's 3' long. The original air filter housing had a nipple on the side of it that the hose connected to.
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