SMOG (Fuel Evap)
Thread Starter
Intermediate
Joined: Dec 2021
Posts: 44
Likes: 5
From: San Diego
SMOG (Fuel Evap)
Hello Everyone,
I hope you're all doing well. I'm making this thread in the hopes that someone who has dealt with SMOG issues in the past can help. I recently went to get my 82 SMOG tested and my "Fuel Evaporative Controls Functional" failed. Has anyone else dealt with this issue, and if so, is this a repair I can likely diagnose and do myself? Please let me know. I appreciate all of your assistance over the years. Your kindness and guidance has not gone unnoticed.
I hope you're all doing well. I'm making this thread in the hopes that someone who has dealt with SMOG issues in the past can help. I recently went to get my 82 SMOG tested and my "Fuel Evaporative Controls Functional" failed. Has anyone else dealt with this issue, and if so, is this a repair I can likely diagnose and do myself? Please let me know. I appreciate all of your assistance over the years. Your kindness and guidance has not gone unnoticed.
Melting Slicks
Joined: Apr 2001
Posts: 2,116
Likes: 221
From: Ca.
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,597
Likes: 7,046
From: New Or-leens Loo-z-anna
Also sniff the charcoal cannister to see if it smells like old or raw fuel inside it. you can rebuild/recharge the cannister with a charcoal pack while you are testing the cannister vacuum vlave as another member suggested.
Burning Brakes
Joined: Jan 2005
Posts: 945
Likes: 61
From: Palm Desert, CA
Another area to check is the medal vapor line that runs from the back of the gas tank to the vapor canister on the drivers side. I had a friend who's vapor line, running from the back of the gas tank, near the rear drivers tire rusted. He kept failing the gas fume leak at the gas tank during a CA smog fume test. We were able to find the leak in the vapor line above the driver side rear tire. We secured the leak with a rubber hose and tighten down with hose clamps. 50 year old car - gas vapor lines do rust and cause fume leaks.
Heel & Toe
Joined: Jun 2023
Posts: 16
Likes: 23
From: Treasure Lake, PA
Another area to check is the medal vapor line that runs from the back of the gas tank to the vapor canister on the drivers side. I had a friend who's vapor line, running from the back of the gas tank, near the rear drivers tire rusted. He kept failing the gas fume leak at the gas tank during a CA smog fume test. We were able to find the leak in the vapor line above the driver side rear tire. We secured the leak with a rubber hose and tighten down with hose clamps. 50 year old car - gas vapor lines do rust and cause fume leaks.
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