Removed Stock airbox's Charcoal Filter
07-20-2007, 06:38 PM
#21
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SL Member
Join Date: Dec 2005
Posts: 1,735
I am mystified by the charcoal filter.
The dealer parts fiche does not show this charcoal filter, so it has no part number, and must be an integral part (riveted in) of the air box top assembly.
The charcoal filter is indeed inline, being right above the air filter. When raising the top of the airbox to replace the air filter, you can feel the charcoal filter and see it with a mirror. It almost touches the air filter.
The Emission Control section of the Repair Manual does show a "purge line" (hose) from the (charcoal) fuel cannister to a purge valve on the top of the airbox. But this is way above the charcoal filter and downstream from it.
Maybe the charcoal filter is to absorb any fuel fumes that may accumulate in the airbox from the purge line, when the engine is stopped and there is no air flow.
The dealer parts fiche does not show this charcoal filter, so it has no part number, and must be an integral part (riveted in) of the air box top assembly.
The charcoal filter is indeed inline, being right above the air filter. When raising the top of the airbox to replace the air filter, you can feel the charcoal filter and see it with a mirror. It almost touches the air filter.
The Emission Control section of the Repair Manual does show a "purge line" (hose) from the (charcoal) fuel cannister to a purge valve on the top of the airbox. But this is way above the charcoal filter and downstream from it.
Maybe the charcoal filter is to absorb any fuel fumes that may accumulate in the airbox from the purge line, when the engine is stopped and there is no air flow.
07-20-2007, 08:17 PM
#22
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Join Date: Jul 2005
Location: NOT HERE
Posts: 938
Originally Posted by vintage42
I am mystified by the charcoal filter.
The dealer parts fiche does not show this charcoal filter, so it has no part number, and must be an integral part (riveted in) of the air box top assembly.
The charcoal filter is indeed inline, being right above the air filter. When raising the top of the airbox to replace the air filter, you can feel the charcoal filter and see it with a mirror. It almost touches the air filter.
The Emission Control section of the Repair Manual does show a "purge line" (hose) from the (charcoal) fuel cannister to a purge valve on the top of the airbox. But this is way above the charcoal filter and downstream from it.
Maybe the charcoal filter is to absorb any fuel fumes that may accumulate in the airbox from the purge line, when the engine is stopped and there is no air flow.
The dealer parts fiche does not show this charcoal filter, so it has no part number, and must be an integral part (riveted in) of the air box top assembly.
The charcoal filter is indeed inline, being right above the air filter. When raising the top of the airbox to replace the air filter, you can feel the charcoal filter and see it with a mirror. It almost touches the air filter.
The Emission Control section of the Repair Manual does show a "purge line" (hose) from the (charcoal) fuel cannister to a purge valve on the top of the airbox. But this is way above the charcoal filter and downstream from it.
Maybe the charcoal filter is to absorb any fuel fumes that may accumulate in the airbox from the purge line, when the engine is stopped and there is no air flow.
or catch the fumes at shut down, when not being sucked into the engine? as a back up to the charchol filter in the evap canister.
01-26-2008, 05:58 AM
#24
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Music City Scions
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Join Date: May 2004
Location: West TN - Land of twisty roads
Posts: 11,808
Originally Posted by brionxB
not to change the subject...
but just to be sure,
in the diagram in the first page, the snorkel is the tube in the bottom half of the airbox diagram right?
but just to be sure,
in the diagram in the first page, the snorkel is the tube in the bottom half of the airbox diagram right?
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