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DISCUSSION => Engine management => Topic started by: kaiser16 on March 17, 2012, 02:27:37 PM

Title: Fuel tank breather valve
Post by: kaiser16 on March 17, 2012, 02:27:37 PM

Hey there, I'm trying to figure out where my fuel tank breather valve is supposed to go. With the realoem diagram its impossible to tell where it actually goes. Any help is appreciated!

Title: Fuel tank breather valve
Post by: DesktopDave on March 17, 2012, 05:42:33 PM

On my e30 it's just off the charcoal canister, on the vac line that runs to the throttle body.  It looks a lot like this RealOEM-ish diagram here at BMW of South Atlanta's site (http://parts.bmwofsouthatlanta.com/showAssembly.aspx?ukey_assembly=420857).

I'd bet there's only an inch or two (2-5cm) of vac line between the two.

Title: Fuel tank breather valve
Post by: keflaman on March 17, 2012, 06:56:03 PM

Holy smokes! Those little things are expensive!!

Title: Fuel tank breather valve
Post by: kaiser16 on March 22, 2012, 07:22:57 AM

When I bought the car it didn't have a charcoal canister, is it a bad idea not to have one, what exactly is the role of this canister.