In the pic below, it's the black thing JUST beside the hood support, on the firewall

 

The picture above is not what my car looks like. I have a 2000 SC300 and there is no canister like the one pictured above. In the meantime I still cannot fill my tank.

 

I finally fixed the problem with my gas tank. All I had to do was take my air compressor and give a blast to the little air tube near the top of the filler. I filled the tank yesterday with no problems at all.

 

Does anyone know how to accomplish this? Unless it varies by year, I don't see any way to access the filler end of the little vent tube. It's a solid line from the tank to where it mounts just below the filler mouth, and the spring door on the filler exactly covers it up when pushed open.

I thought maybe the end of the filler spout can be popped off along with the spring door, but either those little pressure tabs are super snug (I tried prying and gently hammering) or they're welded on. Inspecting them closely, they sure look welded.

Taking the rubber gasket off that surrounds the filler mouth doesn't reveal anything to work with.

I had hoped to check for obstructions in case that's keeping the tank from venting properly...

 

I have had the same problem with my 2000 SC300 for years ... have you solved it?

Gene K

 

I tried a different filler neck, but I think my main problem was the return line below the tank had a hose that wasn't even finger tight, allowing pressure loss.

 

I have THE EXACT same problem. I have a 2000 SC as well. I am going to try to clean the rubber gasket around the filler neck. I just stripped the false walls out of the back of the car and will let you guys know what I find if you are still having the issue. I am not sure whats going on, but I cannot fill the tank normally. I have to trickle the gas in the tank (and no, its not full at all). I smell gas fumes as well in the car.

If anyone has come up with a method to solves this, let me know. I also took the cap off and did not see anywhere to blow compressed air.

 

I blew the two lines out (two holes when you open the gas cap) with compressed air and it cleared whatever was in there. I took the liberty of cleaning the rubber surround the filler neck while I was in there. I filled up without a problem just now.

 

Thank you thank you thank you. I a on along trip and this just happened to me. Blew out the tube (it is on the very top of gong into the body) and all is good with the world...for now.