I can no longer fill up my gas tank in one go. This started gradually over a few months, initially only happening at one pump at the closest station.
Now, however, I can't get more than a gallon or so before the pump clicks off. I then have to pull the pump out, wait a few seconds, after which I can put in another 3/4 of a gallon or so.
I've looked at other posts which all indicate a bad EVAP solenoid, or blocked vapor line from the tank to the filler neck. I recently replaced the solenoid. For kicks, I went ahead and pulled it off and I can blow through it easily.
I removed the trunk liner and blew compressed air through the vapor line with the gas cap removed. I can feel the air - lots of it - coming out where the gas cap goes. I also blew out the line going to the solenoid and can feel the air coming out there as well. So, no indication of a blockage.
Occasionally, I get a "Check gas cap" message on the DIC, though the cap is secured. I also replaced the cap - no effect. The message is intermittent and shows up every 2-3 weeks, and always disappears fairly quickly.
Suggestions? Where to next?
Also, I've just discovered that the oil change idiots overfilled the engine by about 3 quarts (capacity is about 5). Not sure if that would cause this - seems unlikely.
Removing the CAN fuse didn't have any effect. However, I disconnected one of the vapor lines above the gas tank, and was able to fill it up in one go. This is one of the lines I cleared with the air compressor, so I'm guessing the obstruction is on the other side - in that big array of ominous black boxes.
I'll check the canister outlet for spiders later, but at least this is progress (as in, I no longer feel like a redneck who has never had a full tank of gas). (I'm from Oklahoma - i'm allowed to say "redneck.")
Here's the line I disconnected: