Q: Problem with filling tank. Code says bad evap canister/valve and/or gas cap

asked by on

I can't fill the tank. When I'm at the pump it wont let me pump more than a few squirts at a time, sometimes. Mechanic did smoke test and some diagnostics and found there's no leak, but that it's likely the charcoal canister/valve and maybe need a new gas cap. I can't ever get these guys to contact me back, so I'm asking here. I'm not sure if I need a new canister, or just the valve and lines, or both.

My car has 166400 miles.
My car has an automatic transmission.

Hi there. More often than not, the issues filling up the fuel tank is attributed to a bad EVAP vent solenoid. It is the job of the EVAP vent solenoid to allow air into the charcoal canister so that the EVAP system can pressurize and function properly. When the solenoid is opened, air is allowed into the EVAP system to relieve any pressure that may be present as a result of purging the EVAP system. However, it could be other parts of the EVAP system, so you should have a professional mechanic inspect your vehicle first to know for sure what’s causing your fuel tank issues.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Problem with filling tank. Code says bad evap canister/valve and/or gas cap

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Difficult startup, chugging and rough revving

Hello. If the engine is having trouble starting after it has ran for a while and you are getting the smell of fuel, then it may be a failing fuel injector or an issue with a bad sensor. Most of...

Q: I just put in a new radiator and a new thermostat in my Cavalier and I'm still overheating there's no leak but my water keep disap

Anytime an engine is overheated you may warp or crack the cylinder head that may cause coolant to get into one or more of the cylinders. You should first have the cooling system pressure tested to see if the cooling...

Q: Car will not start - 2007 Chevrolet Cobalt

Hey there. You may have a problem with the anti-theft system in the vehicle disabling the start circuit. You will notice the theft light on the dashboard stays on. If you do not see the theft light come on and...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.