Cannot open fuel cap on sym200i evo - 2010 Sym Joyride 200i Evo

maybe try wd40 on key and in barrel of fuel cap. failing that try wd40 around the fuel cap itself if no joy try respraying going back and trying etc

there should be a lever on one side or the other of the seat that will open it

The evos sytem on chevys is the problem,,,evap operating system,,,evos,,, the vent valve soliniod, or vent valve purge,,on the intake of the engine is sticking in the open position,, i cant remember which its called but its the one on the intake,,, what happens is it sticks open position and when you fill your car with gas it pushes all the gas fumes into the intake,,, causeing a flooding ,no start , or hard start situation,,,if you cant or dont want to fix,it, you can leave your car running when getting gas it will be fine ,,which is the cheap fix,,,, the evos system has 4 componets,,, vent valve solinoid, vent valve purge, charcole canister, fuel presure sensor(top of fuel tank) all can be replaced for around 125 bucks if you do some seaching around and doing the labor yourself,,check out you tube,,,

P0446 Nissan - Evaporative System Canister Vent Control Valve Circuit
Possible causes - Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Vent control valve harness is open or shorted
- Vent control valve circuit poor electrical connection
- Faulty vent control valve

Tech notes Before replacing any parts, try re-tighten the gas cap and clearing the code. If the cap or cap seal is damage replaced cap and clear the code.

P0446 HYUNDAI - EVAP Emission System Vent Control Valve Open Circuit

Possible causes- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Vent control valve harness is open or shorted
- Vent control valve circuit poor electrical connection
- Faulty vent control valve

InInside the drivers door in the back of the storage compartment is the switch to open the fuel door.

P0446 - Evaporative Emission Control System Vent Control Circuit Malfunction

Possible causes - Missing or loose Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close (replace cap)
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve. Try a new gas cap 1st.

It sounds like you've got either a fuel problem or an ignition problem. The fuel problem is probably the easiest to troubleshoot. Disconnect your fuel line and the carb and put it into a empty gas can. Turn on the petcock and observe the fuel running into the can. Watch it long enough for at least a quart of fuel to run into the can. If, after a short while, the fuel flow slows or stops, loosen your fuel cap. If the flow picks back up, replace the fuel cap. If not, drain the tank and pull the petcock and find out what the problem with that is.

If the fuel is alright, the ignition may be the problem. Has the engine recently started to make a strange whining noise that sounds like an alternator on a car whining? If so, you may have lost an inner camshaft bearing. About the only thing you can check with a meter on your ignition system is the coil. Disconnect the small wires from the coil and use an ohm meter to check the resistance of the primary side of the coil. It should be between 2 and 3 Ohms.

Good Luck
Steve

Mitsubishi 2006 faulty fuel cap, leaking vent or purge solenoid, EVAP hose faulty or leak on fuel tank.... replace the fuel cap and a week later the light was back on...the code is P0442..what to do next