The vapors produced by fuel here are generally a result of fuel storage in the fuel tank, fuel collection in the carburetor and as a fuel supply system in the intake manifold; this system ensures that these hydrocarbon emissions do not escape to the atmosphere. The EVAP system comprises of a canister with charcoal, EVAP hoses linking the canister to the fuel tank and a thermo switch or an ECM controlled solenoid valve. Under non-driving condition, fuel vapors are stored in the canister and when the engine is running then intake airflow purges these vapors and burns them. In some models, it directly commands a solenoid valve that manipulates vacuum to the purge valve situated in the canister, it turns the valve off under cold engine conditions and shuts it when the engine is warm. Functions such as idle, stalling, driveability problems are signs that may be occasioned by a bad purge valve, a damaged canister or even contaminated hoses. Symptoms of fuel depletion or smell may be fuel line leakage or a canister failure. It is recommended that each of the hoses should be checked for kinks; free from leaks and cracks and if not, the should be repaired or replaced accordingly. An analysis of the canister should also be done with emphasis being put on the fact that if it leaks, it should be replaced as well as the hoses. However, for further testing a dealer service department should be consulted. The air cleaner assembly needs to be taken off for replacement of the charcoal canister; negative battery cable should be disconnected along with unplugging solenoid electrical connectors and vacuum hoses labeled and disconnected. While dismantling, the mounting clamp screw is unscrewed first, followed by the lifting of the canister out of the mounting area; conversely, installation begins with the former while the latter ends with the former.