purge canister I have read my books, but still not clear. Can someone explain exactly what the purge canister does and where all the vacuum lines go? |
Re: purge canister The purge canister is really part of the Evaporative Emissions Control System. The function is to draw fuel vapors from the tank and carburetor, store them in a charcoal filter in the canister and them burn them during normal engine operation. The system is supposed to trap and store fuel vapors that evaporate from the fuel tank, throttle body, and intake manifold. So, the canister doesn't do much other than store the vapors. There is a solenoid valve which controls vacuum to a purge valve in the canister. The valve is controlled by the ECM. If the purge valve is inoperative, the canister damaged, the hoses split or cracked, or hoses connected to wrong tubes, one may experience poor idle, drivability or stalling. Hope that helps a little. |
Re: purge canister thank you, that was very helpful |
Re: purge canister
Originally Posted by G2G-IROCZ
(Post 3857368)
The purge canister is really part of the Evaporative Emissions Control System. The function is to draw fuel vapors from the tank and carburetor, store them in a charcoal filter in the canister and them burn them during normal engine operation. The system is supposed to trap and store fuel vapors that evaporate from the fuel tank, throttle body, and intake manifold. So, the canister doesn't do much other than store the vapors. There is a solenoid valve which controls vacuum to a purge valve in the canister. The valve is controlled by the ECM. If the purge valve is inoperative, the canister damaged, the hoses split or cracked, or hoses connected to wrong tubes, one may experience poor idle, drivability or stalling. Hope that helps a little. |
Re: purge canister Basically, if it's not hooked up you're venting gas vapors into the air instead of storing them in the canister and burning them in the engine when you drive. |
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