Toyota Pick-ups/Land Cruiser/4Runner 1970-1988

Evaporative Emission Control Canister


See Figures 1 and 2

Click image to see an enlarged view

Fig. Fig. 1: Using compressed air to clean the charcoal canister

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Fig. Fig. 2: When cleaning the canister on later models, blow air into the outer vent pipe while plugging the other two

There is no charcoal canister for 1970-71 engines. It can be found on the front of the left fender on late 1971-74 trucks and at the rear of the engine compartment, on or near the firewall on 1975 and later trucks (if so equipped).

The canister functions to cycle the fuel vapor from the fuel tank and carburetor float chambers into the intake manifold and eventually into the cylinders for combustion. The activated charcoal element within the canister acts as a storage device for the fuel vapors at times when the engine operating conditions are not conducive to the efficient burning of the vapors.

The only required service for the canister inspection at the intervals specified in the Maintenance Chart at the end of this section. If the charcoal element is gummed up, the entire canister will require replacement. Disconnect the canister purge hoses, loosen the retaining bracket bolt(s) and lift out the canister. Installation is simply the reverse of the removal process.