Hyundai Coupes/Sedans 1986-1993 Repair Guide

Evaporative Emission Canister

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Fuel vapors from the gas tank and carburetor (created by changes in temperature) are absorbed by a charcoal filled canister. When the engine is operating, the stored vapors are sucked out of the canister and fed back to, and burned in the combustion chambers. The canisters are sealed, making cleaning unnecessary. The canister should be checked every 50,000 miles. Make sure all hoses are clamped and not dry rotted or broken. A number of types of valves are used in the canister; refer to the Emission Controls for a detailed description of their function and necessary servicing.

REMOVAL & INSTALLATION



See Figure 1

The charcoal canister on early Excel models and all Elantra, Sonata and Scoupe models is located at the firewall on the passengers side of the vehicle. On all 1990-93 Excel models the charcoal canister is located below the battery tray.



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Fig. Fig. 1: Location of the evaporative canister-Elantra

Except 1990-93 Excel
  1. Label the hoses according to their position on the canister.
  2.  
  3. Remove the connecting hoses from the canister.
  4.  
  5. Loosen and remove the canister retaining band bolt or clip.
  6.  
  7. Remove the canister.
  8.  
  9. Check the hoses, replace any that are cracked, soft or collapsed. Install the new canister.
  10.  

1990-93 Excel
  1. Disconnect the battery cables and remove the battery.
  2.  
  3. Remove the battery tray mounting bolts and remove the tray.
  4.  
  5. Label the hoses according to their position on the canister.
  6.  
  7. Remove the connecting hoses from the canister.
  8.  
  9. Loosen and remove the canister retaining band bolt or clip.
  10.  
  11. Remove the canister.
  12.  
  13. Check the hoses, replace any that are cracked, soft or collapsed. Install the new canister.
  14.  
  15. Install the battery tray and the battery.
  16.  

 
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