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321D (small evap leak) Diag
Hey everyone!
I have had 321D code and service engine soon light on my 135. I already bought a new gas cap and it didn’t go away.
Finally got around to buy a smoke tester to diagnose where the leak is coming from.
I disconnected the purge valve and put the smoke tester in the line that goes under the throttle body, but all the smoke came out of the charcoal canister because if I understand correctly it is vented to atmosphere while the car is not running.
What is the proper procedure to smoke test the evap system?
Thanks
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