321D (small evap leak) Diag

[Roberth135]

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

[AndrewDouglasBird]

Did you ever solve this? I'm having the same fault pop up.

[Roberth135]

Originally Posted by AndrewDouglasBird

Did you ever solve this? I'm having the same fault pop up.

No. The light is still on the dash. Let me know if you figure it out. The oil leaks have taken priority lol.