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Discussion Starter #1
Code P0455: Evaporative Emission System Leak detected. (Gross Leak/ No Flow). So I changed the IAC because I had a engine warning light for that but now I get this code but I don’t understand the Gross Leak/ no flow? Also is there a way to find a leak without a smoke machine or computer?
 

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Discussion Starter #2
Found out it can be my Evac purge control valve. How should I go about changing it? Step by step and any seal?
 
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