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evap emission system leak detected (small leak)

  

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i own a 05 ford mustang about 255k miles on her, has recently thrown a p0442 code and i noticed a hissing sound after turning my car off not sure where to start on this or how to find the leak i checked the gas cap on it and it looks fine.…auto trans v6 4.0l


2 Answers
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See possible causes and troubleshooting info here:

https://www.carparts.com/blog/p0442-evaporative-emission-control-system-leak-detected-small-leak/#What_are_the_Possible_Causes_of_the_P0442_Code

 


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https://www.youtube.com/@scottykilmer/search?query=evap%20leak


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