Large EVAP Leak

Tiny
CLP8773
  • MEMBER
  • 2004 SATURN VUE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 98,300 MILES
I put the truck on a little machine and it said large air leak but I don't see from where I checked hoses and I am trying to seek help
Monday, September 13th, 2010 AT 7:58 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Is the check engine light on? Do you know the codes?
It could also be a leak anywhere in the evaporative system, which could include the fuel tank or a faulty hose.

https://youtu.be/ahK_eucFi-k
https://youtu.be/iH92vcUWJzs

You also might find this article helpful:

https://www.2carpros.com/articles/how-emission-control-systems-work

I have attached a basic diagnostic procedure for EVAP.

Please let me know if you have any questions.

Thank you.
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Wednesday, July 14th, 2021 AT 2:34 PM

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