Air from fuel cap

Tiny
MRZAZA
  • MEMBER
  • 1996 OPEL VITA
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 50,000,000 MILES
Why when I remove the fuel cap air comes out and sometimes sounded loud?
Thanks
Tuesday, December 4th, 2018 AT 5:22 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi and thanks for using 2CarPros.

It is normal for the fuel tank to have pressure. However, excessive is not. The system should have a vent to the evaporative emissions system as well as a fuel tank pressure sensor which will vent the system as needed.

Let me know if you have other questions.
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Tuesday, December 4th, 2018 AT 5:06 PM

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