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Too much pressure builds up in the gas tank, what causes this?

Tiny
BASHFUL14
  • MEMBER
  • 1991 CHEVROLET LUMINA
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 423,789 MILES
My car listed above is a Euro. It seems to build up a lot of pressure in the gas tank when the gas is running low. I can smell gas, time to time too. What could this be from?
Thursday, July 28th, 2022 AT 1:30 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,057 POSTS
It sounds like the EVAP purge solenoid is not working. Here is the location so you can change it out which should fix the problem. The solenoid is up by the engine. Check out the diagram (below). Please let us know what happens.
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Thursday, July 28th, 2022 AT 9:52 AM

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