Fuel pressure regulator

2008 CHEVROLET IMPALA
155,000 MILES • 3.9L • 6 CYL • 2WD • AUTOMATIC
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KEVINSKUTNIK007
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  • 1 POST
I am getting a code po172, running rich. I smell the fuel when starting. Open loop, checked fuel pressure and it is loosing pressure at a few pounds per minute. I am thinking that it is the fuel pressure regulator, but can not find it . Help.
Feb 11, 2018 at 11:45 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good afternoon.

The pressure regulator is part of the fuel pump assembly.

what is the actual fuel pressure?

Also, check your air filter and also, a bad purge valve for the evap system will cause this rich condition.

does it have any codes set?

roy
Feb 12, 2018 at 1:36 PM
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