Fuel pressure

Tiny
JOHNEVON
  • MEMBER
  • CHEVROLET TAHOE
I have a 2003 Chevy Tahoe with a 4.8 SFI with approx 94,000 miles on it. What should the fuel pressure read at the fuel rail shreader valve?
Wednesday, November 14th, 2007 AT 9:59 PM

1 Reply

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
Around 66 psi this guide can help you with the test, you can get a fuel pressure gauge a the auto parts store by renting it for free or cheap.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here is how to change out the fuel pump if the pressure turns out low. Check out the images (below). Please let us know what happens.
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Friday, November 16th, 2007 AT 2:26 PM

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