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What is Chevy 2003 4.8 fuel pressure?

Updated: 10/20/2022
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14y ago

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Fuel pressure: key on engine off----VIN# Z is 48 to 54 LBS. PSI
All others are----55 to 62 LBS. PSI
No lower and no higher on either one. Are it won't run right.
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Q: What is Chevy 2003 4.8 fuel pressure?
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