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454 low fuel pressure
I have a 1999 7.4 vortec with both banks throwing lean codes. Bank 1 is just slightly above 10% sometimes but bank 2 is consistently 25%. Vacuum tested good @18. New fuel pump, filter, regulator and injectors. Fuel system harness was replaced in ‘21 and I’m still getting less pressure than I’d...- Renncredible
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- fuel lean pressure
- Replies: 25
- Forum: Engine Performance + Maintenance
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