Check the fuel pressure, yours is low
1992 FUEL PRESSURE SPECIFICATIONS (TRUCKS - GASOLINE)
EngineKOER psi (kg/cm2 )KOEO psi (kg/cm2 )
4.9L EFI45-60 (3.2-4.2)50-60 (3.5-4.2)
All Others30-45 (2.1-3.2)35-45 (2.5-3.2)
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Tuesday, April 16th, 2019 AT 6:41 PM
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