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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1142 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Description and Operation >> Fuel System Description >> Fuel Metering Components >> Intermediate Pressure Regulator (IPR)

Intermediate Pressure Regulator (IPR)

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fuel enters the IPR at the intermediate stage pressure of 758-1,448 kPa (110-210 psi). The IPR reduces the fuel pressure down to about 276 kPa (40 psi). The fuel exits the IPR and flows to the CNG fuel rails. The IPR is equipped with a Schrader valve for testing the inlet pressure. Refer to Fuel System Diagnosis for pressure checking procedures.

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