Standard Ignition PR127 Fuel Injection Pressure Regulator

Fuel Pressure Control for Isuzu Impulse

Standard Ignition PR127 is a new, adjustable fuel injection pressure regulator for gas systems with a return-style layout. It includes a reference port and is built for direct fuel pressure control on 1985-1987 Isuzu Impulse applications.

Key Features

• Adjustable fuel injection pressure regulator for tuning fuel delivery
• Return-type system design for gas applications
• Reference port included for manifold-referenced operation
• 1 inlet and 1 outlet for straightforward fuel routing
• New replacement part from Standard Ignition
• Fits 1985-1987 Isuzu Impulse, N/A

Detailed Description

Standard Ignition PR127 is a fuel injection pressure regulator made for return-style gasoline fuel systems. It helps maintain consistent fuel pressure by responding to engine demand through the reference port, which supports stable injector operation in the fuel injection system. This part is listed for 1985-1987 Isuzu Impulse models and is a practical replacement when the original regulator is no longer controlling pressure correctly. This part cross-references Gates 22819 for the same application.

Common Problems It Can Address

• Fuel pressure that is too high or too low
• Hard starting caused by unstable fuel delivery
• Rich or lean running conditions from poor pressure regulation
• Fuel odor or drivability issues related to regulator failure
• Inconsistent injector performance on return-style systems

Installation Notes and Tips

Verify the fuel system type before installation: this regulator is for gas, return-style applications. Confirm the inlet, outlet, and reference port connections match the vehicle’s fuel plumbing, and inspect related fuel lines and seals for wear before reassembly. For fitment, use this part on 1985-1987 Isuzu Impulse, N/A.

Quality Assurance

Standard Ignition supplies this part as a new replacement component. Part number PR127 is also referenced by Standard Ignition PR127 for the same application.