1993 Geo Metro Base, 2D Hatchback, AutomaticFACTORY OEM SERVICE PROCEDURE

Fuel Pressure

NOTE: For fuel pump specifications, see FUEL PUMP PERFORMANCEΒ  table.

Release fuel pressure. See FUEL PRESSURE RELEASEΒ  . Disconnect negative battery cable. Remove air cleaner assembly. Remove fuel inlet hose from throttle body. Install Fuel Pressure Gauge (J-34730-1) and Adapter (J-34730-75). See Fig 1 . Reconnect negative battery cable. Check fuel pressure. SeeFigure , Figure and Figure . Release fuel pressure. Remove fuel pressure gauge.

Fig 1: Installing Fuel Pressure Gauge
G91C16354Courtesy of GENERAL MOTORS CORP.
FUEL PUMP PERFORMANCE

Application Pressure: psi (kg/cm2 )
Metro (1) 23-30 (1.6-2.1)
(1) With ignition on and engine off.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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