Saab Workshop Service and Repair Manuals > 900 L4-1985cc 2.0L DOHC Turbo EFI (1985) > Powertrain Management | Tune-up and Engine Performance Checks | Fuel Pressure | System Information | System Diagnosis | Test Set-Up

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Fuel Pressure: Testing and Inspection
Residual Pressure

Turn the fuel switch to the on position. Turn the switch off. If the pressure remains within 1.5 - 2.9 psi (0.1 - 0.2 bar) of the original fuel pressure
after 10 minutes of the fuel pump off, the system is good. If the pressure drops out of specifications, check for leakage in the pressure regulator
and the non-return valve.

Powertrain Management
Tune-up and Engine Performance Checks / Fuel Pressure / System Information
System Diagnosis / Test Set-Up
Page 1744

Test Set-Up|Page 1745 > < Test Set-Up|Page 1743

Saab Workshop Service and Repair Manuals

900 L4-1985cc 2.0L DOHC Turbo EFI (1985)

Powertrain Management Tune-up and Engine Performance Checks / Fuel Pressure / System Information System Diagnosis / Test Set-Up Page 1744

Powertrain Management Tune-up and Engine Performance Checks / Fuel Pressure / System Information System Diagnosis / Test Set-Up Page 1744

Powertrain Management
Tune-up and Engine Performance Checks / Fuel Pressure / System Information
System Diagnosis / Test Set-Up
Page 1744

Powertrain Management
Tune-up and Engine Performance Checks / Fuel Pressure / System Information
System Diagnosis / Test Set-Up
Page 1744