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Boost Pressure
- Disconnect air hose between intercooler and solenoid valve. Connect pressure gauge. See Fig 1
. Plug duty solenoid side of hose. Warm engine to normal operating temperature.
- Measure boost pressure while suddenly increasing engine speed. At approximately 4000 RPM boost should begin. Above approximately 5000 RPM pressure should be more than .07 psi (0.049 kg/cm2
). If boost pressure is not within specification, proceed to following tests as necessary.
Courtesy of MAZDA MOTORS CORP.