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. At greater than 5000 RPM, boost pressure should be more than .7 psi (0.049 kg/cm2
). If boost pressure is not within specification, proceed to following tests as necessary.
Courtesy of MAZDA MOTORS CORP.