SC 300 L6-3.0L (2JZ-GE) (1992)
- Reconnect vacuum hose.
- Check fuel pressure.
Desired -
33 to 37 psi (226 to 265 kPa)
- If pressure is incorrect, or did not change, check for available vacuum at regulator. If vacuum is present, replace regulator.
- Stop engine.
- Check fuel pressure 5 minutes after engine shut-off.
Desired -
Above 21 psi (147 kPa)
- If pressure does not hold, block return line and repressurize system by installing jumper wire and turning on ignition for a few seconds.
- If pressure now holds, replace pressure regulator.
- If pressure still does not hold, replace fuel pump.