Sienna FWD V6-3.3L (3MZ-FE) (2006)
b. Observe the following precautions when removing and installing fuel injectors.
NOTE: Never reuse the O-ring.
1. When installing a new O-ring to the injector, be careful not to damage the injector.
2. Coat the new O-ring with grease or gasoline before installing. Never use engine oil, gear oil or brake oil.
c. Install the injector to the delivery pipe and the cylinder head as shown in the illustration. Before installing the injector, be sure to apply grease
or gasoline on the place where the delivery pipe contacts the O-ring of the injector.
d. Observe these precautions when disconnecting the fuel tube connector.
1. Disconnect the fuel pipe clamp from the connector.
2. Check that there is no dirt or mud on the pipe and around the connector before disconnecting them. Clean them if necessary.
3. Disconnect the connector from the hose while pinching part A with fingers as shown in the illustration.