Canada - Fuel System - Fuel Injector Ticking Noise
BulletinTSB2095R
Issue Date
March 11, 2005
Title
FUEL INJECTOR TICKING" NOISE
Component
ENGINE MECHANICAL
Models
'01 - '03 RX300
TSB REVISION NOTICE:
- June 09, 2005: Labor time has been changed.
Previous versions of this TSB should be discarded.
INTRODUCTION:
Some customers with 2001 - 2003 model year RX 300 vehicles may complain of a "ticking" noise from the engine compartment when the engine is idling. Updated fuel main tube and fuel tube clamps are now available. In addition to updated parts, a second fuel pressure pulsation damper assembly has been added to improve this condition.
APPLICABLE VEHICLES:
- 2001 - 2003 model year RX300 vehicles.
PARTS INFORMATION:
REQUIRED SSTs:
WARRANTY INFORMATION:
REPAIR PROCEDURE:
CAUTION:
- Do not smoke or work near an open flame when working on the fuel system.
- Keep gasoline away from rubber or leather parts.
- Wear safety goggles while working with fuel system under pressure.
- Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
- Even after discharging the fuel pressure, place a shop rag over fittings as you separate them to reduce risk of fuel spray on yourself or in the engine compartment.
1. Discharge fuel system pressure.
A. Disconnect the fuel pump electrical connector via access panel under rear seat.
B. Start the engine. After the engine has stalled, turn the ignition switch OFF.
C. Disconnect negative (-) battery cable.
D. Reconnect the fuel pump electrical connector and reinstall rear seat.
2. Disconnect fuel pipe sub assembly No. 1.
A. Disconnect the fuel pipe clamp No. 1 from the connector.
B. Check if there is any dirt or mud on the pipe and around the connector before disconnecting the fuel line. Clean if necessary.
C. Disconnect the connector from the hose while pinching portion "A" with your fingers as shown in illustration.
D. If the connector and pipe are stuck, pinch the fuel pipe, push and pull the connector by hand to disconnect them. Do not use any tools.
E. Drain the fuel that remains inside fuel pipe sub-assembly No. 1.
F. Place a tray under the vehicle or point of disconnection, if needed, to catch any fuel that may spill.
G. Protect the disconnected fuel lines from debris by covering with a vinyl or plastic bag.
H. Remove original pulsation damper from rear fuel rail.
I. Remove and discard remaining bolt holding fuel pipe sub-assembly No. 1 to front fuel rail.
3. Install the new Fuel Pipe Sub-assembly No. 1 onto the vehicle.
4. Install both the original pulsation damper and the new (additional) damper with new fuel pipe hose gaskets as shown, and torque to the following specifications.
Torque: 33 N-m (24 ft-lbf, 331 kgf-cm)
5. Check for fuel leaks.
A. Reconnect the negative battery terminal.
B. Connect the Lexus Diagnostic Tester.
C. Turn the ignition switch to the "ON" position (do NOT start engine).
D. Turn the Diagnostic Tester ON.
E. Select "1. DIAGNOSIS" on the Diagnostic Tester."
F. Select "2. ENHANCED OBD II."
G. Select "3. ACTIVE TEST."
H. Select "FUEL PUMP/SPD."
I. Turn on the fuel pump with Active Test by pressing the right arrow on the Diagnostic Tester.
J. Check for fuel leaks.
K. Check and clear any DTCs that may have been set while performing the repair.
6. Once confirmed that no leaks are present, take vehicle on a test drive to ensure any air trapped in the pulsation dampers has been purged.
7. Repair is complete.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.