Fuel Injector - MIL ON/Rough Idle/Hesitation/DTC's Set: Overview
Classification:EC01-014A
Reference:
NTB01-033A
Date:
October 3, 2001
FUEL INJECTOR CLEANING FOR VEHICLES WITH ROUGH IDLE, HESITATION OR MIL "ON" WITH DTC P0300-P0306 STORED
ATTENTION:
THIS BULLETIN HAS BEEN REVISED. The Service Procedure section has been revised to include an initial check of injector resistance prior to conducting cleaning for vehicles in states with alcohol in the gasoline. Please refer to this bulletin (NTB01-033a) for complete information.
APPLIED VEHICLES:
1997-98 Quest (V40)
1999-01 Quest (V41)
1997-00 Pathfinder (R50)
1999-01 Frontier (D22)
2000-01 Xterra (WD22)
APPLIED ENGINES:
All VG30E, VG33E, and VG33ER
INTRODUCTION:
After extensive research and testing of cleaning performance and chemical compatibility to our vehicles, by this service bulletin Nissan is prescribing fuel injector cleaning as the appropriate and required repair for certain injector related incidents. Fuel injection cleaning can be more effective than replacing an injector since it treats all injectors at once and can prevent later injector incidents at other cylinders. The fuel injection cleaning tool and 3M cleaning product described in this bulletin is the ONLY approved fuel injection cleaning system at this time for Nissan vehicles.
For warranty claims, fuel injection cleaning is initially being applied to VG30/VG33 engine applications described in this bulletin, but other models/engines may be added later. Dealers at their discretion may use this fuel injection cleaning on any Nissan model/engine for customer-pay preventive maintenance or repair.
SERVICE INFORMATION
If after performing Service Manual diagnostic procedures for:
^ Rough idle,
^ Engine hesitation,
^ MIL "On" DTC P0300-P0306,
It is determined that the injectors are operating but may not be providing adequate flow, the fuel injectors may need to be cleaned.
This bulletin applies to vehicles that have been in service for some time (at least 6,000 miles) and have developed one of the incidents listed above as a result of fuel related deposits.
This bulletin contains procedures for using the new 3M fuel injector cleaning system (J-45701), to remove flow-restricting deposits from the injectors.
IMPORTANT:
^ To avoid catalytic converter damage while performing injector cleaning, carefully follow the steps outlined under "Important Notes For Engine Running Condition".
^ Two (2) cans (2x10-oz) of 3M cleaner 08956 (Nissan P/N 999MP-AM103P) are used for each incident vehicle to achieve appropriate results.
^ Use of any other cleaning product, including the former Nissan Injector Cleaner P/N 99990-10017, is not permitted and may cause harm to injectors or other areas of the fuel system.
^ Only 1 can of cleaner is needed for customer-pay preventive maintenance rather than 2 cans for incident vehicles.
Cleaning Overview:
^ The 3M fuel injection cleaning system consists of a pressurized fuel injector cleaner can (3M P/N: 08956) that contains a mix of concentrated cleaning chemicals, petroleum based product, and 100 psi nitrogen gas propellant.
^ The can contains a valve that keeps the can sealed after use.
^ The 3M fuel injector cleaner can is attached to the 3M tool with a quick connect adapter.
^ The tool is then connected to the vehicle's fuel rail via a regulator/hose, in place of the inlet hose coming from the vehicle's fuel pump.
^ A clamp tool is installed on the fuel return hose to block the cleaner from entering the fuel tank.
^ The cleaning can is hung from the underhood with a clip/hanger assembly.
^ This setup is known as a fuel rail flush type of cleaning system.
Cleaning Process:
^ The engine will run reasonably smooth at warm engine idle from the contents of the cleaner because it includes petroleum based product mixed with the cleaner.
^ During cleaning, the vehicle's fuel pump is disabled and the fuel inlet hose, at the fuel rail coming from the fuel pump, is removed and plugged.
KIT NOTES:
^ The Fuel Injector Cleaner Kit (J-45701) shown is an essential tool and will be sent to each applicable dealer (see the note under "Applied Engines").
^ Additional kits can be ordered from Tech Mate at 1-800-662-2001.
^ For replacement of kit parts (except the 3M cleaner can P/N 08596), contact the 3M "Fulfillment Center" at 1-800-773-1594 or contact your local 3M sales representative.
^ Order the cleaning can P/N 08956 (Nissan P/N 999MP-AM103P) from the "Nissan Chemical Care Product Program". You can access this direct ship program three different ways:
1. Website: www.NissanChemicals.com
2. Phone: 1-800-811-0502
3. Fax: 1-904-389-8279
Fuel Injector Cleaning Precautions
Before starting the procedure, please note the following precautions:
^ During the setup and cleaning process, it is advised that a safety face shield (or suitable face and eye protection equipment) and gloves be worn when working around the fuel system and the cleaning chemicals. The can of cleaner has 100 psi internal pressure, so proper handling must be followed to ensure safety.
^ Before disconnecting any fuel lines or cleaning tool fittings, make sure the pressure is released. To release the pressure:
1. Remove the fuel pump fuse
2. Start the engine and let it run until it stops
3. Crank the engine a few times to completely release all pressure
^ When disconnecting fuel line or cleaning tool fittings, hold a shop rag around the fitting to catch any residual fuel/cleaner.
^ Make sure the fuel pump fuse is removed during the tire injector cleaning process and be sure to plug the fuel supply line after it is removed from the fuel rail.
^ Do not allow the fuel injector cleaner to come in contact with painted or plastic surfaces as permanent damage can result.
^ It is important during cleaning that you clamp closed the fuel return hose (i.e., the hose leading from the vehicle's fuel rail regulator) as close as possible to the fuel rail. This prevents cleaning fluid from flowing to the fuel tank. Introducing cleaning chemical into the fuel tank may harm internal components of the tank. Clamping the fuel return hose closed will be covered later in the procedure.
PARTS INFORMATION
CLAIMS INFORMATION