Campaign - Fuel Injection System Warranty Extension: Overview
TSB SB02-02-S002Sequential Central Port Fuel Injector (SCPI) Warranty Extension for California Vehicles
ISSUE DATE: APRIL, 2002
Affected Vehicles
1997-2000 Hombre (TH) with 4.3L V-6 engines that are currently registered in California Only with California Emissions.
Service Information
Condition:
Some owners of 1997-2000 Hombre (TH) models, that are registered in California, equipped with 4.3L V6 engines, may experience a "Service Engine Soon" light, misfire, rough idle or hard start due to a deposit build-up on the Sequential Central Port Fuel Injector (SCPI) poppet valve(s). The deposit build-up may cause injector poppets to stick closed. Fuels used in California have been found to interact with the SCPI system to cause the deposits.
Possible Cause:
A deposit build-up on the CSFI poppet valve ball and/or seat may cause the poppet ball to stick open or closed. In either case, the specific cylinder will be mis-fueled resulting in a cylinder mis-fire condition.
Correction:
To correct this condition, follow the procedures in this Technical Service Bulletin for cleaning and servicing injector(s) to restore poppet valves to an "as new condition". Injector replacement should NOT be considered as a correction for this customer concern.
The first step in this process is to make sure that the poppets are operational. The cleaning procedure will be ineffective on a poppet nozzle that is stuck closed. The J44466-10 Pressure Regulator/Hose Assembly attached to a nitrogen tank, should provide the required high pressure (150 psi) source to perform the unsticking procedure.
The J39021 Fuel Injector Tester and accessories provide the means to "energize" the injector. Some later model year vehicles may utilize the Tech 2 to "energize" the injectors.
The second step of this process is to run the engine on a solution of 5% Top Engine Cleaner and 95% gasoline. This will effectively clean any deposits from the ball and seats of the poppets.
IMPORTANT:
It is very important that the engine fuel system is separated from the vehicle fuel system. Top Engine Cleaner may have detrimental effects on the fuel pump.
Repair Time Requirements
According to the terms of the agreement American Isuzu Motors Inc and the dealer have 45 days from the date the customer first brings the vehicle in to resolve the customers claim for repair under this warranty. If you decide to refuse a customers claim for repair under this warranty
because you suspect accidental damage, tampering, or lack of proper maintenance, notify the National Owner Relations Department immediately at 1-800-255-6727. This will allow us to thoroughly investigate the customers claim within the 45 day timeline.
Owner Notification
American Isuzu Motors Inc (AIMI) will send the initial notification letter to the owners of affected vehicles notifying them of the terms of the warranty extension (See Copy). The initial letter will be mailed out on March 19, 2002.
Parts Information
Tools Information
Warranty Claim Information
Warranty Extension Information
This warranty extension covers the SCPI failure condition described above for a period often (10) years or 100,000 miles, whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.
The repairs will be made at no charge to the owner. This warranty extension applies ONLY to repairs requiring SCPI system servicing and/or injector cleaning of the SCPI system. The customer should not be charged for performing a system check when it is determined that the SCPI system is not the cause of a customer complaint. Any additional necessary diagnosis and repairs that are not related to the SCPI condition are not covered by the warranty extension. The customer should be informed that any further service that is not covered by new vehicle warranty will not be covered by the warranty extension.
Repair Time Requirements
According to the terms of the agreement, American Isuzu Motors Inc and the dealer have 45 days from the date the customer first brings the vehicle in to resolve the customers claim for repair under this warranty. If you decide to refuse a customers claim for repair under this warranty because you suspect accidental damage, tampering, or lack of proper maintenance, notify the National Owner Relations Department immediately at 1-800-255-6727. This will allow us to thoroughly investigate the customers claim within the 45 day timeline.
Reimbursement
Customers from the State of California must submit requests for reimbursement directly to American Isuzu Motors Inc, per instructions in the owner letter.
These customer requests for reimbursement are for any previously paid repairs to, or replacement of, the Sequential Central Port Fuel Injection (SCPI) system. Repairs must have occurred within 10 years of the date the vehicle was originally placed in service, or 100,000 miles (whichever occurs first). The requests are to be submitted within two (2) years of the date on which the repair was paid.
When a customer requests reimbursement, they must provide the following:
^ Proof of ownership at time of repair.
^ Original paid receipt or invoices confirming the amount of un-reimbursed repair expense(s), a description of the repair, the date repaired, and the person or entity performing the repair.