| Subject: | Correct Solvent For CSFI Poppet Cleaning Procedure |
| Models: | 1996-99 Chevrolet, GMC S/T, M/L, C/K, G, P Models |
| 1996-99 Oldsmobile Bravada |
| with 4.3L, 5.0L or 5.7L Engine (VINs X, W, M, R -- RPOs LF6, L35,
L30, L31) |
| and All Transmission Types |
Some technicians, when servicing 1996 and newer Truck CSFI (Central
Sequential Fuel Injection) fuel systems (ref. Corporate Bulletin 87-65-07A),
may be using an incorrect solvent when attempting to clean CSFI poppet valves.
Important: The ONLY solvent that will have any effect on the deposits occurring
on poppet valves is: "PORT FUEL INJECTOR GASOLINE DETERGENT" (P/N 12345104)
(IN CANADA USE P/N 12345515).
The use of Goodwrench "Fuel Injector Cleaner" (P/N 12346291),
or any other "Fuel Injector Cleaner" is completely non-effective,
and not appropriate for this concern.
Parts Information
Parts are currently available from GMSPO.
