Econoline E350 1 Ton V8-7.3L DSL Turbo VIN F (1998)
Fuel Injector O-Ring: All Technical Service Bulletins
Diesel Engine - Hesitates/Stalls/Lack of Power/Stumbles
Article No.
98-23-13
11/23/98
^
HESITATION/STUMBLE - POOR SEAL ON
INJECTOR O-RINGS - 7.3L DI TURBO
^
IDLE - ROUGH - POOR SEAL ON INJECTOR
O-RINGS - 7.3L DI TURBO
LACK OF POWER/POOR PERFORMANCE - POOR
SEAL ON INJECTOR O-RINGS - 7.3L DI TURBO
^
STALLS - POOR SEAL ON INJECTOR 0-RINGS -
7.3L DI TURBO
^
OIL - EXCESSIVE OIL CONSUMPTION - POOR SEAL
ON INJECTOR O-RINGS - 7.3L DI TURBO
LIGHT TRUCK:
1994-97 F SUPER DUTY
1994-98 F-250 HD, F-350
1995-98 ECONOLINE
This TSB article is being republished in its entirety to include vehicles through the 1998 model year.
ISSUE
On vehicles with a 7.3L direct injection (DI) turbo diesel engine, one or more of the following concerns may be present:
^
Rough Idle
^
Stalling
^
Hesitation/Stumble
^
Loss/Lack of Power
^
Poor Fuel Economy
^
Excessive Oil Consumption
These concerns may be caused by the injector cushion 0-rings deteriorating, resulting in a poor seal. This condition cannot be detected with conventional
diagnostics (i.e. it will not produce diagnostic codes with either Super Star or New Generation Star Testers).
ACTION
Remove the injectors, check for deterioration of the cushion 0-ring. If necessary, replace the 0-ring with a new 0-ring which has a more robust design and
should not deteriorate under severe conditions. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
1.
If no Diagnostic Trouble Codes (DTCs) are found and normal diagnostics do not lead to a solution, remove the injectors according to the DI
Turbo Service Manual.
2.
Check for wear or deterioration of the cushion 0-ring. If excessive wear is found, replace the 0-ring with a new blue 0-ring found in the 0-ring kit
(F8TZ-9229-AA). Refer to the Instruction Sheet included in the kit.
NOTE
IF ONE 0-RING IS REPLACED ALL 0-RINGS AND SEALS MUST BE REPLACED. IF ONE INJECTOR SEAL IS SERVICED ALL THE
INJECTOR 0-RINGS AND SEALS MUST BE SERVICED.
The 0-ring Kit includes the following:
