F 350 2WD Pickup V8-7.3L DSL (1988)
^
Check for Fuel Quality
^
Fuel Supply System
^
Check Fuel Return Line Pressure
^
Air Intake Restriction
^
Check Injection Pump Transfer Pressure
^
Low Idle (RPM)
^
Injection Pump Timing - Setting and Advance Checks
NOTE:
IF REPAIRS WERE MADE AS A RESULT OF THE ABOVE TESTS, DRIVE THE TRUCK BEFORE GOING TO THE NEXT STEP.
3. Replace the fuel injection pump and set the timing according to FPS-8512-A or B. Refer to the 1988/89 Light Truck Shop Manual, Vol A, Section
22-08 for service details. Refer to the Parts Block for correct parts usage.
NOTE:
ONLY USE THE FUEL INJECTION PUMPS SHOWN IN THE PARTS BLOCK.
4. Record "Fuel Injection Pump replaced per TSB article 90-9-8 on both the warranty claim and the Engine Performance Chart comment line.
NOTE: WARRANTY CLAIMS FOR THE INJECTION PUMP WILL NOT BE ACCEPTED UNLESS ALL TAMPER RESISTANT SEALS ARE
INTACT AND THE COMPLETED ENGINE PERFORMANCE CHART IS SUBMITTED WITH THE RETURNED FUEL INJECTION
PUMP.
NOTE: REFER TO THE SERVICE LABOR TIME STANDARDS MANUAL FOR ENGINE PERFORMANCE TEST - DIAGNOSTIC LABOR
OPERATIONS.
PART NUMBER
PART NAME
CLASS
FOTZ-9A543-C
Fuel Injection Pump - Low B
Altitude, 50 State
FOTZ-9A543-D
Fuel Injection Pump - High
C
Altitude
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS:
Eligible Under Basic Warranty Coverage, Powertrain Warranty Coverage
OPERATION
DESCRIPTION
TIME
900908A
Install Fuel Injection Pump
2.2 Hr.
DEALER CODING
BASIC PART NO. CONDITION CODE
9A543
09
OASIS CODES:
630200, 632000
Technical Service Bulletin # 9098
Date: 900427
Engine - Bucking and Jerking During Deceleration
BUCKS/JERKS - DURING DECELERATION - 7.3L DIESEL ENGINE WITH M50D TRANSMISSION
Article No. 90-9-8
LIGHT TRUCK:
1988-89 F-250, F-350
ISSUE:
Bucking and jerking, sometimes called "trailer hitching" during decel may be caused by the fuel injection pump. The fuel injection pump may
not maintain a constant flow of fuel to the injector nozzles. This concern is most noticeable while driving down a long downhill grade during
decel.
ACTION:
Use the following diagnostic procedure to determine if a new fuel injection pump is required.
Follow the ENGINE PERFORMANCE CHART - 7.3L - DIESEL ENGINE DIAGNOSTIC GUIDE (FPS-8512-A or B). Complete the steps listed to
determine if replacement of the fuel pump is required. Make sure the truck is running acceptably before peforming this procedure.
1. Complete all of the following information requested at the top of the ENGINE PERFORMANCE CHART:
