Engine - No Start/Hard Start

90ford05

^ HARD START - 6.1L, 7.0L, 7.5L ENGINES - VEHICLES BUILT FROM 1/1/88 TO 9/14/89

^ NO START - 6.1L, 7.0L, 7.5L ENGINES - VEHICLES BUILT FROM 1/1/88 TO 9/14/89

^ CAMSHAFT OR DISTRIBUTOR GEAR FAILURE - 6.1L, 7.0L, 7.5L ENGINES - VEHICLES BUILT FROM 1/1/88 TO 9/14/89

Article No. 90-5-8

LIGHT TRUCK: 1988-89 E-250, E-350, F-250, F-350 1989 F SUPER DUTY

MEDIUM/HEAVY TRUCK: 1988-89 F & B SERIES

This TSB article is being republished in its entirety to increase all of the labor allowances and also add allowances for the F-Super Duty.

ISSUE: No start, hard start, rough idle and lack of power may be caused by a camshaft distributor drive gear that is out of specification. This can cause early camshaft or distributor gear failure at less than 10,000 miles (16,000 kilometers).

ACTION: Install a new camshaft assembly and distributor assembly that are within specification. Refer to the following procedure for service details.

1. Check the camshaft and distributor gear for signs of wear or failure.

2. Replace both the camshaft assembly and distributor assembly if either gear is badly worn or has failed. Refer to the appropriate Truck Shop Manual, Section 21-23 for removal and installation procedures.

CAUTION: DO NOT REPLACE JUST THE DISTRIBUTOR GEAR.

NOTE: ONLY USE SERVICE REPLACEMENT CAMSHAFTS THAT HAVE A GREEN PAINT STRIPE NEAR THE CAMSHAFT DISTRIBUTOR GEAR. DO NOT USE CAMSHAFTS OTHER THAN THOSE DESCRIBED BELOW.

3. Install a new service camshaft assembly (D9HZ-6250-A) for 6.1L and 7.0L engines and (C8SZ-6250-A) for 7.5L engines.

NOTE: ADDITIONAL CAMSHAFT INFORMATION CAN BE OBTAINED BY CALLING THE LIMA ENGINE PLANT HOTLINE AT ONE OF THE FOLLOWING NUMBERS:

^ OHIO DEALERS CALL: 1-800-472-5262

^ OUTSIDE OHIO CALL: 1-800-537-2830

4. Remove the engine oil pan. Refer to the appropriate Truck Shop Manual for service details.

5. Clean the engine oil pan sump.

6. Inspect the front face of the cylinder block (oil pan area. Remove any debris or shavings found by cleaning the area.

7. Inspect the oil pump. If the oil pump is damaged, replace it.

8. Replace the pick-up tube and screen assembly and the tube gasket regardless of the oil pump condition.

9. Re-install the engine oil pan. Refer to the appropriate Truck Shop Manual for service details.

NOTE: BEFORE INSTALLING THE DISTRIBUTOR, THE DISTRIBUTOR DRIVE AND CAMSHAFT GEARS MUST BE LUBRICATED WITH FORD OIL CONDITIONER, (D9AZ-19579-CA). THIS WILL PREVENT A "DRY" INITIAL START-UP.

10. Install a new oil filter and oil.

11. Replace the distributor assembly (-12127-) in all cases. Refer to the Dealer Master Parts Catalog to determine the correct distributor assembly.
PART NUMBER PART NAME CLASS

D9HZ-6250-A Camshaft Assembly BQ
C8SZ-6250-A Camshaft Assembly BG
D9AZ-19579-CA Ford Oil Conditioner B



OTHER APPLICABLE ARTICLES: None
SUPERSEDES: 89-24-8
WARRANTY STATUS: Eligible Under Basic Warranty Coverage, Powertrain Warranty Coverage