Fulltext TSBs

Technical Service Bulletins

TSB
03-21-31
  • ROUGH IDLE – INJECTOR BORE SCUFFING DURING ENGINE BREAK-IN PERIOD – SERVICE TIP
Publication Date: October 6, 2003

FORD:
1994-1997 F-250 HD
1994-1998 F-350
1995-1998 ECONOLINE
1999 F-250 HD, SUPER DUTY F SERIES

Article 98-20-5 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet.

ISSUE:

Some 7.3L DIT engines exhibit rough idle and engine miss due to injector bore scuffing at green engine break-in. This may be due to insufficient lubricity additive in some fuels.

ACTION:

For injectors serviced in the field, one bottle (12 ounce) of Diesel Fuel Lubricity Additive (F8AZ-9C077-AA) must be added to the engine fuel tank at the time of injector replacement. The additive has been shown to be effective in preventing premature wear during the injector break-in period.


PART NUMBERPART NAME
F8AZ-9C077-AADiesel Fuel Lubricity Additive

OTHER APPLICABLE ARTICLES:

NONE

SUPERSEDES:

98-20-5

WARRANTY STATUS:

Information Only