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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.

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