Fulltext TSBs

Technical Service Bulletins

TSB
05-16-6
  • MISFIRE, LACK OF POWER, SMOKE, SLOW CRANK IN COLD WEATHER ON INITIAL START UP – 6.0L ENGINE
Publication Date: August 2, 2005

FORD:
2003-2005 Excursion
2003-2006 F-Super Duty
2004-2006 E-Series, F-650, F-750

ISSUE:

Some 6.0L equipped 2003-2006 F-Super Duty, 2003-2005 Excursion, 2004-2006 F-650/750 and E-Series vehicles may exhibit a misfire, lack of power, smoke, or slow crank in cold weather on initial start up. This may be due to the oil viscosity being too high. The use of high viscosity multi-grade oil can slow cranking speed more than 30% at -20 F (-29 C), resulting in longer crank times. High viscosity multi-grade oil may delay fuel injection timing by slowing reaction of high-pressure oil control system integral to each injector.

ACTION:

Refer to the oil viscosity chart provided in this TSB. It has been updated and is recommended for all 6.0L DI Diesel model years. Apply the vehicle operating conditions to the oil viscosity chart and select the appropriate viscosity oil grade. Use Motorcraft or equivalent oil conforming to Ford specification WSS-M2C171-D or API service categories CI-4 PLUS, CI-4/SL or DHD-1. If CI-4 PLUS oil is not available, CH-4 is acceptable.

NOTE:ALSO INCLUDED IN THE CHART IS CLARIFICATION OF THE RECOMMENDED OIL VISCOSITY GRADE TO USE WHEN TOWING A TRAILER.




Figure 1 – Article 05-16-6

WARRANTY STATUS:

Information Only – Not Warrantable


NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company’s on-line technical resources.

Copyright 2005 Ford Motor Company