Cetane Posted March 30, 2010 Share Posted March 30, 2010 No comments about today's broadcast messages? 3333 - 2011 F- SUPER DUTY - 6.7L DIESEL - TICK/TAP NOISE AT IDLE SOME 6.7L DIESEL EQUIPPED VEHICLES MAY EXHIBIT A 'TICK/TAP' OR 'TYPEWRITER' TYPE NOISE AT IDLE THAT MAY BE ISOLATED TO THE MAIN ENGINE BEARING AREA. THIS NOISE SHOULD BE CONSIDERED 'CHARACTERISTIC' AS IT IS NOT DETRIMENTAL TO ENGINE DURABILITY. 6.7L DIESEL ENGINES INCLUDE DESIGN IMPROVEMENTS TO REDUCE OVERALL INHERENT DIESEL ENGINE NOISE. THESE SOUND REDUCTION IMPROVEMENTS ENABLE CERTAIN CHARACTERISTIC NOISES TO BE MORE EASILY HEARD. USING THE INCORRECT ENGINE OILS FOR THE VEHICLES OPERATING CONDITIONS CAN NEGATIVELY IMPACT THE LEVEL OF NOISE EXPERIENCED. REFER TO VEHICLE OWNER GUIDES AND MAINTENANCE GUIDES FOR APPROVED ENGINE OIL VISCOSITIES AND USAGE INFORMATION. CUSTOMERS SHOULD BE INFORMED THAT THESE CONDITIONS DO NOT AFFECT ENGINE DURABILITY AND NO REPAIRS ARE NECESSARY. 3332 - 2011 F-SUPER DUTY - 6.7L TURBO NOISE CHARACTERISTICS SOME CUSTOMERS WITH 2011 6.7L DIESEL EQUIPPED F-SUPER DUTY VEHICLES MAY NOTICE A CHARACTERISTIC TURBO SPOOL-DOWN (HOOT) NOISE ON ENGINE THROTTLE TIP-OUT WHEN THE ENGINE OIL TEMPERATURE (EOT) IS BELOW 100F (38C) AND/OR A TURBO DROAN AT IDLE WHEN EOT IS BELOW 50F (10C). 6.7L DIESEL ENGINES INCLUDE IMPROVEMENTS DESIGNED TO REDUCE OVERALL INHERENT DIESEL ENGINE NOISE. SOUND REDUCTION IMPROVEMENTS WILL ENABLE CERTAIN CHARACTERISTIC NOISES TO BE MORE EASILY HEARD. USING THE INCORRECT ENGINE OILS FOR THE VEHICLES OPERATING CONDITIONS CAN NEGATIVELY IMPACT THE LEVEL OF NOISE EXPERIENCED. REFER TO THE VEHICLES OWNER/MAINTENANCE GUIDES FOR PROPER ENGINE OIL USAGE INFORMATION. CUSTOMERS SHOULD BE INFORMED THAT THESE CONDITIONS DO NOT AFFECT ENGINE DURABILITY AND SHOULD BE CONSIDERED CHARACTERISTIC AND NO REPAIRS ARE NECESSARY. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 30, 2010 Share Posted March 30, 2010 I check in the morning... these must have been posted later in the day. Don't you find it ironic that the quieter these engines get the more noises we discover! Quote Link to comment Share on other sites More sharing options...
Adam_Dodson Posted March 30, 2010 Share Posted March 30, 2010 they made it too quiet! Quote Link to comment Share on other sites More sharing options...
Aaron Posted March 30, 2010 Share Posted March 30, 2010 I personally didn't find the 6.7 we had at school a great deal quieter than my 6.4 at idle. MARGINALLY quieter at higher RPM, but not by much, in my opinion. Quote Link to comment Share on other sites More sharing options...
Shlep Posted March 31, 2010 Share Posted March 31, 2010 I've got to agree with Aaron on that, I didn't notice much,if any, difference between the two engines running. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 31, 2010 Share Posted March 31, 2010 I agree too and that exact though crossed my mind as we ran the engine. I didn't get to drive it though. Quote Link to comment Share on other sites More sharing options...
Aaron Posted April 2, 2010 Share Posted April 2, 2010 We didn't get a road test, either. I will say this though, now that I got the door panel rattle fixed in my truck, I had really forgotten how quiet that 6.4 really is. Quote Link to comment Share on other sites More sharing options...
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