1999 5.4 sounds like a diesel

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Old May 15, 2006 | 12:36 PM
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dnk5774's Avatar
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1999 5.4 sounds like a diesel

Hey guys, I have a 1999 F-150 5.4, it sounds like a diesel all of the sudden. I took off the drive belt to eliminate any pullt issues, I also cheked for exhaust leaks but none. anyone have any ideas? Motor, Tranny? Thaks
 
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Old May 15, 2006 | 12:53 PM
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That's usually the engine detonating.

If you're stock, I would *guess* bad plugs, bad gas, or a hosed EGR system. Since it started all of a sudden, maybe the EGR system is the place to start looking. Good luck with it!





Originally Posted by dnk5774
Hey guys, I have a 1999 F-150 5.4, it sounds like a diesel all of the sudden. I took off the drive belt to eliminate any pullt issues, I also cheked for exhaust leaks but none. anyone have any ideas? Motor, Tranny? Thaks
 
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Old May 16, 2006 | 07:06 AM
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explanation of detonating?

Thanks for the feed back, but can you explain detonating? Thanks
 
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Old May 16, 2006 | 12:50 PM
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Originally Posted by dnk5774
Thanks for the feed back, but can you explain detonating? Thanks

nad fuel. dirty fuel filter. injectors dirty.. also 5.4's are known for timing chain noise.
 
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