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john -aka eauto
john -aka eauto, The Car Guy
Category: Ford
Satisfied Customers: 16309
Experience:  ase tech over 15 years in the field
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On my 2004 F150 with a 5.4L engine I'm hearing what sounds

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On my 2004 F150 with a 5.4L engine I'm hearing what sounds like a ticking/knocking/slapping sound which my mechanic friend said sounds like a lifter but he doesn't do that sort of work. If it is a lifter is there a way to quiet it down? If not, how big of a job is it to repair or replace a lifter as far as time and materials?

is the engine light on? is it coming from the front of the motor?

Customer: replied 29 days ago.
No light or codes. Sounds like maybe from the left valve cover or left side somewhere

usually its a timing chain slap..thats the most common on these...does it go away when warm? does it increase with rpms?

Customer: replied 29 days ago.
Seems to lessen a bit when warm. I'll check to see if it increases with rpms


Customer: replied 29 days ago.
Okay it speeds up with rpms and there's a sound even louder upon starting which is an intermittent slapping sound which seems more on the right side maybe towards the front but not sure. It doesn't sound as bad after a minute and it's not a steady ticking like the other sound

its a over head cam motor generall its a timing chain noise i would use a stethoscope to narrow down or pull the valve covers and inspect for damage...these motors are common for chain and or guide failure when they get some age and miles

Customer: replied 29 days ago.
Okay and what's the hrs and size of job to change the chain and guides?

a lot let me look up labor times give me a few

11 hours

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Customer: replied 28 days ago.
Okay thanks