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Valve train noise on idle down.

jebadiah04

Rooster Snorkler
849
27
Gents my 5.4 has been getting some funky valve train noise coming and going.

Ive noticed the most when im cruising the woods at slightly over idle. Then when i drop to idle i get what sounds like nasty valvle noise (like its totally out of oil) then a half second later it stops and sounds normal. Oil pressure is real good on the gauge and it only does it occasionally but enough to .make me wondering about it.

Ideas?
 

O'Rattlecan

Redneck Prognosticator
26,687
797
Belton, MO
Is this the typical cam phaser noise, or is it noise above and beyond the diesel-like ticking?

The symptoms are typically the ticking at low rpm when the engine is warm.

Ryan
 

jebadiah04

Rooster Snorkler
849
27
Way more than typical tick.


Ive always used mc filters but i cannot vouch for the previous owner. Im feeling like its possibly timing chain rattle? Like maybe my tensioner is backing off.
 

blacksnapon

Moderator
Staff member
we were getting them after extended use of "brand x" filters the oil passages in the heads were plugged with small silicone chunks from the valving in the filters.
 

jebadiah04

Rooster Snorkler
849
27
having to pull heads to diagnose or?
 

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