Can't figure out noise

[Thegeb2909]

If anyone can help me, I have noticed the last few times I start my 07 Ford Expedition xlt that there is a strange noise. When I start the truck when its cold, right after it starts there is a rattle nosie for a sec then it's gone, and after I drive and then vehicle is warm it doesnt make that noise when I start it. Anyone have any ideas on what it could be??

Thank you

 

[tmajikman]

It is normal, when all the oil is in the pan at sart up you can sometimes hear the valve train rattle, especially when it is cold, when the oil starts pumping into the engine and oils your valve train the rattle goes away, you could always try zmax or something like that to lesson the noise at start up.

 

[JUST4FUN]

What oil filter are you useing? i gave up on fram along time ago there anti drain back valve is made from cardboard and is junk. get the ome make sure your useing 5w20 oil

Fram
These filters are manufactured by Allied Signal, Inc. See this email from an Al
Fram Extra Guard PH8A
This filter cartridge has a small outside diameter with a rather low filter element surface area (193 sqin), and features cardboard end caps that are glued in place. The rubber anti-drainback valve seals the rough metal backplate to the cardboard end cap and easily leaks, causing dirty oil to drain back into the pan. If you have a noisy valve train at startup, this filter is likely the cause. The bypass valves are plastic and are sometimes not molded correctly, which allows them to leak. The backplate has smaller and fewer oil inlet holes, which may restrict flow.
The telltale signs for a Fram Extra Guard are: It has 8 small holes for the oil inlet and a thin, cheap looking backplate.



oil filter study http://people.msoe.edu/~yoderw/oilfilterstudy/oilfilterstudy.html