SOHC noise at startup?

[redneck15431]

When I first start up my 04 4.0, sometimes I hear what sounds like lifters clicking for a brief half second or whatever. I think it may be just the engine building up oil pressure, but I do know the SOHC engines had a problem with timing chain tensioners that supposedly ended around 02. Just curious to see if any of you guys experience anything similar.

 

[gw33gp]

You may be experiencing low oil pressure at start up. If you use a Motorcraft oil filter, it will not allow the oil to drain back and the oil pressure will build up quicker. It has an anti-drain valve that many filter do not have.

I have also heard many different engines do this and think it may be something in the emissions control that is doing it. I have no specific reason to think that; it is just a suspicion.