I have an 07' f-150 5.4 that has been tapping quite noticeably on the first start of the day for a few minutes until it warms up and then it is quiet.

I am aware the that cam phasers are a issue on these trucks but from what I read they make noise when the truck is warm and not cold.

Could it be the lash adjusters? Is this a normal noise? I understand all the oil drains down overnight but the tapping is a little excessive.

Thank you for any suggestions

 

What brand of oil filter?

 

I have always used MC 5w20 with an fl-820s filter when I first heard the noise I swithced to a mobil one filter but there was no change

 

Should not be a drainback problem, then.

 

that was my first guess too.....lash adjusters? valves? I have read little bits about this problem on other forums but never really got an answer

 

Click on episode 22.

http://www.flatratetech.com/index.php?categoryid=4

If it makes that sound at startup it is the timing chain adjuster. 11:30 in the video.

 

It seemed like the timing chain adjuster in the video only made the noise for a second

would this noise continue for several minutes as a tapping noise until the engine is warm?

 

I recommend watching the whole video then.

 

Stealth can that video be a sticky or whatever you call it?