I have a 2007 4.6 3 valve. I took it to the dealer because it was making a bit of a tapping noise when it's fully warmed up. It's been doing this for a LONG time but I wasn't sure if I was hearing it right, so I finally took it in. Ford looked at it and they say that one of the oil jets that brings oil to the top end of the engine is partially plugged so it isn't getting enough oil to that spot. They say the rest of the jets on that side of the engine are fine and even that one isn't fully plugged but that spot is not getting enough oil. It is not covered under the powertrain warranty because that only covers parts that actually break apparently. Their fix for it is to take apart the top end, clean that jet and put it back together. Since nothing is broken and cleaning it is according to them a maintenance, not a repair, it isn't covered.
Do you guys think that sounds fair or not? Since they aren't covering it under warranty, they would charge about $600 to do it. I don't have that. How hard do you guys think it would be to do it myself. They said they'd basically use brake cleaner to clean it, which is simple enough. It would just be a matter of taking it apart.
I'm open to opinions.