[78F350]

Originally Posted by theiceman

I also read that new plugs and reused plugs are to be tightened to different values. If eusing plug you tighten to 18.5 foot lbs vs new at 22. , problem is i have read so much recently i cant remember where i saw it .

Can anyone confirm? when i did the valve covers i went to check a plug and it was barely finger tight but looked in great shape so just want to re tighten.

Correct.
One of my cars recently had one plug that was squeaking on start up, but otherwise ran fine. When I checked, #2 plug was barely finger tight. I use anti-seize on the plugs and I expect that if the torque is a little low when they are installed, they will loosen over time.

The Factory Manual (updated as of 2004) pg 03--1.6 says 30 Nm/22 Ftlb new and 25 Nm/18.5 Ftlb used.