I`m getting ready to install new Champion Double Platinum spark plugs looking for better performance and fuel economy.. When I removed one to check existing plug I was puzzled by the coil pack? I just loosened the 10mm bolt as far as could and pulled the coil pack up and out.. Is this correct procedure?
what kind of configuration would allow this? please advise Mike
I`m referring to my 2012 Jeep Liberty 3.7

Take those plugs back and get the correct copper core plugs.You will not get any benifit from platinums in the 3.7 and in most cases actually causes problems like misfires and poor performance and mpg's.

Sounds correct to me.

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2008 Black Jeep Liberty Sport
4.7L throttle body
Old Man Emu lift
Sky Slider
Hypertech Max Energy
K&N CAI
Gibson stainless steel exhaust
Blacked out
ScanGauge2
BFG All Terrrain 225/75/16
JBA upper control arms

I installed NGK platinum in my 2006 liberty a year ago and experience excellent performance and fuel economy..

I doubt that or not near where the correct copper core plugs would have done.

Whats a good copper plug?

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2002 KJ Limited 3.7, 5.25" lift via coilovers, custom HD rear springs, 32.2" tires on moabs (soon 33s) 4.56/JBA diff, OX lockers front/rear, NP241OR, Parker Fab front/rear bumpers, rock rails and roof rack, Viair OBA.

2006 KJ sport 3.7, 4" Ironman lift, 32" tires, Parker Fab front/rear bumpers and rock rails.

Champion coppers,part #439.