DO NOT EXCEED 14 lbs. (6) Reinstall each of the 4 coil packs and pressing the stems down onto the plugs. Next go back to your 1/4" ratchet and 10mm socket to tighten all of the 10mm Hex bolts until the coils are snug and secure back in place. (8) Repeat steps 1-7 for the driver side. Overview Review Inventory Features +90 60 Owner Reviews 3.5 / 5 Reliability 18 mpg Combined MPG $205 /mo Cost to Drive Used Grand Cherokee for sale Not available nearby See Cars for Online 447 posts · Joined 2013. #11 · Feb 21, 2014. That is exactly what the oil cooler is.. its a stacked silver square cooler about the size of a small lunchbox. Engine- AFE Intake, Moe's 87mm TB, BT CatchCan. Exhaust- Magnaflow 11385 Xpipe in the center and 2x Magnaflow 14814's in the rear. Wheels- 20x9 SRT8 Reps. Spark plug installation torque for the 5.7 engine is listed at 18.5 to 22 lbs/ft. The 6.4 L engine has a note saying the plugs are a torque critical tapered design with a note not to exceed 15 lbs/ft., but there is no such note for the 5.7L engine. Incidentally, the coil mounting bolts show a torque spec of 9 lbs/ft. Jeep Grand Cherokee & Commander Forums. 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6 2017 Jeep Grand Cherokee Summit 4x4, 5.7 Hemi & 2017 SRT 6 1 Answer. Sorted by: 0. Double check your hose and clamp .It might tee off to the heater on your vehcile .It does on our chrysler 300c .The tee is made of rubbishy plastic and does crack .Result is coolant loss which the temp guage only temperorly responds to .ie it goes up and then down because there is no water to sense anymore .For me and 816 posts · Joined 2009. #1 · Nov 11, 2010. Over the last few weeks I have noticed a raw gas smell coming from the Jeep. I smell it when entering and exiting the Jeep. I looked under the hood last night and could smell gas the strongest on the passenger side around the firewall. Over the last 1500 miles it has used a quart of oil but never 1500 posts · Joined 2011. #2 · Oct 23, 2016. I had to do half the job of removing the alternator to replace my EGR. it wasn't too difficult. Just time consuming. I'd say an hour or two to replace. 18' WK2 Trailhawk, HEMI 5.7, QD II, OME HD, 275/65/18 KO2. optdoug Discussion starter. 585 posts · Joined 2006. 2012 Jeep Grand Cherokee 4x4 5.7 Litre V8 Engine Motor Hemi (VVT) 12 Mopar MDS The engine is in good working order it was removed from a truck that only had 17,000miles on " Read more WK- Grand Cherokee (2005-2010) 2007 Grand Cherokee Limited HEMI Also 05 5.7 Magnum modded the same as Jeep and, Recently Sold, 06 300CSRT8, Comp. Cam, 85 mm 0zxuv.