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Hi, my name is Connor and I own a 2011 cruze eco MT. I just put a cold air intake on and I'm going to change the coil packs and plugs but I am unsure of what spark plugs to buy and about the plug gaping. Any help would be appreciated, thanks.
 

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Welcome to the forum! There's a LOT of information about spark plugs here... but what you're looking for is this or something that will substitute for it: ACDelco Iridium Spark Plug 41-121

This is a forum here that deals specifically with questions like yours. Gen1 1.4L Turbo
 

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Welcome and as stated plugs are not a big discussion here becuase AC Delco 41-121 are seemingly the best for this engine and iridiums last a long time! I would say short of a tune, try running a few tanks of 93 octane and I believe you will notice the difference.
 

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2014 LT program car, Pull Me Over Red, 1.4T Auto
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Hi, my name is Connor and I own a 2011 cruze eco MT. I just put a cold air intake on and I'm going to change the coil packs and plugs but I am unsure of what spark plugs to buy and about the plug gaping. Any help would be appreciated, thanks.
Welcome Aboard!(y)


Tips to ensure no misfires occur:

Remove the coil pack. If the boots are stuck on, use a small screwdriver or pick with some dielectric grease on it to go around the outside of the boot and then possibly the inside of the boot to help aid in removal.

Remember to (p)re-gap your plugs to .028, (0.24 if tuned)

Set gap with the black portion of this tool.



To increase the gap size bend the ground strap up to the desired height. DO NOT LET THE GAPPING TOOL TOUCH THE IRIDIUM CENTER ELECTRODE OR PORCELAIN.

Measure the gap with feeler gauges.



Throw this away.





Torque to 18 ft-lbs with no anti-seize on the threads of a stock type plug.

Ensure the boots have no rips/tears or holes in them, lightly coat them with dielectric/silicone grease and make sure the resister springs are clean and not caught up in the boots when you install them.

If the plugs look bad, consider these:

-BKR8EIX-2668 (iridium plugs), ~$25, expect ~10-15k regaps on these, ~40-50k overall life.
-BKR7E-4644 (nickel/copper plugs), ~$8, expect 15-25K out of these plugs, with a regap or two required at 5-8k intervals on stock tune.

Read Hesitation Gone! for more info on the plugs.


A good replacement coil is the MSD Blaster OEM Replacement Coilpack 8236


Don't forget to introduce yourself and your Cruze here.
 
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