Attached are the oem instructions for the upper intake removal, coils and spark plugs I used the owners manual as my reference for the spark plug gap which indicates.031 gap Looks like a lot but it really is not that bad
Top 16 Spark Plugs for Every Jeep - Buyer’s Guide 2026
Confirm the engine code before buying plugs or setting the gap
The passenger side plugs were easy to get to, but had to remove the upper portion of the intake manifold to get to the driver side bank
After completing an application search and selecting a spark plug, the “vehicle information” section on the product detail page should display the proper gap. Learn how to find spark plug gap for my car Easy steps to check, adjust, and improve engine performance while saving on costly repairs. Large spark plug gap setting demands higher voltage (electrical pressure) for spark to jump the large distance gap
That means that there is higher voltage build up. What does gapping and indexing mean for you Check out this article to learn more about spark plug gap tolerances and indexing for race applications. I'm near finished with my 60k mile service
Spark plugs are the only thing left on my list
I'm going to be installing ngk v power zfr6f11g I'm getting multiple people telling me different gaps On the hood i see the spark plug gap as 0.040 I've had cars and trucks that perform better at gaps much different than the recomended gap setting
The incorrect plug gap for your engine can contribute to a high rate of misfires, loss of power, plug fouling, poor fuel economy and accelerated plug wear Has anybody had this issue I pulled spark plug 3 No codes set but jscan was logging misfires (more then the other cylinders) the spark plug gap was.
A properly gapped spark plug is necessary for a properly functioning engine
The gap size affects the spark plug's firing temperature, which has a direct relationship to the combustion of fuel and air in the engine I recently replaced my spark plugs at 90k on my 2011 3.6
