Confused about spark plug gap requirements for my 3.7! .040? Input, please.
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! The catalyst says .040 but everyone else is saying other gaps, such as: 0.42, 0.43 and the place I bought the plugs said .035!!!
I want this done correctly, so there are no problems such as pinging, knocking or overall poor performance.
If you can help me narrow this down, I really am grateful!
2006 Jeep Grand Cherokee (WK)
3.7 L V6, 4x4 Quadra I, Stone White