[Gorden]

I know my gap should be .040 according to the internet but under the hood, the factory sticker says 1.020. That CAN'T be right. I'm going to go with .040 but does anyone know why the factory sticker says 1.020 and should I ignore it as planned?

Also, Any tips from anyone who gapped their 4.7 differently and noticed better fuel or performance?

I appreciate any replies. New member and first post.

 

[jtec]

thats likely 1.020 mm.

 

[cmotsvt]

thats likely 1.020 mm.

Yeah pry not inches.

 

[Gorden]

thats likely 1.020 mm.

Yes, I know it's mm but that seems like it's too much. The old plugs were around .040 mm, so....

 

[jtec]

from OEM 2000 jeep WJ manual... just do .040 in gap.

 

[Gorden]

from OEM 2000 jeep WJ manual... just do .040 in gap.

View attachment 4156329

LOL, Thank you. I had it so wrong. .040 is for inches, not mm. Egg on my face.

 

[cmotsvt]

It happens. I call them senior moments.