Hello guys. I got my new spark plugs yesterday.(nissan OEM) and on the package says that gup size should be adjusted to manuf req. before installation. So should I adjust them and to what gap size if it's required?
I think that too big gap can affect on fuel economy. Does it?

Thanks in advance Serge

 

Moder's u can delete this thread if u want i found answer in manual.
The Gap size should be 1.0-1.1mm or (0.039-0.043)in

 

Dammit!!! I want my click back!