spark plug gap

[LEV_101]

i got some spark plugs and the box says " do not adjust spark plug gap due to extremely fine center electrode." what does this mean ? and what does the gap do ? can someone please explain this to me thanks

[ROBODISCO_20v]

The gap is the distance between the the centre electrode and the ground electrode. By the sounds of it you have got iridium plugs as they have an extremly fine centre electrode. Now days you don't have to worry about gapping plugs as the come preset from the factory.
The link below should help you more.
http://www.ngk.com/sparkplug411.asp

[matt dunn]

All i do at work when we fit plugs is pick up the first one and visually compare the gap against the rest of the set. If they are all the same them bang them in.
Just in case one has been dropped while in the box etc.

Matt

[Rob]

I like it. Bang em in I say. If it say don't adjust then don't

[jondee86]

and what does the gap do ?

The spark "jumps" across the gap and ignites the air/fuel mixture
in the combustion chamber. Increasing the width of the gap makes
it more difficult for the spark to jump across, and can lead to
miss-firing under load. The gap tends to "grow" on old plugs as
the metal is eroded away, plus it is harder for a spark to jump
from a rounded edge.

That is why you changes your plugs

Cheers.... jondee86