Gapping Spark Plug

[NKS]

Hi all,

Just purchased a new set of plugs for the G40, Bosch W5DPO.

What is the correct gap for these plugs?

I always left them as they came, but recently saw the light and gapped my Impreza correctly and the difference was noticeable.

Thanks,
Nishi

[hayesey]

they come set right.  I seem to recall 0.6mm being about rghit but I could be wrong.

[NKS]

they come set right.  I seem to recall 0.6mm being about rghit but I could be wrong.

Ah-ok - thanks for the info!

I will check them when I put them in to ensure they are all set to 0.6

[Alexiskayak_7]

Autodata books say 0,8mm for the w5s and 0,6mm for the g60 ones (w6s)

[Dirty Slag]

All plugs normally come gapped at 1mm so for your G you'll need to close it else it might miss under load!