Spark Plugs differences

[JonathanR]

Hi peeps long time no posty but lots of travel
Just got through its MOT with no advisories and now doing some minor servicing fitting new plugs and leads before he goes to the seaside.

Ones I have taken off have 3 electrodes around the centre electrode whereas I am replacing with what I see as a more traditional single electrode type. I’m assuming I’ve got the right replacement plugs?

Are the 3 electrode ones better or just different.

It’s a water cooled 1900cc engine.

Thanks
Jonathan


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[Cobra88]

Three electrodes just longer service interval

Green label coil single electrode plugs
Grey label coil multi electrode plugs

Thats how i understand it

[JonathanR]

Thanks. Although I’ve been running 3 electrode plugs on a green stickered coil for several years. Is that an oops.
I note Haynes has different plug gaps for green and grey. Also different plug references.


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[Cobra88]

Hi Jonathan

I don't think its that critical as my DG came with green coil and multi plugs and ran perfectly.

I'm still running the wrong plugs (BP6ET) with zero problems

my main problem is about 5 different websites/guides show different plugs and the original Bosch plug listed in my handbook is NLA
so I stuck with the NGK