Spark Plugs differences

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JonathanR
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Spark Plugs differences

Post by JonathanR »

Hi peeps long time no posty but lots of travel Image
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
JonathanImage


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1991 Auto Sleeper Trident High Top
Water Cooled 1.9 Petrol

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Cobra88
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Re: Spark Plugs differences

Post by Cobra88 »

Three electrodes just longer service interval

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

Thats how i understand it
____________________________________________
84 CaravelleGL 1.9 DG WBX Bronze Beige Metallic auto

JonathanR
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Re: Spark Plugs differences

Post by 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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1991 Auto Sleeper Trident High Top
Water Cooled 1.9 Petrol

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Cobra88
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Re: Spark Plugs differences

Post by 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 :oops:

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
____________________________________________
84 CaravelleGL 1.9 DG WBX Bronze Beige Metallic auto

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