Sparkplug gaps

[jonbarrett]

I've got plugs with two earth points either side of the central electrode. Any idea what the gaps should be?

[cerbymad]

Spark plugs should already be gapped by the manufacturer

[GreenV8S]

Same as normal I would guess, unless the plug manufacturer says differently.

Incidentally the only difference between these fancy multi-terminal plugs and plain simple ones that everyone else uses is the service life. I assume you aren't planning to leave those plugs in beyond the normal recommended service interval, so what's the point of the fancy plugs?

[jonbarrett]

These are the plugs that were in the car when I bough it. They will be replaced shortly but I just wanted to tidy them up until then.

[AlVal]

.7mm accordding to denso in their application guide for the cerbera 4.2

edited - missed the decimal :P

Edited by AlVal on Sunday 22 July 18:44

[jonbarrett]

Just cleaned and replaced the existing plugs. It's like driving a different car. Better starting, faster throttle response, less lumpy, no missfire under hard accelleration. I'm going to check the service history because the rust on the plug bodies suggest they have been there a while. I still plan for new plugs, leads and coils but now I've got longer to save.

[GreenV8S]

AlVal said:

7mm accordding to denso in their application guide for the cerbera 4.2

Are you sure about that?

[AlVal]

http://www.globaldenso.com/cgi-bin/global/plug/eur...