Omega Owners Forum

Chat Area => General Car Chat => Topic started by: Andy B on 28 June 2020, 00:46:13

Title: indexing spark plugs
Post by: Andy B on 28 June 2020, 00:46:13

Who's ever heard of indexing spark plugs?  ??? ???

https://mbworld.org/forums/attachments/w212-amg/425444d1591916211-e63-amg-showcase-m278-engine-instrument-cluster-226-278-157-spark-plug-indexing.pdf

Title: Re: indexing spark plugs
Post by: Doctor Gollum on 28 June 2020, 01:00:40

Hadn't specifically heard of it before, but there's a logic to it... Remember when previously discussing the pros and cons of quad electrode plugs and lpg... The argument being thst the extra electrodes shielded the spark affecting the ignition ;)

Another reason not to buy a direct injection car :-\

Title: Re: indexing spark plugs
Post by: Nick W on 28 June 2020, 12:14:05

Used to be common on tuned engines with weedy distributor based ignition systems. High power, mapped ignition engine management has dramatically reduced the need for doing it in all but the most critical cases