I respectfully disagree, (partially). The manual clearly states that the ECU converts and amplifies signals from the pulse coil in the dizzy and sends them to the coil. I do think I understand what you're saying though. The ECU switches ground on and off to the coil, allowing the magnetic field to build and collapse as needed to the high voltages necessary to fire a spark plug. I'm still waiting to hear from anyone who's had good results with the Bosch 18Kv coil. :) As far as checking my plugs goes...I've ordered a new set anyway so I'll be checking them when I replace them this week. Rich A. --- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> wrote: > ECU doesn't "send signals" to the coil. All it does is remove the > ground, allowing coil to build up a charge (White/Slate current goes > from the coil to the ECU, not the other way 'round). To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/