David, Your correct. Once the reluctor ( magnetic ) senses one turn from the point /rotor in the distributor it send the signal to the 555 chip to turn on the pump were starting the car. John Hervey www.specialtauto.com -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of bitsyncmater Sent: Friday, February 08, 2008 11:51 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: Warm Start Issue (David McKeen) I have to disagree that the pump will not run while cranking the engine. If it didn't you could never start the engine after it lost rest pressure. If you think you can....remove the RPM relay and try to start the engine. It can't get fuel. --- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@...> wrote: > > Because the pump isn't spinning for 1.5 seconds. The pump spins for a > fraction of a second when the car is first energized, but until the > engine is running that's it. The pump does not spin as the starter > motor is turning the engine. 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 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/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> 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/