PCV into the manifold is definitely not optional, otherwise liquid oil will be sucked backwards into the intake (just like a clogged PCV valve). If you don't like the cold start tube/calibrated nipple sticking up you could replace them with a traditional PCV valve into the back of the intake rails for a cleaner installation (is an unused 1/4" threaded port at the bottom of the driver's rail. Turn the oil filler cap around). I'm running a PCV valve into my carburetor with excellent results. Be sure to seal the unused cold start tube port in the manifold to avoid a major vacuum leak. Charcoal canister is of course optional. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> wrote: > > > I think you are refering to the brass pipe that is held to the intake > manifold with 1 bolt and does bend up to a point near the oil > filler/breather. It is the cold-start pipe. The cold start valve sits > on top of it. I guess you won't need the cold start valve although you > could use it and not mess up the EFI. You can just leave it there > wired up the way it was and it should run fine (It only operates when > the motor is cold and cranking anyway). If you do care to remove it > you will have to make some provision for the other 2 connections that > go there. The breather for the crankcase and the port for the charcoal > cannister. These connections are metered, ie, the fittings they > connect to have very small holes so they get only a limited amount of > vacuum. The Delorean does not have a PCV valve like most, the > crankcase is kept under a negative pressure without a valve, instead > it just has a metering hole. > David Teitelbaum > vin 10757 > 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/