The crankcase is meant to be kept under a negative pressure. If you don't then you may have all kinds of oil leaks. I would try to leave some provision for keeping the crankcase under negative pressure. Maybe a PCV valve. Or a metering orifice as it now has. YOu should also have some kind of backfire preventer. It can be as simple as a small can with some steel wool inside. You do not require a vapor canister but you do have to allow for venting of the fuel tank. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, nicholden@xxxx wrote: > > > While we are on the subject i have a few questions regarding the on- > going EFI installation. It is in regerds to the brass tube which is > connected in the centre of the valley and then up to supply the oil > cap / engine crankcase with vaccumm and various other things etc. > Now the fuel rails are in the way i must modify this tube somehow. > What apart from crankcase vaccum what else does this supply vaccum > to? > On the oil cap there is a small connection (for crankcase vaccum) and > 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/