You're probably hearing the frequency valve buzzing. If it's noisier than that, you may need to have the exhaust manifold gaskets replaced...this fixed my "bad valve timing" problem that wasn't bad valve timing! -Josh VIN 5102 VIN 15964 VIN 11289 (parts) VIN 10236 (parts) VIN 3951 (parts) spaceace3113 wrote: >Are all the PRV engines in the deloreans so "Chatty" it seems to me >that the upper half of the engine is rather noisy what could that be >attributed to anyway? The car is flawless and Dead Mint with 300 >miles on it recently completely overhauled by PJ Grady after being >in hibernation since 81. It sounds like the valvetrain is a little >on the tempermental side, is this true with these engines? Other >than that its as smooth as can be. > > > > 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/