The plug wire contact probably isn't clamped around the plug terminal. The spark is jumping the gap and making a pop. Skin the boot back a little, push the contact fully over the plug end and slip the boot back down the wire over the well. Whoever changed the plugs was in a hurry. Check them all out-see that all the plugs are new. Warren at DMC delorean_3 wrote: > All, > > This weekend I replaced my old fuel lines with Hervey's stainless > ones. After a little trial and error, I was able to find and eliminate > all the leaks around the distributor top. When I started it to check > for any leaks, I kept hearing a popping sound coming out of the engine > compartment that I hadn't heard before. After quite a bit of searching > I finally found the sound. Apparantly, the middle spark plug boot on > the left side was hopping up and down making a popping sound. The > spark plugs were replaced about two weeks ago, but I am almost positive > they were tightened down to specification. My question is first off, > what would be causing this? and is it harmful to my engine if I don't > get it remedied right away? Thanks in advance for any help. > > Jack > VIN 2728 > Laurel, MD > > > > > > > > > > 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/ <*> 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/