The readings on #4 indicte some sort of damage occuring. A fiberoptic scope might help you see just what. It is going to be a head removing fix. Probably a burned piston or dropped valve seat. Harold McElraft - 3354 --- In dmcnews@xxxxxxxxxxxxxxx, "drdhdmd" <doctorDHD@xxxx> wrote: > So while I was wasting time waiting for the penetrating oil to work > into the bolts holding down the coolant Y pipe, I thought it might be > a good time to check the cylinders for compression. My results are > less than promising. > > Cylinder# Comp 1st run Comp 2nd run Insulator Appearance > 1 140 155 Black and sooty > > 2 115 125 White like brand new > > 3 107 120 Tan > > 4 40 40 Tan and wet with wet > black but not oily electrodes > 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/