Re: rotor for 20v...Sarge's stumbling

["John and Barbara Mallick" <mallick@netheaven.com>]

My '91 200q suffered from severe stumbling once I finally fixed all of the
vacuum leaks and was getting full boost.  Stumble came on at about 1.5-1.6
bar or so, but it ran fine at low boost.  The culprit...bad plugs...some
NGK's with about a 50 mil gap!  I replaced them with the proper Bosch
F5DPOR's and never had a problem since.

Also look for bad wires/cap.  Try misting a little water near the
distributor cap while running.  Do you have trouble starting when humid?

John Mallick
'91 200q (bone stock)