Miss Piggy's Miss. :-(

[Robert Myers]

Hi Y'all,

Several days ago Miss Piggy ('95.5 S6 w/ RS2 mods and the 1.8t coil 
mod, etc) dropped a cylinder just before I got home with her.  Well, 
at the time the temperature was about 4 degrees F and I decided 
looking at her could wait a few days.  Today we're having a heat wave 
(all the way up to 43 F) so it seemed a good day to examine her.

Found the miss quickly enough.  Disconnected injectors one at a time 
and found that the idle got no worse when #3 was disconnected.  OK, I 
got into my Rosattobin and retrieved my standby 1.8t coil and swapped 
it into #3.  Problem solved - right?  No wrong.  Hmmm...  The #3 plug 
looked a bit doubtful so it's back to the Rosattobin for a set of 
plugs.  Changed plugs all around.  No help.

Hmmm...  Let's check compression.  150, 150, 145, 150, 125 front to 
back.  #5 looks weak but that's not where the miss is.  OK, let's 
stick in a fresh ECU w/ freshly burnt chips.  No change.  Checked for 
B+ power at the white plugs on the firewall.  DMM sez all is OK w/ 
nominal 12 volts everywhere.  Reconnected white plugs.  No change.

Suggestions?

Bob