So, I've been battling WOT problem.... at Chris' suggestion i interrupted fuel sys checks to run a comp test
1994 4.3lx
Results:
1...170
2...175
3...170
4...165
5...175
6...179
Numbers look fine.
Spark plugs...
Port (1,3,5) dark sooty
SB (2,4,6) light sooty
Any conclusions from this...