My Vectra B Sri 2.2 has a bit of an uneven idle and lacks power at low revs. Read many things about the usual problems, I blanked off the EGR and added the EGR cheater but no difference. I done a live data test using OPCOM only very shortly and most things look consistant but under iignition spark angle I got these readings which seem a bit erratic, does anyone know if these are correct or way out?
Ignition Spark Angle
°CA
12.2
14.2
14.2
13.7
12.2
13.2
12.2
8.7
12.7
22.7
13.7
12.2
12.7
13.2
14.2
18.7
22.7
7.2
-0.3
1.7
-0.7
12.2
8.2
3.2
12.2
10.7
6.2
13.2
10.7
12.2
13.2
12.7
7.2
13.2