Sometimes if I'm lucky I get to drive my lovely zafira GSi, a few months back I noticed that on boost it was holding back but it didn't feel like a misfire. I changed the plugs, put good fuel in, treated it to a drop of redex and changed both BCS's. Oh and part de-restricted the air box. Outcome was slightly better but not cured. No lights on or fault codes by the way.
Anyway money was an issue and it wasn't that bad plus the wife didn't notice it so it got left, and I didn't want to change parts randomly until I cured it.
I drove it the other day in the wet and it was missing like a good un. Then I thought maybe it was the coil pack as this was an unmistakable misfire plus dampness.
The wife went to start it yesterday and it wouldn't fire up, finaly it started and restarted ok but had a really bad misfire from 2000rpm to 3000rpm then the management light came on but went out on next start up.
I was just wandering if anyone has had the same fault, does it sound like a coil pack, do they get worse?
Any ideas would be greatly appreciated.