I have a Corsa model D 2011 plate.
3 months ago it went jerky and lost most of its power. I took it in and they said it was coil pack and changed it.
They didnt change spark plugs, so I did that myself.
3 months later, yesterday, the car started and misfired, i drove for 2mins and lost all my power.
Today it went into the dealer, towed, they say its condensation in the coil pack and the spark plugs have corroded, they said they cant do any more as theres no engine codes for some reason.
Their solution was to put new spark plugs in (which they charged me a lot for) despite the ones i put in being decent quality and 2 months old. And to add a load of silicone to the coilpack parts to keep out condensation.
I will include a pic below of the plugs that came out for those out there who can gleam knowledge from them, were their actions useful? or should i expect further issues, as surely this doesnt resolve the root cause of the condensation, assuming thats even the issue...
Would appreciate any help here, i feel like they dont know what they are doing, and I want to preempt a bigger issue.