I've recently swapped out the heagasket on my 1989 mk1 1.6 eunos.
Along with radiaator, fan switch, cambelt, pulleys, alt / p/s belt.
Apart from the car smoking like a gooden, it runs fine and purs up the road - but under 2k rpm it's slightly lumpy, it wasn't lumpy or rough idling before the HG change, so thinking I've not seated a wire or something back correctly.
Is it possible for a bad ground to cause this? Any thoughts.