Hi everyone.. again So recently I had all 4 injectors renovated and the car has been performing well, sometimes it seems to hit a dead spot when accelerating hard though. Anyway it went into the local garage to have the AC system checked as it had stopped working again and when it came back the glow plug light is flashing. I've done some googling and it seems to suggest that the filter could be at fault, is this possible? I haven't been able to drive it yet to test as my wife is the one who called me with the info. But could it be that the filter (bought genuine from Honda) that was changed in November, so around 10k ago already be in need of changing?