I tried refilling a coloured cartridge for an deskjet 880C. I did what the instructions said and tried the cleaning process after I refilled it about 6 times but red is still not appearing on the paper. The cartridge doesn't seem to be refilled but I did everything it said. I filled up all the colours in the correct holes and the refill was empty when I finished but the cartridge doesn't print in red.
The instructions said that gently squirt the refill but I found that the refill didn't fill that easy and it filled very slowly. Maybe the vcartridge was too old.. I am not sure.