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Duh!, I forgot about that. I have an Epson P400.

While refilling my Precision Colors refillable carts, I filled one of the two blacks with the wrong ink. Should I drain the cart and then refill? If so, what is the best way to go about this? The other option I see would be to get two new carts and start from scratch. Any suggestions for how I...

Success at last, what appears to have worked was a bit of air pressure through the cart with a syringe. I am baffled why it did not work earlier as I tried several times on the problem colors. So I used a bit of air pressure, following up with a head cleaning, and finally the orange has a...

Well I tried letting the Piezo Flush soak for an hour or so without success. In looking at the cart, it may be that it has lost it's prime. There is a small amount of ink in the round chamber, I'm just not sure if it is enough. Will reprime and see what I get.

First, thanks for your response! That is how I started, using the Piezo Cleaning Fluid and their dummy cartridge and cleaning as per their instructions. When that did not work, I proceeded to follow the instructions that I found at InkProducts. Gently pushing air through the cartridge vent...

I use the InkJet Plumber App to do print test pages every 50 hours or so, it's a great little app. I recently found that it had stopped working and for a couple of weeks or so no test prints were fired. Several of the colors were clogged and all brought back except for orange. Using both Piezo...

I may have found the problem, the printer driver. My Epson driver is version 9.80, this on my Mac running Big Sur, but I see on Epson's site that version 12.62 is available. I would like to update, but I know that there can be issues with firmware updates locking the printer when using third...

I'm using my Epson SureColor P400 on my Mac with Big Sur (11.7.1), and I get the error "Epson Printer Utility 4 cannot be launched". According to MacRumors, the Epson Utility does not run on Big Sur. I can check ink levels, print test pages, etc. but I need to get into the utility to change the...

I had the same issue, my Apple prevented the program from running. Going into the Privacy and Security Settings was the work around. Inkjet Plumber shows up in the menu bar along with Bluetooth, Displays, etc. I just installed it today and ran two test, it appears to be fine. Inkjet Plumber did...

Success at last! :) After more than a week, I was finally able to get my P400 printing again, mostly with the help from those who chimed in on this thread and a couple of YouTube videos. The attached nozzle checks are the two most recent. I think the turning point was the technique of gently...

Finally some improvement! I found a YouTube video here, it has you using a syringe to push air through the cartridge breather hole. I tried it and for the first time all colors printed including about half of the bars on the troublesome PK cart. Yellow and Orange are now back to printing without...

Thanks for your patience with my inexperience, here is where I am. I just completed 10 full color 8.5 x 11 prints, the top nozzle check is where I was before the first print. The middle nozzle check was after 5 prints, followed by the final one after 10 prints. Before I initiated the 10 prints I...

Thanks for the suggestion, however it did not make a noticeable difference. The top nozzle print was after printing 10 test patterns, I then proceeded to do a Epson cleaning, the bottom nozzle print was after the cleaning. Before the cleaning, the orange and PK and quite are bad, after the...

Yellow and MK Black appear to be okay, hopefully that means delamination is not at play here. The first time I flushed the heads with PiezoFlush, the syringe was very difficult to push, it finally moved but very quickly and all of the fluid was injected immediately. After that I was more...

Yes, I did do similar flushing, I used the instructions as posted here, from Inkjet Mall which is where I purchased the PiezoFlush. The video that you posted is actually a little more straight to the point, plus there are many very helpful comments. One such comment said that it took about 100...

So where to I go from here, are there any other options to get the clogs cleared up? I'm in unfamiliar territory, never having clogs anywhere near this severe before.

I started working on getting the printer back to good working order about four days ago, magenta, red and PK all showed all, or almost all bars not printing. Using the procedures that come with PiezoFlush at first made the problem worst. I kept at it, cleaning the print head with PiezoFlush and...

I have spent the last two days trying to undo clogs on my Epson P400, the printer sat unused for a month or so and 3 or 4 of the colors were almost totally blocked. I used PiezoFlush to clean underneath the print head, and cleaned the head using PiezoFlush and the dummy cartridge that comes with...

I still can't get refillhouse to load, browser just stalls. What I'm looking for is a high quality aftermarket cart, would be used in my two MX922's. These printers, along with an old high end HP laser printer, get general everyday use. I want to avoid refilling, that is what I do on my Epson...

I should clarify, I have had a couple of Canon's with this issue, one of my current MX922's is exhibiting the issue now. Rather than spend time and energy trying to fix it, I'm moving to a different printer and want to avoid this happening again. So, starting from scratch with a new to me...