topic PIXMA G620 - Left Print head (B, Gr, R) isn't printing at all - no ink in tubes in Desktop Inkjet Printers

PIXMA G620 - Left Print head (B, Gr, R) isn't printing at all - no ink in tubes

scottieb1 — Sun, 08 Mar 2026 15:50:19 GMT

Hello. Full disclosure - this printer sat for a long time - months - with no ink in the black or grey ink tanks.

Recently I purchased new ink and refilled all the tanks, but when I printed a test pattern, there was nothing at all in top section for the GY, BK, R sections, but the C/M/Y all worked fine.I tried cleaning and deep cleaning, but nothing changed.

Looking inside the printer, I can see that the 3 of the tubes - that should have the BK, GY, and R inks in them are completely empty and clear. There is nothing but air in them. Using a syringe, I am able to pull ink through the tubes, but it kind of just sucks back. But once I did this pulling through I tried an ink flush which still didn't help.

Is there some kind of pump in there that could be broken? Is there maybe a bad clog I could manually clear? Where should I be looking? The tubes themselves aren't clogged - ink comes through. So what gives?

Thanks for any help

Re: Canon PIXMA G620 - Left Print head (B, Gr, R) isn't printing at all - no ink in tubes

shadowsports — Sat, 07 Mar 2026 07:51:09 GMT

Greetings ,

Performing an ink flush from the maintenance menu is the recommended procedure for charging the ink tubes. You may have one or more serious clogs.

I would suggest contacting Canon support. 1-800-652 -2666.

Re: Canon PIXMA G620 - Left Print head (B, Gr, R) isn't printing at all - no ink in tubes

scottieb1 — Sat, 07 Mar 2026 13:29:05 GMT

Thanks for the reply - would the fact that I am able to pull ink through the tubes with a syringe suggest that the clog is in the printer head itself? If the clog was at the tank or the tubes the syringe wouldn't work, right?

Re: Canon PIXMA G620 - Left Print head (B, Gr, R) isn't printing at all - no ink in tubes

shadowsports — Sat, 07 Mar 2026 19:16:32 GMT

The printhead(s) seem likely since you can draw ink with a syringe. Model of the printheads are CH-21L and CH-21R. I'd get advice from Canon first though.