Any thoughts as to how I can unplug the water tube on my Johnson 300? It is the upper part of the tube that is blocked. I was thinking that I could either (i) blast it with compressed air or (ii) heat it with a torch (I have had some success in the past heating tubes to clear them — the crud inside turns to liquid).
I already tried a pipe cleaner, but the two 90 degree angles prevent that from working. I also tried a hair dryer, mostly to see if air was getting through (it wasn’t).
Thanks!