Join Date: Dec 2001
Location: Home Port: Rock Hall, MD
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If it's not the joker valve on your model K, you might want to check the piston rings (although removing the piston assembly to replace them can be a bear). A problem with suction or leakage might occur if the rings are worn or if they were damaged, e.g. nicked or scarred, during a rebuild, which can happen because they are a very snug fit and must be eased in very carefully...I use a lot of grease or petroleum jelly to slide them when doing a rebuild on ours.
You've already warned us not to try to "sell" you on the K, but I've got to say we've had one on JUNO since she was built and it works amazingly well for us -- never clogs, backs up, easy to pump, etc. But, as I mentioned, the rebuilding procedure is a real knuckle-buster.
PSC 40 -- #46