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Old 06-24-2006, 04:09 AM
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CAL 2-30 also known for this?

My locked up A4 on my CAL 2-30 has a hot section that goes up into the cooling jacket, without going up and down prior to that.

First, regarding the water in your carburetor:

Catalina 30's are very prone to getting water back into the engine from the exhaust system. The center cabin location of the engine allows practically no space to construct the hot section (or dry section) of the exhaust system so that it extends upward before it drops down and into the inlet of the fiber glass water lift muffler.

This situation results in very little storage capacity within the system for water, and it takes very little cranking of the starter during a hard starting episode before the water lift muffler fills (since the engine isn't starting to blow the water out of the back of the boat with the exhaust) and water then flows back into the exhaust manifold and into the combustion chambers.

The only protection against this threat is to be religious in keeping the raw water through-hull valve closed anytime that the engine is being cranked for any reason and the engine is not running.
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