If the precombustion chambers get stuck again, I pull the fuel shutoff and turn (bump) the engine over with the injectors out. It doesn't hurt to have something to cushion the chamber as it is ejected from the port.
I think the aluminum sleeve is fine. I can't figure out how it would work with out holes in it. It has to have coolant on the inside and outside. Just as long as the saltwater tubes don't leak you should be fine. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Aug 13, 2015 4:16 PM, "Gary Russell via CnC-List" <[email protected]> wrote: > Well, I bought a C&C 37+ a few weeks ago and have been having nothing but > trouble. It started with a fuel injector seal failure that allowed > combustion gases to escape into the cabin. Below the injectors are > pre-combustion chamber that where frozen in place requiring the cylinder > head to be removed. While the head was out, I decided to do a valve job. > And since the heat exchanger had to be removed, I decided to have it > cleaned out at a radiator shop. There is an aluminum sleeve around the > cooling tubes in the heat exchanger that had perforated. My understanding > is that raw water circulates through the tubes and fresh water surrounds > them. It seems there is fresh water on both the inside and outside of the > aluminum tube, so I'm not sure if the perforations are a problem. The > radiator shop guy wasn't sure either. It wouldn't matter, except the heat > exchanger is no longer available from Yanmar and the cooling tube assembly > is $1K, and can only be replace if (big if) I can get the frozen one out. > What happens if I ignore the problem? The radiator guy pressure tested the > assembly and it held pressure. Any ideas? I'm really desperate! > > Gary > '90 C&C 37+ > High Maintenance > East Greenwich, RI, USA > ~~~~~~~_/)~~~~~~ > > > _______________________________________________ > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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