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Problem water pump Yanmar 2GM
On Sun, 04 Jan 2004 19:13:50 GMT, "Jeffrey P. Vasquez"
wrote: Additional information: (everything Roy says I experienced is exactly what I experienced, but I'm going to throw in my diagnostics before I get into that and maybe someone can teach me something about my clinical method as well). I disconnected the raw water ingress into the water pump and sea water flowed freely from the hose (after turning on the through- hull valve). After reconnecting that, I disconnected the hose leading from the egress of the water pump to the engine block, aimed it at the bilge and started the motor...nothing coming out. That seemed pretty definitive to me. (I've left out steps starting with the strainer and all points in between and skipped to the stuff which I think was clear cut and supports Roy's analysis). Btw, I still haven't found the heat sensor; the Yanmar book isn't particularly clear on some details, I haven't downloaded the S2 manual PDF yet, etc., but the engine is definitely hot. And it's raw water, not fresh water (as I understand it). I may be misunderstanding you here. There is no difficulty telling visually whether a yanmar is raw cooled or fresh. the heat exchanger in the fresh-water-cooled engines is a rectangular tank above and to the right of the cylinder head with a radiator cap in it. It has four hoses, in and out for both raw and fresh water. A raw cooled engine does not have this at all. Rodney Myrvaagnes J36 Gjo/a Does one child rape really change Strom Thurmond's lifetime record? For better or worse? |
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