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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Old 11-23-2009
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No raw water discharge in exhaust

All-

I have a 2qm15 that is having some over heating issues. Upon starting it up, I noticed I had no water coming out at the stern and the temp quickly rose up to 130+. The seacock was open and strainer is clean. The water pump is working as I have water going into the manifold. I even pulled out the thermostat and pulled the back anode and found positive waterflow when starting/stopping the engine. I replaced the anode and started the engine without the thermostat but still had no raw water discharge in the exhaust. The mixing elbow is only 8mos old and checks clear. Any other ideas or do I have a clogged exhaust manifold?......
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Old 11-23-2009
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As I lay my 260 lbs in the bowels of the engine shoebox, I find there is a diverter at the exhaust manifold which diverts water to the in-line water heater. I disconnected the water heater hoses and blew into one end and met great opposition. Viola!!! The blockage has been found!!! Simple fix....I bypass the useless water heater and reconnect all my hoses and clamps. I now have circulation and a happy engine once again.

Now my back, legs, and arms no longer work....can anyone recommend a beautifull woman to walk all over me??? errrr nevermind...that be the Admirals job.... Arrgh!
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Old 11-23-2009
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Glad to have helped!!
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1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
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