350 Mercruiser Alarm
I had an overtemp alarm sound as a result of a damaged seawater
impeller on my closed freshwater cooling system. I replaced it and restarted. I was surprise that the alarm went off again when the RPMs were increased. The temp gage was reading normal (1/4). I rechecked everything I could think of - engine oil/pressure, outdrive lube, temp and all appeared to be ok. The alarm will not sound until the engine gets up to temp and then I increase the RPMs to ~1800. After it starts sounding, it will remain sounding until the engine goes cold and is restarted. My questions a 1) Besides the three items listed above (oil, temp and drive lube) is there any other thing that will cause the alarm to sound? 2) If I mistakenly mixed the sewater hoses (inlet ond outlet) would this cause the alarm to sound and would the temp still show "normal"? 3) After I replaced the impeller, the first time the alarm re-sounded was when I was attempting to adjust the trim, any relation? Any ideas, inputs or suggestions would be greatly appreciated, |
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