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My 1999 mercruiser 3.0 makes a noise at random when under a load at times. I have 3 videos on youtube of it running last week it made the noise some but not as bad as when under heavy load in mid summer. What is causing It?
Thanks,
Rome
http://youtu.be/1_LAyLfwbYk
http://youtu.be/1_LAyLfwbYk
My '99 3.0 mercruiser makes a popping noise when engine gets hot ( weeds wrapped around drive). But it also makes the random noise when I have a full load in the boat and engine is at normal temp at higher rpms. Mechanic who put in new water pump last year said that would fix it but it hasn't...
