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Slight popping sound when going up on plane
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<blockquote data-quote="~kev~" data-source="post: 495653" data-attributes="member: 32401"><p>30 hp Evinrude, around 1996 model.</p><p>15 foot alumaweld boat</p><p></p><p>Last summer I noticed a slight popping sound, which was barely noticeable when the boat goes up on plane. If I go slow and ease the boat up on plane there is no popping sound. The pop does not sound like metal on metal, it sound more like plastic. At first I thought it was my fuel tanks pulling a vacuum, then popping when the air pressure stabilized. But I am doubting that theory.</p><p></p><p>I recently did a carb tear down and clean as there was lots of trash in the carb. Fuel lines from the carb all the way to the fuel tank were replaced.</p><p></p><p>There is very little slack in the prop back and forth movement, no more than usual. I would say the prop moves back and forth maybe an 1/8 inch.</p><p></p><p>Oil in the lower unit is changed twice a year or so. Boat is used in fresh water, mainly on rivers.</p><p></p><p>Any suggestions?</p><p></p><p>Pic attached of motor on local river.</p></blockquote><p></p>
[QUOTE="~kev~, post: 495653, member: 32401"] 30 hp Evinrude, around 1996 model. 15 foot alumaweld boat Last summer I noticed a slight popping sound, which was barely noticeable when the boat goes up on plane. If I go slow and ease the boat up on plane there is no popping sound. The pop does not sound like metal on metal, it sound more like plastic. At first I thought it was my fuel tanks pulling a vacuum, then popping when the air pressure stabilized. But I am doubting that theory. I recently did a carb tear down and clean as there was lots of trash in the carb. Fuel lines from the carb all the way to the fuel tank were replaced. There is very little slack in the prop back and forth movement, no more than usual. I would say the prop moves back and forth maybe an 1/8 inch. Oil in the lower unit is changed twice a year or so. Boat is used in fresh water, mainly on rivers. Any suggestions? Pic attached of motor on local river. [/QUOTE]
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Slight popping sound when going up on plane
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