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<blockquote data-quote="SDMF" data-source="post: 209711" data-attributes="member: 412">Vibration @ idle in neutral or vibration @ low RPM in gear?&nbsp; My 1st thought goes to fogging, and rough idle as a result on the 1st trip.&nbsp; That it returned would have me looking at the plugs.1st thing I'd make sure all the plugs are tight.&nbsp; Then I'd take them out, gap them, make sure the ceramic body isn't cracked (like if they dropped one), reinstall, and make sure you get a good &quot;snap&quot; when you put the plug wire back on the top.2.&nbsp; Make sure you're fuel filter is on the correct direction, there should be a little arrow and that arrow should be pointing towards the short run of fuel line going towards the motor.&nbsp; If it's pointing back towards the long line coming in from the tank, it's backwards.3.&nbsp; Check the fuel line, especially around the bulb for air leaks4.&nbsp; If this happens when in gear, check your prop ears, easy enough for them to ding it when moving with a fork-lift, tractor, or atv/utv and not even realize it happened.5.&nbsp; Also, if this is happening in gear @ low speed, spin the prop when the boat's on the trailer and see if it's bent at all.</blockquote>

[QUOTE="SDMF, post: 209711, member: 412"] Vibration @ idle in neutral or vibration @ low RPM in gear? My 1st thought goes to fogging, and rough idle as a result on the 1st trip. That it returned would have me looking at the plugs. 1st thing I'd make sure all the plugs are tight. Then I'd take them out, gap them, make sure the ceramic body isn't cracked (like if they dropped one), reinstall, and make sure you get a good "snap" when you put the plug wire back on the top. 2. Make sure you're fuel filter is on the correct direction, there should be a little arrow and that arrow should be pointing towards the short run of fuel line going towards the motor. If it's pointing back towards the long line coming in from the tank, it's backwards. 3. Check the fuel line, especially around the bulb for air leaks 4. If this happens when in gear, check your prop ears, easy enough for them to ding it when moving with a fork-lift, tractor, or atv/utv and not even realize it happened. 5. Also, if this is happening in gear @ low speed, spin the prop when the boat's on the trailer and see if it's bent at all. [/QUOTE]

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