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  #1  
Old 06-14-2013, 10:56 PM
mrhodes12 mrhodes12 is offline
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Vibration

Took the boat out for the second time this summer and noticed a vibration at 2000-3000 rpm. I figured a bent prop, so switched to a new prop, problem still there. Any ideas of cause? Bad fuel, fuel pump, tranny problems? Anyone else had problems such as this?
Thanks Mitchell
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Old 06-15-2013, 08:46 AM
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bturner2 bturner2 is offline
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Check for play in the thrust bearing. Could also be alignment.
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Old 06-15-2013, 09:39 AM
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mikeg205 mikeg205 is offline
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check true-ness of drive shaft - if prop was struck - shaft may have some wobble to it.
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Old 06-15-2013, 09:44 AM
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j.mccreight@hotmail.com j.mccreight@hotmail.com is offline
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Quote:
Originally Posted by mikeg205 View Post
check true-ness of drive shaft - if prop was struck - shaft may have some wobble to it.
Ha you said wobble...
http://www.youtube.com/watch?v=UH5hUULu4Nk
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Old 06-15-2013, 11:01 AM
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mikeg205 mikeg205 is offline
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Quote:
Originally Posted by j.mccreight@hotmail.com View Post
lol... too funny
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Old 06-16-2013, 11:38 PM
john jones john jones is offline
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I didn't believe it myself. Everyone said that you should be able to spin your prop with two fingers. I never could. On my last two boats I always had to use two hands. I figured that was the way it was. I also had a vibration at 2000 rpm, I pulled my prop shaft and it was bent!

After I had the shaft straightened back to .004, replaced cutlass bearings, installed the shaft and believe it or not I could spin it with two fingers! Vibration at 2000 rpm was gone.

I would look towards your prop shaft.
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  #7  
Old 06-19-2013, 11:26 PM
mrhodes12 mrhodes12 is offline
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After some research I drained the gas tank added sea foam and fresh non-ethanol gas, the boat ran much better, I know I will be adding a ethanol treatment from now on. Thanks for your replies
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