Engine vibration

[Geoffrey bell]

Need a little help took my boat out two weeks ago and had and engine vibration changed the sparks plugs went out then the vibration was gone. Went to take the boat out today and got the same type of vibration so I changed the plugs again this time th vibration didn't go away. Any other things I should try?

 

[haknslash]

Check the impeller and pump area for any debris. Even something very small can cause a lot of vibration. Easiest thing to look for before jumping into electronic, spark or ignition related issues.

 

[tdonoughue]

Vibration is probably not from the plugs. but probably something in the pumps. Check for something in the impeller. Sometimes you cannot even see it at the top via the cleanout plugs, but you need to get it from the bottom--it is rare, but it happens. But reach all around there and you will probably find your problem.

 

[tdonoughue]

Jinx, @haknslash .

 

[Scottintexas]

Look for loose or missing silicone in the tunnel before the impeller

Check the FAQ under cavitation