Vibration at slow speeds

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dbyford

Recruit
Joined
Jun 18, 2012
Messages
3
I recently had the gimble bearing replaced, not real happy with the quality of work, however I am still experincing vibration at slow speeds, that being said I also put a cheap three blade prop on. Could that be a part of the problem.

2004 Glastron mercruiser 5.0 engine.
 
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steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Vibration at slow speeds

Could be the prop.
Do you have the original to try.
Also could be universal joints.
I'm no I/O expert but I don't think a gimble would cause vibration
more likely sloppiness.
 
spdracr39

spdracr39

Lieutenant Junior Grade
Joined
Aug 30, 2010
Messages
1,238
Re: Vibration at slow speeds

Agree on the u-joints. Why did you have the gimble replaced ? I always seem to have to do both.
 
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dbyford

Recruit
Joined
Jun 18, 2012
Messages
3
Re: Vibration at slow speeds

Ok, just got a call from the boat place. Its not in the out drive at all, it is some where in the motor. No work has been done to the motor at all. Now what?
 
oldjeep

oldjeep

Admiral
Joined
May 17, 2010
Messages
6,455
Re: Vibration at slow speeds

Plugs, wires and distributor cap/rotor would be the first things I would check. Then a compression check.
 
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steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Vibration at slow speeds

A weak or missing cylinder might seem like a vibration.Did they check the coupler .
again not an expert but did they check the coupler as I understand it it is between the motor and the drive.
Also on automotive engines there is a vibration damper on the front pulley.
 
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dbyford

Recruit
Joined
Jun 18, 2012
Messages
3
Re: Vibration at slow speeds

They tore it down to the gimble bearing, the troubling factor is, it only does it around 1500 rpm, no other time.
 
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