my 1986< justbought>merc i/o makes a vibrating noise

rtl743

Recruit
Joined
Apr 22, 2014
Messages
2
Hi all any help will be greatly appreciated. I just got a 86 galaxy with a 140 series mercruiserI/o. first when you grab the propeller you can move it in and out a little more than a 1/4 inch,and the shaft its bolted to moves with it. its not a nut tight problem I just not sure if its to move that much. 2nd when I put it in gear and throddle up when its out of water it makes a fast vibration noise only above 2000 rpm. I think the 2 are related and this might be normal im just not sure. I had it out twice over the weekend in water everything seems fine. I just don't want melt any bearings. I red the trouble shooting in the seloc manual and didn't really anser my questions. I don't want to tear it apart if its not needed. Any other things that you might know about my boat or motor <tips> would be great cant wait for warmer weather. thanks Columbia pa Ryan
 

Starcraft5834

Lieutenant Commander
Joined
Jun 2, 2013
Messages
1,677
Re: my 1986< justbought>merc i/o makes a vibrating noise

Your prop. Properly installed should have a little play..ie being pulled on.. thats normal. All engines vibrate and shake some too. Watch your engine temp when running.. 140-160 degrees is normal..
 

Starcraft5834

Lieutenant Commander
Joined
Jun 2, 2013
Messages
1,677
Re: my 1986< justbought>merc i/o makes a vibrating noise

If running out of water..use muffs...I assume u already know that
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,277
Re: my 1986< justbought>merc i/o makes a vibrating noise

remove the prop and retest for vibration. This makes no sense because if it vibrates on land ,it vibrates in the water too.
" I had it out twice over the weekend in water everything seems fine."
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,906
Re: my 1986< justbought>merc i/o makes a vibrating noise

remove the prop and retest for vibration. This makes no sense because if it vibrates on land ,it vibrates in the water too.
" I had it out twice over the weekend in water everything seems fine."

Ayuh,.... My guess is it was bein' Tested, at Full Up Tilt, bindin' the u-joints,....
 

rtl743

Recruit
Joined
Apr 22, 2014
Messages
2
Re: my 1986< justbought>merc i/o makes a vibrating noise

Ayuh,.... My guess is it was bein' Tested, at Full Up Tilt, bindin' the u-joints,....

yep it was on trailer trim full up im learning thanks for the help. just greased up
 
Top