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Dec 30th, 2023
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 Motor knocking
#8919242
05/10/13 07:38 PM
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Joined: Feb 2009
Posts: 62
JEEPMANMC
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2009
Posts: 62 |
I could sure use some advice.
I have a 1995 Mercury 115 and it is making a tapping/knocking noise at all rmps.
I took it to a shop close to me and they went through the fuel system for about 650 and then told me to run it. I did but they knew it was still making the same noise. I took it back today and they are going to look deeper. It is obvious it is something mechanical.
I guess a big question is does anyone fix something like that instead of throwing a whole new upper end of the motor at it? If a rod is knocking or something similar can just that be fixed.
They said I have great compression and there is no metal anywhere they have looked so far.
Thanks a bunch
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Re: Motor knocking
[Re: JEEPMANMC]
#8919282
05/10/13 07:51 PM
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Joined: Apr 2013
Posts: 97
Cata-Marine
Outdoorsman
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Outdoorsman
Joined: Apr 2013
Posts: 97 |
Man that's a tough one. It really depends on what they find in the cylinder. If the walls and pistons or good it could be a wrist pin or connecting arm and those can be replaced. But it could be so many things causing that. Is this new noise or has it progressively got louder?
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Re: Motor knocking
[Re: JEEPMANMC]
#8919467
05/10/13 08:52 PM
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Joined: Aug 2011
Posts: 1,689
ddantidwell
Extreme Angler
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Extreme Angler
Joined: Aug 2011
Posts: 1,689 |
My question is: Why they went thru the fuel system and charged you $650, when they knew something else was wrong with it? That doesnt make sense to me. And why would they tell you to just run it anyway. If it were mine, i would take it to someone else.
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Re: Motor knocking
[Re: JEEPMANMC]
#8919934
05/10/13 11:41 PM
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Joined: Feb 2009
Posts: 62
JEEPMANMC
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2009
Posts: 62 |
The noise started out of the blue and has not got any louder. I have not been running it since it started other than the other day after I picked it up.
Thanks
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Re: Motor knocking
[Re: JEEPMANMC]
#8920441
05/11/13 02:41 AM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
Need to drop the lower unit and see if noise is still present.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: Motor knocking
[Re: JEEPMANMC]
#8921105
05/11/13 01:13 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
that's what i was thinking too. could be in the gear case.
pull the bottom drain plug and look for metal and milky oil.
like the other guys. could be alot of things.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: Motor knocking
[Re: JEEPMANMC]
#8924087
05/12/13 04:59 PM
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Joined: Jan 2005
Posts: 1,910
heybaylor
Extreme Angler
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Extreme Angler
Joined: Jan 2005
Posts: 1,910 |
heybaylor
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Re: Motor knocking
[Re: JEEPMANMC]
#8931787
05/14/13 07:53 PM
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Joined: Apr 2013
Posts: 97
Cata-Marine
Outdoorsman
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Outdoorsman
Joined: Apr 2013
Posts: 97 |
I would drop the lower and run the engine briefly. That's typical of bearing in the lower unit.
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Re: Motor knocking
[Re: ddantidwell]
#8933645
05/15/13 04:32 AM
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Joined: Mar 2013
Posts: 442
Going Green
Angler
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Angler
Joined: Mar 2013
Posts: 442 |
My question is: Why they went thru the fuel system and charged you $650, when they knew something else was wrong with it? That doesnt make sense to me. And why would they tell you to just run it anyway. If it were mine, i would take it to someone else. Seriously. Thats about as asanine as it gets. Did you sign a work order for fuel system work? If not, you should be asking for your $650 back. With regards to your problem, I also think you should start by checking your lower unit out. Change the oil and check for metal/milky looking oil before you go dropping it completely.
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