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Minor squeak when in idle from my '13 merc 4 stroke

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Minor squeak when in idle from my '13 merc 4 stroke

Old 03-20-2019, 07:56 PM
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Default Minor squeak when in idle from my '13 merc 4 stroke

What is the squeak I get in idle (mainly when idling but not always) on a 2013 40hp 4stroke Merc. Runs perfect minor this annoyance
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Old 03-21-2019, 02:44 AM
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My crystal ball isn’t pulling anything up. Maybe something like a video with sound might help.
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Old 03-21-2019, 06:18 AM
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Originally Posted by davidwademarine View Post
My crystal ball isn’t pulling anything up. Maybe something like a video with sound might help.
That's usually what the dealers tend to say
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Old 03-21-2019, 06:37 AM
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Originally Posted by taymag View Post
That's usually what the dealers tend to say
I aplogise for not being able to offer you free diagnostics with your wealth of information. At least you got your money’s worth. Good luck.
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Old 03-21-2019, 07:08 AM
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Not sure if it has a mid shaft bearing but that would be my first guess.

Pull lower and grease
noise should go away
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Old 03-21-2019, 07:26 AM
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don't know much about you motor , "but guessing " the cam belt may be squeaking.
try spraying a little WD 40 in the general direction and see if the squeak goes away .
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Old 03-21-2019, 07:39 AM
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Originally Posted by 1breakinit View Post
don't know much about you motor , "but guessing " the cam belt may be squeaking.
try spraying a little WD 40 in the general direction and see if the squeak goes away .
think this motor has a chain not a belt.

dont spray wd40 on any belts
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Old 03-21-2019, 07:40 AM
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It is probably the propeller hub rubbing on the lower unit.
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Old 03-21-2019, 07:43 AM
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Originally Posted by davidwademarine View Post
My crystal ball isn’t pulling anything up. Maybe something like a video with sound might help.
You forgot the rule of THT.

We have done so much, for so long, with so little, that we can now do all things with nothing.

Shame on you for not giving the man an answer. If you have to, make one up. Like so many (most) do here.

Modus operandi here is for at least 8 different answers to be provided to one question. The questioner then gets to choose from the 8 which answer he wanted in the first place.
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Old 03-21-2019, 07:46 AM
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Originally Posted by H2OBUG View Post
think this motor has a chain not a belt.
dont spray wd40 on any belts
The type of motor is irrelevant. Not needed to provide an answer.

I like to put a sillycone dressing on my cam shaft drive chains to help keep them quiet.
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Old 03-21-2019, 07:48 AM
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Originally Posted by davidwademarine View Post
My crystal ball isn’t pulling anything up. Maybe something like a video with sound might help.
By the way, I have some rub marks on my motor. What are they from and what needs to be done to fix them?

Fire the old ball up and tell me what to do.
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Old 03-21-2019, 07:49 AM
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Originally Posted by H2OBUG View Post


think this motor has a chain not a belt.

dont spray wd40 on any belts

a little WD 40 on a belt just to test the waters is not going to harm the belt.
to keep the critics happy "just spray a bit of water at it".
as posted , i am not familiar with this motor (could have googled to see ) so a belt squeak , tensioner or idler pulley was a "GUESS' assuming it may or may not have belt driven cams...
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Last edited by 1breakinit; 03-21-2019 at 07:54 AM.
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Old 03-21-2019, 09:34 AM
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Originally Posted by alloyboy View Post
You forgot the rule of THT.

We have done so much, for so long, with so little, that we can now do all things with nothing.

Shame on you for not giving the man an answer. If you have to, make one up. Like so many (most) do here.

Modus operandi here is for at least 8 different answers to be provided to one question. The questioner then gets to choose from the 8 which answer he wanted in the first place.
I have fixed and maintained my 4 outboards my whole life by myself with general questions on forums like this and helpful people that have had the same problem sharing their solution(s). I may have to do some digging but its usually the difference between $50 and $1000.

Some people are helpful and contribute to keep this forum going and some people have 7000 posts of irrelevant content, luckily the help outweighs the clutter.
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Old 03-21-2019, 09:54 AM
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Could just be the driveshaft bushing, not super uncommon.
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Old 03-22-2019, 12:57 PM
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You had the interest, briefly, of a Mercury dealer. He made a suggestion.....

So I guess we will not see/hear a video?
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Old 03-22-2019, 07:36 PM
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Originally Posted by H2OBUG View Post
Not sure if it has a mid shaft bearing but that would be my first guess.

Pull lower and grease
noise should go away
Yes, pull the lower and grease the shaft. My '08 40hp 4stroke did the same thing until I did this.
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Old 03-22-2019, 08:18 PM
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Have you checked for mice?
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