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Jan 23rd, 2013
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Horrible sound coming from motor... #12387472
08/16/17 12:18 AM
08/16/17 12:18 AM
Joined: Jun 2016
Posts: 1,073
i-Fish Offline OP
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i-Fish  Offline OP
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2014 Merc 150 Pro XS

Put her in the water, ran about 3 miles around top speed with no issues (other than the wind knocking my kill switch cord out about 3 times), slowed down and trolled looking for some good fishing spots when after about 8-10 minutes the motor started idling funny for about a minute and then choked and shut off. Cranked it back up only to hear a god awful, high pitched squealing/slight grinding (best way to describe the noise) as it struggled to stay fired up only to choke out again. Would turn over every time but that same noise would present itself and the motor would die pretty much instantly. Called a mechanic nearby and he thinks it could be an air compressor but honestly after doing some research and watching some videos, the noise does not seem to be the same as motors that had bad air compressors. Just got this thing too. COME ON!!! Any ideas, fellas?


If you can't find em wind em.
Re: Horrible sound coming from motor... [Re: i-Fish] #12387627
08/16/17 02:12 AM
08/16/17 02:12 AM
Joined: Dec 2008
Posts: 7,335
Boerne, Texas
G
grout-scout Offline
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Boerne, Texas
Might be belt tension pulley or any of the bearings, you better pray it's not a compressor or you'll be wanting to sell that Mercury for a Yamaha.

Re: Horrible sound coming from motor... [Re: i-Fish] #12388018
08/16/17 01:34 PM
08/16/17 01:34 PM
Joined: Jun 2016
Posts: 1,073
i-Fish Offline OP
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i-Fish  Offline OP
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I am prepared to spend some cash. barf


If you can't find em wind em.
Re: Horrible sound coming from motor... [Re: i-Fish] #12388256
08/16/17 04:17 PM
08/16/17 04:17 PM
Joined: Jun 2016
Posts: 1,073
i-Fish Offline OP
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Twas the compressor. 3 months out of warranty and Merc won't good will it. Ouch.


If you can't find em wind em.
Re: Horrible sound coming from motor... [Re: i-Fish] #12388313
08/16/17 05:01 PM
08/16/17 05:01 PM
Joined: Feb 2008
Posts: 3,795
Arizona
R
ringer Offline
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Arizona
My Merc 250 stopped running and would grind when I tried to start her up. Turned out that the LU seal was blown and no oil so it siezed up. If your motor will actually run then that is not the problem.

Re: Horrible sound coming from motor... [Re: ringer] #12388468
08/16/17 07:20 PM
08/16/17 07:20 PM
Joined: Jun 2016
Posts: 1,073
i-Fish Offline OP
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Originally Posted By: ringer
My Merc 250 stopped running and would grind when I tried to start her up. Turned out that the LU seal was blown and no oil so it siezed up. If your motor will actually run then that is not the problem.


That really hurts. I could tell from the noise that it was coming from the top of the motor when I was on the water.


If you can't find em wind em.
Re: Horrible sound coming from motor... [Re: i-Fish] #12388548
08/16/17 08:32 PM
08/16/17 08:32 PM
Joined: Feb 2008
Posts: 3,795
Arizona
R
ringer Offline
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Might pull the lower plug to check for water just in case. Water will be under the oil. Mine sounded like the grinding was at the top of the motor as well. Never know and easy to check.

Re: Horrible sound coming from motor... [Re: i-Fish] #12388712
08/16/17 10:53 PM
08/16/17 10:53 PM
Joined: Nov 2002
Posts: 3,746
Yantis, TX
Gamblinman Offline
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That's going be an expensive fix if done properly. Replace compressor, both filters for the oil return lines, have direct injectors and fuel rail cleaned.
Failure to do the above could result in another failure to the new compressor, or powerhead.

Re: Horrible sound coming from motor... [Re: i-Fish] #12389032
08/17/17 01:56 AM
08/17/17 01:56 AM
Joined: Mar 2003
Posts: 1,292
Cisco,tx
scruboak Offline
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Cisco,tx
best luck man you have been through it lately ..

Re: Horrible sound coming from motor... [Re: Gamblinman] #12389078
08/17/17 02:15 AM
08/17/17 02:15 AM
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Boerne, Texas
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grout-scout Offline
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Originally Posted By: Gamblinman
That's going be an expensive fix if done properly. Replace compressor, both filters for the oil return lines, have direct injectors and fuel rail cleaned.
Failure to do the above could result in another failure to the new compressor, or powerhead.


And re-priming of the oil system. It's the reason that I will not repower my boat with another merc.

Re: Horrible sound coming from motor... [Re: i-Fish] #12389254
08/17/17 04:07 AM
08/17/17 04:07 AM
Joined: Dec 2008
Posts: 7,335
Boerne, Texas
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grout-scout Offline
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Oh and wait until you get to tackle the oil pump project....... violin

Re: Horrible sound coming from motor... [Re: grout-scout] #12389326
08/17/17 10:53 AM
08/17/17 10:53 AM
Joined: Jun 2016
Posts: 1,073
i-Fish Offline OP
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Originally Posted By: grout-scout
Originally Posted By: Gamblinman
That's going be an expensive fix if done properly. Replace compressor, both filters for the oil return lines, have direct injectors and fuel rail cleaned.
Failure to do the above could result in another failure to the new compressor, or powerhead.


And re-priming of the oil system. It's the reason that I will not repower my boat with another merc.


She's in the hands of Gary Hughes at Hughes Marine Service. I'm confident he's taking the necessary actions to get her primed and ready to hammer them feesh.


If you can't find em wind em.
Re: Horrible sound coming from motor... [Re: i-Fish] #12389476
08/17/17 01:39 PM
08/17/17 01:39 PM
Joined: Jan 2012
Posts: 989
Del Rio, Tx
6BOOMER Offline
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Del Rio, Tx
You had this engine for a month correct? May have been going before you bought the boat. Sorry for your problems, happened to mine but caught it before it blew.

Re: Horrible sound coming from motor... [Re: 6BOOMER] #12389573
08/17/17 02:50 PM
08/17/17 02:50 PM
Joined: Jun 2016
Posts: 1,073
i-Fish Offline OP
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Originally Posted By: 6BOOMER
You had this engine for a month correct? May have been going before you bought the boat. Sorry for your problems, happened to mine but caught it before it blew.


Hard to say. It's run fine during the several times I've had it out since I bought it. Ran all day long each time with no issues. From the moment I noticed it idling funny to complete failure was about 15 minutes. That's it. No signs of any problems prior to that.


If you can't find em wind em.
Re: Horrible sound coming from motor... [Re: i-Fish] #12389581
08/17/17 02:56 PM
08/17/17 02:56 PM
Joined: Jan 2012
Posts: 989
Del Rio, Tx
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Del Rio, Tx
Happens not much you can do bought it. Other than that my 225 Pro XS has been excellent. Good luck.

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