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Dec 30th, 2023
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 250 SHO smoking bad..... help
#14382171
06/01/22 01:27 PM
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Joined: Jan 2009
Posts: 257
mcbassin
OP
Angler
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OP
Angler
Joined: Jan 2009
Posts: 257 |
So my son and I are on vacation 1000 miles from home and my engine started smoking this morning bad. I killed it and have started it since. I noticed the last few days it puffed a little smoke on star up a few times, today it didn’t stop. I can smell oil burning smoke too. We have done a lot of idling and since it was windy, we ran slow but under a heavy load.
The engine is 2012 250 SHO with around 250-260 hrs. Never had any issues.
I’ve read about the engines “making oil” will this get into the combustion chamber? I am on the water using the trolling motor only. I plan to check the oil level when I get off.
Just hoping I didn’t break a piston ring or ruing the valves?? Any help would be great
Thanks
Last edited by mcbassin; 06/01/22 01:28 PM. Reason: Spelling
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382205
06/01/22 02:05 PM
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Joined: Nov 2007
Posts: 5,794
ssmith
TFF Celebrity
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TFF Celebrity
Joined: Nov 2007
Posts: 5,794 |
typically when this happens you will have a crack in the heads or block allowing water to get in the oil. making oil is a seperate kind of problem pull your dipstick an see if the oil is milky.
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382231
06/01/22 02:25 PM
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Joined: May 2007
Posts: 1,824
NoWeighers
Extreme Angler
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Extreme Angler
Joined: May 2007
Posts: 1,824 |
I second the cracked head..
Happened to mine with same symptoms.. Same year model as well..
James Bendele
Falcon Lake Tackle
"On the eighth day, Man invented the Fish Hook."
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Re: 250 SHO smoking bad..... help
[Re: ssmith]
#14382284
06/01/22 03:00 PM
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Joined: Jan 2009
Posts: 257
mcbassin
OP
Angler
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OP
Angler
Joined: Jan 2009
Posts: 257 |
The oil is milky. I’m assuming the head or heads are toast. I never got over temperature alarm though.
Is there any fixing this or do I have to replace the power head?
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382285
06/01/22 03:02 PM
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Joined: Feb 2011
Posts: 2,116
sprigsss
Extreme Angler
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Extreme Angler
Joined: Feb 2011
Posts: 2,116 |
I just went through this about a year ago.
Tried lots of things in an effort to save money, but ended up having to replace the powerhead.
Good Luck, hopefully it something much simpler in your case.
Last edited by sprigsss; 06/01/22 03:54 PM.
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382300
06/01/22 03:34 PM
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Joined: Aug 2003
Posts: 8,118
Ranger1
TFF Celebrity
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TFF Celebrity
Joined: Aug 2003
Posts: 8,118 |
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Re: 250 SHO smoking bad..... help
[Re: sprigsss]
#14382425
06/01/22 06:55 PM
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Joined: Sep 2008
Posts: 1,915
Tx Tree Grower
Extreme Angler
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Extreme Angler
Joined: Sep 2008
Posts: 1,915 |
I just went through this about a year ago.
Tried lots of things in an effort to save money, but ended up having to replace the powerhead.
Good Luck, hopefully it something much simpler in your case. What does a powerhead replacement on a 250 SHO cost these days?
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382452
06/01/22 07:38 PM
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Joined: Aug 2005
Posts: 301
LuvWater
Angler
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Angler
Joined: Aug 2005
Posts: 301 |
I just paid for a new power head on a 2011 250 SHO.........$16,000
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Re: 250 SHO smoking bad..... help
[Re: LuvWater]
#14382456
06/01/22 07:44 PM
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Joined: Aug 2003
Posts: 8,118
Ranger1
TFF Celebrity
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TFF Celebrity
Joined: Aug 2003
Posts: 8,118 |
I just paid for a new power head on a 2011 250 SHO.........$16,000 
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382510
06/01/22 08:59 PM
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Joined: Feb 2011
Posts: 2,116
sprigsss
Extreme Angler
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Extreme Angler
Joined: Feb 2011
Posts: 2,116 |
Worst part for me is I had just bought a new lower unit. When I got my boat back it was smoking the first time I took it out. Just progressively got worse.
At the time I replaced lower unit, I found a new 250 SHO at Boerne marine for I believe $23k. Was told my upper was fine, so replaced lower unit. Then 4 months later I was replacing power head.
I don't think it cost me quite $16,000, but it was close to it. All in all, I was wishing I bought that new SHO from Boerne, because when it came time to replace powerhead, there were no new motors available without a long wait.
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382536
06/01/22 09:20 PM
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Joined: May 2008
Posts: 371
blackhorse
Angler
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Angler
Joined: May 2008
Posts: 371 |
It will suck the joy right out of fishing not to mention your pocket book.
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Re: 250 SHO smoking bad..... help
[Re: Ranger1]
#14382620
06/01/22 10:42 PM
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Joined: Sep 2011
Posts: 6,065
Minner Bucket
TFF Celebrity
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TFF Celebrity
Joined: Sep 2011
Posts: 6,065 |
I just paid for a new power head on a 2011 250 SHO.........$16,000 Isn’t a whole new motor around 20K?
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Re: 250 SHO smoking bad..... help
[Re: Minner Bucket]
#14382624
06/01/22 10:45 PM
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Joined: Apr 2017
Posts: 14,908
tmd11111
TFF Guru
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TFF Guru
Joined: Apr 2017
Posts: 14,908 |
I just paid for a new power head on a 2011 250 SHO.........$16,000 Isn’t a whole new motor around 20K? Last few I've seen available have been listed for about $26k
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Re: 250 SHO smoking bad..... help
[Re: mcbassin]
#14382632
06/01/22 10:57 PM
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Joined: Mar 2016
Posts: 2,060
dk2429
Extreme Angler
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Extreme Angler
Joined: Mar 2016
Posts: 2,060 |
One of my biggest fears taking trips a long way away is having boat issues when you get there... Man that's gotta suck
Majek 22 Extreme/225 Optimax Pro XS hauled by a 2500HD Duramax
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