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Dec 30th, 2023
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 Low Compression on one cylinder
#13540894
04/30/20 10:48 PM
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Joined: Feb 2005
Posts: 59
plummer
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2005
Posts: 59 |
Have been told I have low compression on one cylinder on a 25HP four stroke Mercury. What could cause this and can I continue to run the motor. Three were at 135 and one at 90.
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Re: Low Compression on one cylinder
[Re: plummer]
#13540916
04/30/20 11:18 PM
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Joined: Apr 2017
Posts: 12,189
tmd11111
TFF Guru
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TFF Guru
Joined: Apr 2017
Posts: 12,189 |
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Re: Low Compression on one cylinder
[Re: tmd11111]
#13541003
05/01/20 12:42 AM
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Joined: Feb 2005
Posts: 59
plummer
OP
Outdoorsman
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OP
Outdoorsman
Joined: Feb 2005
Posts: 59 |
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Re: Low Compression on one cylinder
[Re: plummer]
#13557007
05/14/20 05:09 AM
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Joined: Dec 2014
Posts: 601
Larry Mosby
Pro Angler
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Pro Angler
Joined: Dec 2014
Posts: 601 |
Blown gasket, burnt valve, bad rings
Larry Mosby
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Re: Low Compression on one cylinder
[Re: plummer]
#13558604
05/15/20 12:51 PM
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Joined: Jan 2003
Posts: 4,012
texcajun
TFF Team Angler
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TFF Team Angler
Joined: Jan 2003
Posts: 4,012 |
Have been told I have low compression on one cylinder on a 25HP four stroke Mercury. What could cause this and can I continue to run the motor. Three were at 135 and one at 90. Not if you have any hope of rebuilding it.
2002 Scandy White, 2002 Yamaha 90
Point me towards the water!
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Re: Low Compression on one cylinder
[Re: plummer]
#13558616
05/15/20 01:02 PM
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Joined: Jul 2010
Posts: 1,351
boatman025
Extreme Angler
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Extreme Angler
Joined: Jul 2010
Posts: 1,351 |
We can do a leak down and possible tell you if it head issue.
Hughes Marine
3855 Osage Lane
Wylie ,Texas
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