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Discussion Starter #1
I have a 1998 Evinrude 225 Ocean Pro that has been sitting for 2 years. I wanted to get it back in the water so I decided to do a compression test. I have 3 cylinders with 90, 2 cylinders with 88, and 1 cylinder with 59.
I de-carbed it with seafoam and lots of carbon came out, but no change in the compression.
My questions are, has this cylinder already failed? or can I run it as is? Can I repair just this cylinder? or would I be better off saving up and finder another motor?
The cylinder with the low compression is the Top on the Starboard Side.
I just don't know which way to go with this and need some direction.
:(
Thanks,
 

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Just go get a new engine. Never seen anyone get much out of a rebuild.
 

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Jaded Old Phart
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Discussion Starter #6
Read this, there's more. Excerpt from article.

"Generally, readings below 90 PSI for modern two-stroke outboards indicate a problem; most will produce cranking compression readings in the 90 to 105 PSI range, depending on the engine year, make, and model."

https://www.boatus.com/magazine/2016/april/checking-compression-on-an-outboard-engine.asp

Plus, how did you decarb it? Does it run?
I de-carbed it with seafoam in a gallon of gas.
It runs good on the muffs and starts as soon as you turn the key.
 

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Jaded Old Phart
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