225 hp Mercury outboard

[DonV]

Originally Posted by jwclbi

Hello, can I ask what the compression on the cylinders is on that merc?

Here ya go, first time I've ever checked the compression on this engine.

Port
112/3
110
107/8

Starboard
108/9
110
115

The compression gauge is in 5# increments, I estimated when between the lines. 112/3 is right between the 110 and 115. Yeah, I was surprised with the numbers. One of the wholesalers told me anything at or below 90 is a no-no.