1986 Mercury 9.8 110 outboard

[Kissdude]

The recoil is taken off right now and will be able to figure that one out.
The motor. I put the flywheel nut on just to turn it and there is no kickback or anything but the pistons move up and down. Pistons look really oily. Is this maybe a bad ring problem?

 

[jimmbo]

Well the Block has a Transfer Port Cover on the Starboard side of the Block that can be taken off, and you can inspect the Rings, and determine if they have Spring Tension, if not, they are either Broke, or stuck. You can also see if the Piston has any Scoring

 

[Kissdude]

The piston rings are what give you compression correct? And if they’re bad could be why no compression. Would oily walls have anything to do with it?

 

[jimmbo]

Oily walls would likely indicate that Gas and Oil were getting into the Crankcase, or someone had poured a bunch of Oil into the Cylinders. If they are broken, or stuck either of those would make them unable to seal. However, a badly scored Cylinder Wall could also do the same

You say it was sitting for a long Time, how long have you owned it?

 

[racerone]

Oily walls is a good sign.----Just repair the recoil.-----Take compression test.----Stop overthinking.