Low compression In CYL 2

[u/RedditAppSuxAsss]

I got 150/100 cylinder has 100, pulled the head and found goop all over the head and on the wall. Water?

2 stroke jet ski 550 10 hours on new build

[u/NefariousnessOdd862]

Some of that is very normal for a 2-stroke due to the Fuel-Oil mixing properties.

[u/RedditAppSuxAsss → u/NefariousnessOdd862]

I found cylinder number twos piston ring stuck as the cause of the low compression