I have been working through my motor trying to find why I lost compression on the rear cylinder. I posted on this forum and got some good advice but I am still searching for the problem. Originally I blew an oring and had water shooting out the rear of the motor. I opened the head and replaced the o-rings, still had poor compression in the rear (160 front 130 rear).
Now I have removed the head and cylinder jug to examine the piston rings and other components. I cannot see any obvious damage but when I looked down into the bottom where the crank is there is a fair amount of fluid (gas/oil) on the side that the cylinder failed, the front side is bone dry. Any thoughts or suggestions would be much appreciated. I am rather new to working on these motors but would really like to learn. If I have left out any key info please advise and I will supply, thank you.
![IMG_0768[1].jpg](https://www.x-h2o.com/data/attachments/140/140603-85a559e0e276714a9294f0ff8a2bfd3e.jpg "IMG_0768[1].jpg")
Now I have removed the head and cylinder jug to examine the piston rings and other components. I cannot see any obvious damage but when I looked down into the bottom where the crank is there is a fair amount of fluid (gas/oil) on the side that the cylinder failed, the front side is bone dry. Any thoughts or suggestions would be much appreciated. I am rather new to working on these motors but would really like to learn. If I have left out any key info please advise and I will supply, thank you.
