rippinthewaves
Recruit
- Joined
- Aug 21, 2012
- Messages
- 4
The first time I took it out the engine sounded a solid alarm, knocked a little, and shut down. I inspected the impeller and replaced the corroded thermostat, suspecting an overheat and took it out again. Bogged, stuttered, slight knock as soon as I gave it WOT. Went home and found the negative cable was loose. Took it out a third time, got on plane for 10seconds, bogged, stuttered, alarmed, knocked, and shut down. Fired back up and had a consitent knock.
After reading up in the forums I performed a comression test with the engine at operating temperature. The cylinders tested the following; #1-100psi, #2- 129, #3-135, #4-144. After spraying some motor oil in cylinder number one, the psi jumped to 150. From what I have read this is indicative of failed piston rings. :facepalm: With a long handle screwdriver I can clearly hear the knocking toward the #1 piston head/rear engine.
Before I order parts and disassemble the engine, have I missed anything? Should I perform a leak down compression test to be sure? Could the carbureator rebuild be the cause of the failed rings? Could bad gas be the cause of the failed rings?
Thank you in advance for the help. I learned plenty of valubale knowledge by reading these forums for the last few weeks. Very enthused first time poster.
After reading up in the forums I performed a comression test with the engine at operating temperature. The cylinders tested the following; #1-100psi, #2- 129, #3-135, #4-144. After spraying some motor oil in cylinder number one, the psi jumped to 150. From what I have read this is indicative of failed piston rings. :facepalm: With a long handle screwdriver I can clearly hear the knocking toward the #1 piston head/rear engine.
Before I order parts and disassemble the engine, have I missed anything? Should I perform a leak down compression test to be sure? Could the carbureator rebuild be the cause of the failed rings? Could bad gas be the cause of the failed rings?
Thank you in advance for the help. I learned plenty of valubale knowledge by reading these forums for the last few weeks. Very enthused first time poster.