Guru
Joined: 31/12/2016
Location: AustraliaPosts: 874
| Posted: 10:09am 26 Jan 2023 |
Looks like a stuck exhaust valve, usually they can get sticky and sometimes free up if wound over very fast with a fair bit of oil poured down the plug hole,
but a really stuck valve could be a different story.A good soak in oil might help free it up, unless there is some other damage, hopefully the valve seat is not out of place, if it has an insert.