Before you go to all that trouble make sure there’s an oil filter properly fitted and the metal sleeve is fitted in the front of the housing with an o-ring. Then put 4 litres of oil in it and see what happens. And make sure you undo the 10 mm oil gallery bolt on the side of the left hand cylinder to check oil flow.
Edited by chrisr, 24 November 2023 - 10:29 pm.