04-03-2020, 11:20 AM
A friend in university days used to run a Rover 16. This has a down-draught SU. After prolonged full throttle driving the piston would stick up and the engine would stall as soon as the speed dropped. A quick loosen of the holding screws fixed it and all was well.
Maybe yours is sticking. I think another test is to remove the piston and its housing spin the piston holding it horizontal. If it's touching the side it can be heard.
Maybe yours is sticking. I think another test is to remove the piston and its housing spin the piston holding it horizontal. If it's touching the side it can be heard.
Jim