24-10-2021, 11:19 AM
I am submitting this for a friend who has a problem concerning a 1928 Chummy which he has owned for many years.
It was running well until an ignition problem (almost certainly unconnected with the current issue) grounded it. While he was testing solutions to that,the engine suddenly developed an intermittent knock at around 1500 rpm plus which had never been evident before. The knock was not affected by pushing the clutch pedal – so probably it is not flywheel related. He then noticed that the engine was stiff on the handle at certain points of rotation. He has since removed the head and sump and found nothing amiss.
Any ideas please as to what this could be about ?
It was running well until an ignition problem (almost certainly unconnected with the current issue) grounded it. While he was testing solutions to that,the engine suddenly developed an intermittent knock at around 1500 rpm plus which had never been evident before. The knock was not affected by pushing the clutch pedal – so probably it is not flywheel related. He then noticed that the engine was stiff on the handle at certain points of rotation. He has since removed the head and sump and found nothing amiss.
Any ideas please as to what this could be about ?