Chaps,
I'm new to running Petter M's. I have a 1930 5 HP which is a recent acquisition. It has a petrol head, a paraffin ring and a mixer/carburettor with a drain so it is set up to run on paraffin. It runs reasonably well on paraffin (after starting on petrol), but smokes a lot and misses a bit even when hot and under some load.
I've adjusted the ignition timing, (in accordance with the book) changed the spark plug and checked that the oil drip feed is set correctly but it still doesn't run as nicely as some I've seen on the rally field and smokes more than I do!.
The question is: is the mixture of a petrol head and a paraffin ring causing the problem? Would I be better running on petrol and taking the de-compression ring out or maybe running a mixture of petrol and paraffin - what do you think?
Regards
MARK