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?
18 years ago