Billgran wrote:
Those old motors were not environmentally friendly back then. They used
"stutter valves" to blow excess oil accumulated in the crankcase overboard.
At idle, they ran rich and much unburned fuel and oil were in the exhaust.
If the thermostat is not operating and allowing the cylinders to get up to
around 140 degrees, the fuel burn will be even more inefficient. The idle
needles are adjustable and if set too rich, will also allow more unburned
fuel into the water.

yah, this I knew. I think there were several reasons why it was like
this. Poor mixture, and I didn't set the carb right probably (it did
smell rich when it was running, I forgot to mention that. Mostly
because I just remembered it now)


So when you run the motor in a small environment, like a garbage can or feed
trough, the fuel and oil make a film on the water very quickly. This is
assuming that you don't have a leaking gearcase also.

Bill Grannis
service manager

thanks for the info/help. Is there a simple way to tell if I have a
leaking gearcase?