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?

"Blazer Fan Dan" wrote in message
oups.com...



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


Pull the bottom drain plug and see if only oil comes out, or if it looks
like a milkshake or plain water is there.

Bill Grannis
service manager

Billgran wrote:
"Blazer Fan Dan" wrote in message
oups.com...



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


Pull the bottom drain plug and see if only oil comes out, or if it looks
like a milkshake or plain water is there.

Bill Grannis
service manager

I know when I drained it originally, the color was darkish brown/black.
I haven't done it since. I do know what to look for, as the older
johnson has a greyish color to it.

[This followup was posted to rec.boats and a copy was sent to the cited
author.]

In article .com,
says...

Billgran wrote:
"Blazer Fan Dan" wrote in message
oups.com...



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


Pull the bottom drain plug and see if only oil comes out, or if it looks
like a milkshake or plain water is there.

Bill Grannis
service manager

I know when I drained it originally, the color was darkish brown/black.
I haven't done it since. I do know what to look for, as the older
johnson has a greyish color to it.




While black isn't a great color for oil it's probably better then grey
which is usually the results of water and oil being whipped into an
emulsion and water isn't a desirable engine/gear case lubrication
additive

--
Mike G.
Heirloom Woods

www.heirloom-woods.net

black is bad. it means worn out oil with carbon particles (abrasive)
in suspension.

wrote:
black is bad. it means worn out oil with carbon particles (abrasive)
in suspension.

does it matter that it stayed in the motor for 18+ years? (and I might
be remembering it a little incorrectly. I'm going to drain it later
today, to see how it looks)