White smoke

When I started it mid week I left a coffee can on the breather-stack for about 30 seconds before I remembered to remove it, so even though the 630 was running, it must have been gasping for air.

NOW - HERE IS THE ISSUE - it is bellowing white smoke today, and it wasn't doing this the last time I started it. I pulled one plug, and it was a bit oily. I am worried that by leaving the stack closed, the old engine found some new ways to get air, and in the process loosened some seals somewhere that is putting excess oil into the cylinder. I am not much of a mechanic, but I would be interested in some opinions about what caused the 630 to start smoking overnight.

Thanks in advance.

I can't believe I didn't catch that. I even opened the breather-can and looked for water or too much oil and noticed that the upper-screen was wet with oil, but it didn't occur to me that it would have enough suction to pull excess oil into the flow. I am still going to have to do some cleanup, but I feel better already.

I think I will invest in a breather-top and get rid of the coffee-can;-)

Many MANY thanks for the reply