The other day when I fired up the Cub it was noticably smoking blue/grey out the stack. It has never smoked before that I ever noticed. What could cause this to start happening all of the sudden while just sitting? I don't use her much but I do start it up and run it every so often. It was supposedly overhauled not that many hours ago and has always purred like it too.
I am not sure where you live, but in cooler weather conditions the Cub will through out lots of condensate in the exhaust until it warms up. Make sure the engine is warmed up well and then check for smoke.
Joined: Sun Apr 18, 2010 6:22 am
Location: Hagerstown MD
Zip Code: 21742
Tractors Owned: 1955 F Cub (2) 1952 F Cub 1948 F Cub 2155 JD 216 JD
You need to get it warm/hot- Make it labor. It was designed to work and you won't hurt it.
They are like spoiled kids. If you don't make them mind, and do a little work, all they want to do is sit in front of the TV and get fat. They want all the cool clothes and the newest gadget, but find it impossible to make their bed.
I see a lot of this on the boat forums and folks like to blame ethanol and it's unique ability to attact moisture, eat away gaskets, and in some cases begin to break down in a relatively short amount of time. Any of that will create smoke. Only resolution is to Sea Foam the gas if it's going to sit or get ethanol free gas. I had some smoking issues and they've gone away. In addition to ethanol free gas, I also replaced the oil in the aircleaner and lowered the level. Coincidence? Perhaps... After rebuilding boat carbs twice in two years, I can't help but think there's something to the 'ethanol is evil' argument.
Yes, I have been going out of my way to buy, at least claimed to be, ethanol free gas and at extra expense. Coincidentally I also cleaned and changed oil in the air cleaner this afternoon wondering if it was effecting the mixture and burning too richly. The bottom of the bowl was pretty gooped up. I also ran some Seafoam through the gas tank...still smoking. I guess I should take Dale's advice and whip it's lazy butt back into shape with that four letter word, "work?"
Steve, the Seafoam itself will also make the engine smoke some as it cleans the carbon from the pistons and valves. You'll need to run that gas mix thru and add fresh gas before things clear up. Working it hard while using the Seafoam is best, don't expect it to clear up during this time.
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote. Ben Franklin
Joined: Sat Sep 08, 2007 3:49 pm
Location: WV. Ripley
Zip Code: 25271
eBay ID: yogiefisher
Tractors Owned: 37 John Deere A 63 Farmall Cub 53 Farmall Cub