I agree pretty much with what has been said.
But no one told you how to test the float needle.
With the bowl off, hold the carb and blow slowly into the gas inlet tube,
you can add a hose if you like, tastes better, while doing this, gently move
the float in and out to see if it will stop you blowing on it. Where it
stops you, is where it closes.
You can get a general idea where the float closes the valve by doing this.
If it doesn't close it, or closes it above it's parallel position, as if it
was in the operating position, you know it's bad.
Dirt in the seat or just plain misadjusted is common on these types of
As I said earlier, I changed my mind and decided to rebuild this
Lincoln SA-200's ignition and carb. I took some pictures
as they will tell me how to reassemble the carb, and for asking
questions below. It is my first gas engine rebuild ever, so I
apologize if my questions are stupid.
1. Compression. Measured 130, 135, 135, 137 on four cylinders. How
does it look?
2. Spark plugs. See above link for pictures of spark plugs. Do they
tell anything interesting? Two look my blacker than the other two.
3. Carb: I called some local carb shop and asked them about the carb
leaking fuel to the intake air filter. The guy told me that 9 times
out of 10 they look at them in this condition, they have to replace
them and something is not "seated", and it is not fixable. WTF? Is
4. I took the carb somewhat apart and put it in a gallon of carb
cleaner liquid that is made for soaking carburetors, with a little
basket. How long should I keep that stuff in it?
5. What exactly can make the carb needle not do its job, and let
excess of fuel into the intake?
Thanks guys, sorry for so many questions.