You haven't given enough info for us to really help you.

So, you previously cleaned the fuel system. Got that.

Have you tuned it up? ..... ever? If not, that would be a good place to start.

Help us out. What have you checked/tried?

Well to me it sounds like bad condenser or maybe pitted points. I have found that about 60% of most peoples carburetor issues are electrical.

I agree, but wasn't ready to place my money on a bad condenser just yet. I do think you are correct though, that's where I'm leaning. :beerchug:

Interesting side note. My 1211 went and got from my dad was popping and miss firing running like crap. Has spark checked timing all good. Went to unbolt the condenser and the wire fell out of it! Put new one and runs like a top! Had another strange occurance the other day with my 1200 I'll have to post that tomorrow.

I checked the points and changed the spark plug. Like i said it ran great up until the blades locked up and it stalled out. As soon as this happened was when it started sputtering and back firing and then die.

Your not the first to experience this, the condenser wire fell out of my sons 149
he had chased that gremlin half a season.:bigthink:

I have found that 62% of people posting answers don't even bother to read the initial question in it's entirety. I have also found that 90% of all statistics are made up on the spot :biggrin2:

Seriously, the OP indicated the engine issues started immediately after the engine stalled due to a clogged deck. How would a stalled engine cause the condenser to suddenly go bad or the points to suddenly become pitted :Huh:

Because the condenser wire possibly was broken, making a intermittent connection and the sudden jerk/movement of deck hanging up could dislodged the wire.
In my sons case, he decided to remove the condenser to bring it to me for testing on my 75 year old vacuum tube condenser tester, and thus found the wire broken off only sticking in the hole in the condenser.
As far as the points going bad, it is usually a gradual process or something got disturbed by an incident.
We can only guess.

I read the posting. An engine that runs good at low idle but starts sputtering as the engine revs often has a bad condenser. It could be alot of things with the amount of info given.

And I have found about 50 percent of people that hang around boards do not offer any usable help at all and just go around being a wise acre. So guru what do you suggest? A clogged deck moved the high idle screw? I am just trying to help the guy, what are you trying to do?

The 60% number was an estimate of the times people bring me a bad running engine wanting carb work and there problem many times is electrical. Everyone hears an engine sputter and immediately go straight to the carb. He said he already cleaned the carb and was running fine, and rechecked it. Im just using the info at hand and yes I read well above 3rd grade level.

Here is a picture of my own engine. She don't sputter. :^)
https://imagizer.imageshack.us/v2/72...538/Eyc66r.jpg

No need to get emotional sir. I am simply stating the obvious, since it has been established that the clogged deck caused the engine to immediately go from running well to not running well, and your hypothesis is a bad condenser, the logical deduction would be that the clogged deck caused the condenser to go from good to bad. I am simply asking, how did the stalled engine cause the condenser to go bad?

I think ol'George posted a resonable explanation for that.