Ok guys here are some photo's of my tears down of the main body.









I have removed everything i think.

What else is there now to clean the carb? just carb cleaner and compressed air right?

 

Some of those things have a screen behind the fuel inlet you might want to check. Might as well take the seats out too to clean behind them.

 

ok ok, done.


One question. I';ve heard about a check ball, i never found one. Where did it go? Nothing ever unexpectgedly fell out of this thing.

I'm about to sit it in my carb cleaner bucket. Stuff costed $20 at advance for a gallon of the stuff, so you can have the carb actually sit in the stuff.

 

Under the accelerator pump shooters.

 

there wasn't a ball at all, i had a pointy weight, thats it.

 

Then there'll probably be no ball, the pointy weight serves the same purpose.

 

cool, then my rebuild is going smoothly.

Nothing seems to be damaged. As the previous owner said. the carb was just replaced.

There was gunk in the float area, but carb cleaner soon made that no more. The comnpressed air method does seem to work very well. Only bad thing is i got the keyboard cleaner stuff. And after you use it for long enough, frost developes on the can. Cold stuff.

But it does seem to be going smoothly.

 

A spray can of carb cleaner with the straw in the nozzle works for clearing passages out too.

 

its a really nice carb.

i never knew carbs were so simple, and easy to work on. I dont know why i never switched before. Only problesm is really jet sizes, metering rod, spring strengths, and a few other things. Very simple.

 

That's one of the reasons for the enduring popularity of the AFB design, despite being 50 years old. Newer carbs, and carbs designed to meet emissions standards can be more complicated.

 

and i completely understand that.

Its a 50 year old design, that works the way it was meant to, for raw performance power.

I love the fact that now i wont have to worry about engine idle problems and stuff.

I do have one question however.

While starting i dont remember there ever being vacuum pressure, how does the carb know to apply fuel?

Or are you required to hit the throttle so the pump can apply its fuelk for initial startup?

 

Well, raw performance power by 1950s standards anyway.

There's a small amount of vacuum present in the manifold during cranking, which may be enough to start the car if the engine is already warm. If the engine is cold, closing the choke presents manifold vacuum to the mains to draw fuel from them as well as the idle discharge ports. Of course the fuel delivered by the pump shot helps on the initial start as well.

 

Oh yeah that was my next question. what does the darn choke look like.

All i have thats unknownj to me that i can hook a cable up to is a thing i found to be "fast idle arm" that is also related to the choke. But i am unable to find out how i am supposed to rig up the choke.


any photo's up close to edumacate me?

 

The choke is the plate across the primaries that you or someone else has removed in your pictures. It's actuated by the linkage on the right side of the carb.

 

Pick a number:

 

yup i knew it. My choke has been removed.

I went to pepboys and they had an edelbrock carb sitting out, and i lookedat it, and noticed that entirely different valve/plate there, and got home looked at mine. and it wasn't there. How do i deal without a choke? Is it much harder to start or what?

 

Not really, when the engine is cold you might need to play with the throttle a little to keep it running at first.

 

only reason i ask is because my ride on lawn mower is a 16 horse briggs and stratton.
And in order to start it cold the choke almost has to be pulled. IT doesn't seem todo anything without it pulled.


Will my car do the same or what?

 

Not really. Driveability for the first minute or so of operation might suffer, that's about it.

 

hmmm....

I guess there is one bit of a difference. A lawn mower doesn't exactly have fuel pressure. ITs a gravity feed. And well, the amount of fuel it gets while starting from gravity may affect that.