Anybody Know How To Lean Out An Amazon Carb For The F134

I've managed to put about 150 miles on the project Jeep so far. Running fairly well. Hope to do another compression test shortly as it was a little low in the two center pistons that the previous owner had to bang loose to unseize it. Most of the oil smoking has disappeared though you do occasionally get a puff or two after sitting at a light. It is def. running a little on the rich side of things. PO had put on an amazon carb like this one and after looking at it for a while I don't see any method to lean it out. Granted I'm much more familiar with Amals or more modern Japanese bike carbs but hoping someone has played with one of these and can chime in with some advice on leaning it out a bit. Tomorrow is pulling the ebrake and checking the shoes and again playing with wiring to try to get the one brake light to again fire. Seems it stopped again. Thanks. Enjoying the Jeep, perfect addition. The goats love riding in the back to go for walks!

https://www.amazon.com/GXYWADY-1-Ba...-20-----15290------&vehicleName=1965+Jeep+CJ5

 

A harsh answer but chuck it in the garbage because that is what it is .the screw in the bae is the mixture screw try that .

 

Rich where?
The idle mixture screw adjusts, well, the idle.
The main and enrichment circuits employ a jet and stepped rod. Replacing the jet effects both circuits. If there are replacement rods available, they should be available with different steps to adjust either circuit.
Digging into my memory, there is a rod adjustment that will bring on the enrichment circuit either earlier or later.

 

In all due time, the original is quite roached so it will get attention over the winter to see if it is able to be rebuilt.

 

I would say it is pretty much throughout the range but mostly 1/2-3/4 throttle seems the worst. WOT seems the best so the jetting seems about right from the limited driving I've done. Don't have a clue who made the thing as there aren't any markings on it. Would have thought there might be an adjustment into the needle or rod like an old amal but that is maybe just wishful thinking

 

That’s a Solex knockoff. You could try getting jets/parts for a Solex; you might get lucky, depending how closely they copied the original. I’ve been running a Solex carb on my 3b for 27 years without issue.

 

Dis regard my advice on the stepped rod and jet. For some reason I had it in my head you were running a YF.
I'm somewhat familiar with Solex through air cooled engines, but not on CJ's.
Might try this
https://willysjeepforum.kaiserwillys.com/showthread.php?938-Solex-Carburetor-Tips-and-Info

 

Honestly, you're fighting an uphill battle.............. You would be better off with a genuine Solex or rebuilt Carter YF. A carb is simply a precision, controlled fuel leak, device. It meters and controls the amount of fuel and air per vacuum to ensure the correct atomization into the combustion chamber.
Most likely the circuits and the jets for the Chinese copy are not exact tolerances, thus you're unable to get the ideal mixture dialed in. With that said, you could possibly make due for now, by replacing all the jets with genuine Solex as they'll be far more accurately drilled for the correct mixture.

If you have the funds, and originality matters, Scout Pilot can set you up with a properly rebuilt YF. If originality is unimportant, and you have the funds, Vintage Jeeper can set you up with a Weber 32/36 which is night and day difference in performance. It really depends on your wants, needs and budget.

Also, since the FSM (Factory Service Manual) called for long obsolete 80 octane, if it's just a tad bit rich, you may be able to dial in a little more timing, not the 5* called for, and .05 more gap on the plugs (the Champion JC8 is a tad shy of stick out into the combustion chamber, try Champion L86C). More so with E-10, but I have found the Hurricane runs best with non ethanol. It's something "for free" to try.

 

Yeah, you get what you pay for, and that cheap Solex copy from Amazon is probably not going to be satisfactory.

I agree you would be better off with a properly rebuilt YF. If you do it yourself buy a quality kit with materials that stand up to modern fuels.

I have some YF cores if you decide to rebuild one, and want one better than the one you describe as being "quite roached".

 

You're going to need an inline fuel pressure regulator for the SOLEX. And it'll have to probably be turned down lower than you think. I have a solex from the previous owner but I"m in the proces of rebuilding the YF. I have the MR Gasket branded version of this type of fuel pressure regulator and I have mine set to 1.5 or 2psi on a L134. It originally was set for 3 or4 when I first got the Jeep. Turning it down to 1.5 or 2 fixed a lot of the fueling issues I was having.

https://www.amazon.com/Regulator-Re...-7-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9tdGY&psc=1

 

I actually have 2 others that came with the spare engine I bought. Both are YF that the PO said he couldn't get to not run rich with. Haven't looked at em since bringing them home as we just moved and am trying to live with a one car garage in the woods with 5 cars , 4 motorcycles and all my tools in boxes until the big garage gets built. Aside from running on the rich side at mid throttle the thing actually isn't bad probably even livable for most people. If I would just full throttle it the thing seems quite spot on. Gonna try a regulator for now to see if that helps as Downs suggested.

 

Weber 32/36

 

This is probably the easiest solution for you. The pressure regulator is 1000% needed with any version of a solex on the f134. Also, You may try double checking your timing before setting the idle on your carb. could be a compounded issue.

 

Ive had experience with 2 Chinese carbs one was a Mikuni copy on a friends 4 wheeler that the threads the mixture screws went into were so sloppy you flat out couldn't set it, the second one is on my farmall Cub and it has been awesome once it was set I haven't had to touch it. The only thing I noticed was with the mixture adjustment a tiny ajdustment makes a huge difference tweak it and try it and repeat until you gey it right