Colder weather is now upon us

One quick question,

I have a F134 with a Solex carb... now that the cold weather is upon us, on cold start, I have to let the engine warm up a considerable amount of time 1- 2 min. if I don't want to hear popping in the carb once I start driving + dead spots etc... I suspect the issue is the gas does not atomize well and puddle in the intake but I may be completely wrong on this. Run very well once it reach operating temperature.

Is there anything I can do with the carb adjustment to minimize the problem? Also, does the Carter have the same issue?

Jeep runs fine on hot weather with a 10-30 sec. warm up except for a slight hesitation on street corner.

 

I don't have the answers, but I have the questions! If manual choke--how much choke is necessary in warm weather and how much in cold weather.

Also, you mention in hot weather a 10-30 second warm up but slight hesitation on street corner--is that under steady accelerator or have you backed off and then found hesitation when returning acceleration?

--Someone who knows your carb will have to pick up on this .

 

The enricher as they call it for the solex is pull fully - no gas to start it - if it doesn't start then prime with the gas pedal once and then it usually start - keep it on the choke in cold weather until it can idle at half choke then let it warm up and wait.

In warm weather it's the same procedure but I take the choke off almost immediately.

I don't mind it running a bit rough (I get that's is not an EFI) but the popping in the carb bugs me the most. My old carbureted Honda use to have a hose from the exhaust manifold that led to the bottom of the air filter with a valve that let warmer air quickly down the throat of the carb in cold weather.

 

Quote--"I don't mind it running a bit rough (I get that's is not an EFI) but the popping in the carb bugs me the most."

"popping" --Possible considerations 1.) Intake leak (perhaps difficult to find) 2.) Use premium non-ethanol gasoline.

 

Right on the starting procedure with the Solex. Solex technically has no choke, but what it has serves the same purpose. Been some time but I used to rebuild a lot of carbs - I never was afraid of rebuilding any of them. Why? Because bottom line, they ALL do the same thing. My latest got-it-going 67 has a very similar issue as to what you describe and I can just tell what my trouble is. The driver side idle mix needle won't respond, it moves, just no engine change, so that idle circuit is plugged somewhere. Passenger side one I adjusted and even just that improved the hot idle. At high idle a carb is also drawing from the intermediate circuit since the throttle is cracked open. If an idle circuit, which operates alone ONLY at a completely closed throttle plate, is clogged, an intermediate circuit is likely to be also clogged or restricted. You should hear some of the neat misfires the 67 makes with the glasspack muffler on it's high idle. Once warmed up fully, one can barely tell there's a problem except in a first gear take off there's a stutter that I just throttle harder to escape.

How long has it been since the Solex had service, generally you drive the CJ all the time no?:?

 

The Solex is "new" < 1000 mile on it - but that doesn't really mean all that much for them - could be crud in there from the manufacturing process. I do have a spare with a rebuilt kit so I will follow your advice and rebuild my older unit and try that - I'll also try a tank of gas with no ethanol on the next fill up.

As far as driving the Jeep all the time - not quite - I did 2500 miles in the 2 years that I own the Jeep - I drive mostly in good weather - will also take it out in the winter but definitely won't drive it in the salty slush. Wife came with me yesterday after I put my Best Top back on - we must have had a good tail wind - I reached 60 miles per hour and not going downhill!!!

 

I have exactly the same question!

There is no solution.
With hot weather I don't need event to tear the Choke button, it starts well, I let the Hurricane become hot 1 or 2 minutes and it is OK.
For winter... I bought new spark plugs to be sure of them;

- I'll put premium fuel it it and maybe some additive.
- I have the idea to put a copper wire wrapped around the gas exit collector and wrap it around the carburetor.
There is no risk ? :?:? and it can have it hot.

What do you think of this?

 

The copper wire conduct the heat ... but the exhaust pipe goes very high in temp.
Is this you fear, the fuel could explode?

I can put the copper wire below, so it is less heating... like a radiator.