Solex carb help

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Dirkhuman
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Solex carb help

Post by Dirkhuman » Wed May 02, 2018 4:45 pm

Hi guys i have a 2l cj moter but my main carb is running hot and my other carb is runing smooth cold.

I have a salex 32/34 pdsit -3 carbs on.

Bith main is 132.5
Airs are 140
Ideal 55
Neadle and seat are 1.2 on the main carb and 1.5 on the other one.

The main carb is running hot im not sure why. I can get is colder and it has a black smoke telling me its rich. Anybody tell me why or what it could be



Dawie
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Re: Solex carb help

Post by Dawie » Wed May 02, 2018 4:51 pm

Check jour float levels and make sure electromagnetic idle jets are not loose.

One possibility could be a leaking float that took in a bit of fuel. Are the plugs on one side black?
Do'nt assume anything- (While doing fault-finding).
"Things should be as simple as possible, BUT NO SIMPLER THAN THAT."
"If something can go wrong, it will go wrong" (Murphy's law).

Dirkhuman
Drip
Posts: 23
Joined: Wed May 02, 2018 10:26 am
What model do you have?: Beach buggy
Location: Hermanus
Flag: South Africa

Re: Solex carb help

Post by Dirkhuman » Wed May 02, 2018 5:10 pm

Yes black plugs and floats are good. But like i said that carb has a 1.2 neadle and seat and the other 1.5. But iss the yetting right? I know on the type 3 they had mix match jets in.

Dirkhuman
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Re: Solex carb help

Post by Dirkhuman » Wed May 02, 2018 5:24 pm

Ill space the float out more but its not runjing shit its runs great but the main carb is runing hot. Refs clean pulls like a dream. Just with the trumpets the main carbs side gas is hot

Dawie
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Re: Solex carb help

Post by Dawie » Wed May 02, 2018 6:57 pm

Both sides must have 1.2mm needle+ seat. Fuel pressure is critical with those tiny-float carbs. Most electrical fuel pumps have wat too much pressure so it forces fuel past the needle + seats.

Jetting is correct only if you use the standard central air cleaner setup with it's long intake runners. The long runners reacts with those carbs at full throttle to have full load mixture enrichment.
If different individual aircleaners are used, a drastic re-jetting is necessary to prevent loss of power and overheating.
Is this engine in your beach buggy?
Do'nt assume anything- (While doing fault-finding).
"Things should be as simple as possible, BUT NO SIMPLER THAN THAT."
"If something can go wrong, it will go wrong" (Murphy's law).

Dirkhuman
Drip
Posts: 23
Joined: Wed May 02, 2018 10:26 am
What model do you have?: Beach buggy
Location: Hermanus
Flag: South Africa

Re: Solex carb help

Post by Dirkhuman » Wed May 02, 2018 7:12 pm

Yes its in my biggy and i also think the pump is to strong. But i do t have the aircleaner i have to smaal ones so how to i rejet it? Can u give advice? I think the float on the left is over running just so that it does not make the plugs wet to miss

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