I have a little problem with my carburretor. He( ) is comming from a B14 (1983) engine, and it's a Weber 32 DIR 95.
I have 3 screws:
-The first is the "wealth" screw ( which control the proportion of petrol in the mixture).
-The second is the "slow motion"'s screw: it control the mechanical system of the lowest postion of the acceleration command.
-And the third screw is very mysterious. I belive it use to bring air befor the throttle valve and put it next the throttle valve. It is used when the engine is in slow motion.
But why there is two screw of slow motion. How can I regulat the carburretor.
I have already read a topic about the wealth secrew.
soory for th englisch...
froggy salutations
Last edited by Christophe_343 on 18 Nov 2009 10:00 pm, edited 1 time in total.
the idea is to first set the throttle positioning adjustment just barely touching the throttle mechanism, you can see this from the "rearview" side of the carb; then tune the idle with the idle adjustment screw to 800 rpm and set the mixture with the mixture adjustment screw
what's the engine code? B14.3S maybe?
and what are the specific symptons of you carb/engine problems
Yes it's a B14 3S form a DL. My problem is:
-I think my mixture is good, no problem on road, nice reaction, "candle ignition" are brown-black, I think a little bit too much riche, but the screw is dead and I'm waiting for an other.
First problem:
When I'm idle and I don't touch the throtle. One times it's very too much high, and one other times the engine stop. It's not a problem of engine's température.
Second problem (not very important):
When I push on the throttle in load (2st), from 0 to 30-50 % the engine have a big hole. But If I go to 100% of the throttle there is no problems.
I have recently "wash" my carburettor. I have seen no problem
Christophe_343 wrote: but the screw is dead and I'm waiting for an other.
the screw can feel dead if the sequence in adjustment is mixed, if you tune the idle only at the throttle positioning screw; the idle screw can end up in a "dead zone" where you don't notice any adjustment.
Christophe_343 wrote:
When I'm idle and I don't touch the throtle. One times it's very too much high, and one other times the engine stop. It's not a problem of engine's température.
have you checked the idle solenoid?
remove the blue/yellow wire from the solenoid, tap it against the solenoid connector with ignition on and if it's working properly you should hear it "click" if not, check if you have voltage on that wire with ignition on and remove the jet from the solenoid to see if the actuator is moving freely and bounces back outward due to the spring inside the solenoid.
Christophe_343 wrote:
When I push on the throttle in load (2st), from 0 to 30-50 % the engine have a big hole. But If I go to 100% of the throttle there is no problems.
that sound like there is a problem with the 2nd barrel of the carb, probably a blocked emulsion tube or a caught throttle valve overriching the mixture but that's strange since:
Christophe_343 wrote:I have recently "wash" my carburettor. I have seen no problem
if i reffer wash as checked/cleaned and so you've probably also taken the floaterchamber off the carb and checked the emulsion tubes?
i'm not a star at english too unfortunatly, especially in technical terms
I'm sory, that's the head of the screw wich is dead.
No I haven't check the idle solenoïd.Thanks for idea.
Yes I have check the emulsion tube, that's fine.
You've got the rather complex 'constant CO' system with two adjustments for idling. One is the throttle stop on the butterfly, and one is the 'idle bypass' screw. There is a procedure on how to set them up which I'll look up and then post back.
I understand better, thanks!
Okay, if I good understand this is a screw wich control the mixuture's idle?
I don't touch the srcrew before your explanation about the regulation.I think that's the better
pettaw wrote:You've got the rather complex 'constant CO' system with two adjustments for idling. One is the throttle stop on the butterfly, and one is the 'idle bypass' screw. There is a procedure on how to set them up which I'll look up and then post back.
) is comming from a B14 (1983) engine, and it's a Weber 32 DIR 95.
