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Re: rough idling and choke
The only thing that can cause this is maybe you have a bad planium gasket but before changing this you could also have gotten some bad gas cause most gas have 12% water or more so try STP gas treatment first
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Sounds like a automatic choke sticking....Take the air duct loose from carb..While accelerating engine spray bottle throttle spray in.....as the car tries to die...stop spraying...Repeat 3 or 4 times.....It will clean your injectors. Runs alot better...Remember....bottle throttle spray...not carborator spray
i use over haul carburetors.if idle speed screw too low engine wont start.if engine cold automatic choke need to be closed slowly open as engine warm up.if engine cold automatic choke need adjusting or fixed or if choke remain closed when engine hot vechicle will not start most time automatic thermostatic spring goes bad causing choke problems.
chk/test yr plugs also. If it starts to break down then chk soliniod & coil as u may be getting the start of a bigger problem. yr symptoms r showing signs of an elecrical problem. rough warm ups r the signs. c/be choke sensor also causing roughness..
That would be your engine "choke" functioning. It's not a problem. The choke engages when engine is cold and shoots extra fuel to the cylinders to idle the engine up especially in cold with. Once the engine has sufficiently warmed up, the engine will idle back down.
the choke has 3 screws to adjust the unit,the choke itself will normaly be siezed inside at the age.With a warm engine, loosen the 3 screws and turn the choke untill the idle drops.
or as i did it-with a cold engine, remove the airffilter and with the 3 screws loose on the choke press the accelerator pedal just over half so the choke is engaged and the looking inside the filter housing adjust the choke flap by turning the choke housing until the flap is 3/4 closed and tighten slightly and start the car.Do remember to check your distributor timing whith a warm engine and make sure the sparkplugs and airfilter are okay as each upsets the other.
If it's carburetor & has automatic choke, then there is probably a screw at side of carb, by step cam that moves with choke . Back it of a little at a time until you get desired cold idle speed. Make sure you turn step cam to setting it would normally be when cold, and choke on, then turn screw out to lower rpm's. Look for a little rod from choke shaft, down to base or side of carb area, to step cam.
Hi ..... This sounds as if it's fitted with an automatic choke, as long as the revs drop when it's warm there is nothing to worry about. The indication when these start to go wrong is that the car won't start when cold ................ even then any decent mechanic can fit a normal/manual choke.