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You gave little description of your problem. You didn't tell whether it was a cold- or hot-start problem or whether it was difficult to start or idled too roughly.
The choke valve needs to be closed when the engine is cold. Otherwise, a cold engine won't start with a wide-open choke. Likewise, a warm or hot engine won't start with a closed choke.
Let the engine cool for at least 4 hours or more. Remove the air-cleaner cover and look at the choke position. Pump the accelerator pedal two or four times. This should close the choke entirely and set the fast-idle cam.
Start the engine and look at the choke. It needs to remain closed when you first start (to provide the richest possible starting mixture) and then the choke breaker needs to open it slightly after 2 - 3 seconds (to provide the correct cold mixture). If it opens entirely, there is a problem with the choke opener. If it remains closed entirely, there is a problem with the choke breaker. If it remains closed entirely, the engine will run very roughly or even stall. If it opens fully, it will stall.
There are two diaphragms in the choke breaker. The first one opens the choke slightly after 2 - 3 seconds (only delayed by the plastic jet connected to the choke breaker with a vacuum hose that slows the vacuum passage) and the other one opens the choke further after a few minutes (controlled by TVSV). The choke opener (separate device) opens the choke fully (90 degrees) after full warm-up (controlled by TVSV).
Both the choke breaker and choke opener are controlled by the TVSV valve. If the TVSV valve is faulty, they will not operate correctly. If the choke opener is always opening the choke, disconnect the vacuum hose from the port labeled "M" on the TVSV and plug the port with a vacuum plug. This disables the choke opener as well as the EGR. Then see if the choke valve is still open.
Automatic choke (electric choke) housing/heater/spring hardly go bad and I don't suspect any problem in that part. If you have an adjustable version, you can try adjusting the cold-start mixture by turning it. If it's riveted (not adjustable), choke breaker can't be replaced unless you remove the rivets to take out the automatic-choke housing and then remove the choke breaker.
Choke breaker also has an adjustment screw and make sure that it's in place. Always cover this screw with adhesive silicone. Otherwise, it will fall and get lost, causing a large vacuum leak.
If you are still having problems, check your idle speed, fast-idle speed, float adjustment, and idle-mixture adjustment, as well as for vacuum leaks and improperly connected hoses.