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When starting cold (has not run in a while, not necessarily cold outside) I have to baby the throttle to let it idle a while before I can further depress the peddle to go forward or backward. Once it gets going and warms up it runs well. Any ideas what might cause this?
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I just wanted to mention that for cold starts the choke is definitely required. Basically the choke helps enrich the fuel mixture by restricting airflow into the carburetor allowing more fuel to flow in when the engine is cold. This is particularly important for a proper cold start because a richer mixture helps the engine fire up more easily and run smoothly until it reaches its operating temperature. If you're not using the choke during cold starts, that could definitely be part of the problem.
If you're already using the choke and still experiencing the issue where the cart takes a while to warm up and you have to baby the throttle, there are a few potential causes to consider. One common issue could be a dirty or partially clogged carburetor. If the jets or passages are obstructed, it can restrict fuel flow making it difficult for the engine to run smoothly until it warms up and expands the components slightly. Aftermarket carburetors do not match the precise specifications or build quality of the originals which can lead to poor fuel delivery and other additional problems. So, if you can sonic-clean and restore the original carburetor, you’re likely to achieve better results than switching to an aftermarket part.
Another less likely possibility could be the fuel mixture being off due to a faulty fuel adjustment screw or an issue with the float inside the carburetor not functioning properly. If the float is stuck, it may not allow the proper amount of fuel to enter the carburetor leading to a lean mixture that struggles to keep the engine running until it warms up.
Finally, if there are any vacuum leaks around the intake manifold or carburetor gasket that could also cause rough running during cold starts. A vacuum leak allows unmetered air to enter the engine further complicating the fuel/air mixture and making it hard for the engine to idle properly until it warms up. Addressing these issues should help your cart start and run more smoothly. If you have any specific questions or need to request testing procedures feel free to ask! -
Keep in mind fuel quality. Small engine and outdoor power equipment say today’s fuels start to break down after 30 days. Ethanol is not our friend. And don’t store fuel in direct sunlight as sun starts the breakdown of fuel quicker. Modern gas is much like produce these daysComment
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