When the idling speed is adjusted correctly, it should not increase the speed after some driving. Ensure the idling speed adjuster screw has the spring intact. The spring is to stop the idling screw from self loosening.
Ensure the accelerator cable has sufficient free travel.
Check and ensure the choke is fully opened. It can result in excessive black smoke and errratic idling.
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Wednesday, August 12th, 2015 AT 8:31 AM