How to Adjust an Air Fuel Mixture Screw

Download ArticleExplore this Articleparts1Accessing the Air Fuel Mixture Screw2Balancing the Fuel MixtureOther SectionsQuestions & AnswersThings You'll NeedRelated ArticlesReferencesCo-authored byHovig Manouchekian

Last Updated: May 18, 2020ReferencesApproved

Download ArticleX

How to Adjust an Air Fuel Mixture Screw

This article was co-authored by Hovig Manouchekian. Hovig Manouchekian is an Auto Repair and Design Specialist and the Manager of Funk Brothers Auto, a family-owned business operated since 1925. With over 30 years of experience in the automotive industry, Hovig specializes in the process of auto repair and maintenance. He is also very knowledgeable in common automotive issues and needs including engine repair, battery replacement, and windshield accessory and maintenance. Hovig's knowledge and hard work have contributed to Funk Brothers Auto winning Angie's List Super Service Award for five consecutive years.

wikiHow marks an article as reader-approved once it receives enough positive feedback. In this case, 86% of readers who voted found the article helpful, earning it our reader-approved status.

This article has been viewed 251,810 times.

An air fuel mixture screw is a special screw on an engine’s carburetor that controls how much air mixes with the fuel. Adjusting this screw changes how fast or slow an engine idles and how smoothly it runs. The basic process for adjusting an air fuel mixture screw is the same for all small engines, whether it’s on a car, motorcycle, or other type of engine. Make adjustments with the engine warmed up and running. Set the screw in the position where the engine idles most smoothly and doesn’t sound rough or irregular to balance the fuel mixture so that the engine has an ideal air fuel ratio.

Steps

Part 1Part 1 of 2:Accessing the Air Fuel Mixture Screw

Part 2Part 2 of 2:Balancing the Fuel Mixture

Community Q&A

SearchAdd New QuestionAsk a Question200 characters leftInclude your email address to get a message when this question is answered.Submit

You Might Also Like

How toDetermine Gear RatioHow toFind a Car Color CodeHow toTest a Temperature Sensor with a MultimeterHow toTest a Vehicle Speed Sensor with a MultimeterHow toSeal a Plastic Gas TankHow toStart Riding an ATVHow toStore an Electric BikeHow toGet on the Delta Standby ListHow toChange a Car Title AddressHow toClean an Abs SensorHow toReact if a Power Line Falls on Your CarHow toFix Sun Faded Car PaintHow toFill Gas in CanadaHow toClean an ATVAdvertisement

References

More References (1)

About This Article

HMCo-authored by:Hovig ManouchekianAuto Repair & Design SpecialistThis article was co-authored by Hovig Manouchekian. Hovig Manouchekian is an Auto Repair and Design Specialist and the Manager of Funk Brothers Auto, a family-owned business operated since 1925. With over 30 years of experience in the automotive industry, Hovig specializes in the process of auto repair and maintenance. He is also very knowledgeable in common automotive issues and needs including engine repair, battery replacement, and windshield accessory and maintenance. Hovig's knowledge and hard work have contributed to Funk Brothers Auto winning Angie's List Super Service Award for five consecutive years.This article has been viewed 251,810 times.71 votes - 86%Co-authors:2Updated: May 18, 2020Views: 251,810Categories: Cars & Other VehiclesIn other languagesEspañol:ajustar un tornillo de mezcla de aire y combustibleThanks to all authors for creating a page that has been read 251,810 times.

Reader Success Stories

More reader storiesHide reader storiesShare your story

Did this article help you?

Advertisement