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How do I adjust the fuel mixture on a 1980 Honda civic wagon? Keihin carb.its a little sluggish when accelerating

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  • Honda Expert
  • 386 Answers

That could be the pump jet, or the main jet, not the mixture.

Posted on Apr 14, 2017

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6ya6ya
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Posted on Jan 02, 2017

SOURCE: kawasaki mower engine

Likely first step, check that air filter is clean.

Posted on Sep 03, 2008

motor1258
  • 6674 Answers

SOURCE: I don't know where the air/fuel mixture screw is on my carb

There should be one screw (I'm assuming it's the Carter YF carburetor 1 barrel) that's by itself away from linkages etc, more to center at base of carb where it meets manifold, that is angled approx 45 degrees going in to base. That should be your mixture screw. What symptoms are you experiencing anyway?

Posted on Apr 04, 2009

  • 1 Answer

SOURCE: looking for the air fuel mixture screws on carb any help?

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Posted on Apr 09, 2009

Mr BrokRench
  • 1623 Answers

SOURCE: honda shadow vt600 dumping fuel into the carbs

Hello ddsaul2...If it's only been a day since the shop adjusted the carbs. you need to return it to them and make them do it right.
Sounds like a float valve is stuck and not closeing.They may have cracked a seat... There could be a pin hole in one of the floats causeing it to fill up with gas and sink. You can check and make sure all the vacuum lines are connected and possibly GENTLY tap on the carb fuel bowls to see if the float might be stuck alll the way down. Personally...if i paid for a carb tune i'd make them fix it. Surely they gurantee their work.
Good luck...i hope this helps

Posted on May 30, 2009

  • 3567 Answers

SOURCE: Hyosun Scooter Carb Adjustments

Very good thought process on the adjustments. The throttle screw sets the idle speed and the air screw sets the fuel mix at idle speed. The stock setting is 1.5 turns outward. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward.

From this point you adjust the idle speed then adjust the air screw for fastest idle speed at that throttle screw setting. If the idle speed becomes faster than desired after adjustment, just reset the throttle screw and then reset the air screw.

A “very helpful” rating for this answer? Thanks!

Posted on Jun 27, 2009

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