Question about 1989 Honda CB 1

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89 honda cb1 400 four idling rough how do i adjust the carb vpo4 settings

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6ya6ya
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Posted on Jan 02, 2017

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polarcycle
  • 1392 Answers

SOURCE: suzuki gsxr750 slingshot 89 K just overhauled

You should be able to drill out the A/F caps on the mixture screws if they are still in place. It sounds like you still have a blocked pilot jet circuit though if it runs well at higher revs when the main jet takes over.

Posted on Jul 07, 2009

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  • 10 Answers

SOURCE: Fluid amounts forks cb1 1990

The best way to find this out is to use the honda service manual... It gives all the specs. you need!

Posted on Jun 14, 2009

  • 1 Answer

SOURCE: idle adjustment on 1970 honda 750 four

I have honda 754 and while it idles it goes t between 1000 rpm to 3000rpm . ,is this a vaccum problem and what is the remedy?

Posted on May 05, 2010

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1 Answer

I have a rough idle on my generator eu3000is and won't run my roof air on my RV


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check its voltage output and how much load you have on it when it has the rough idle
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Why is my atv Honda fourtrax 350 backfireing


it sounds like its starving for fuel, when it runs lean you will get backfires and if its running rough then it may be starving for fuel at idle. Try adjusting you mixture screw and see it the engine will smoot out. Your carb my be dirty and not allowing enough fuel through it.

Feb 21, 2015 | Honda Motorcycles

1 Answer

Sportster 1200 cc 2003 a/f adjustment


If motorcycle has set for more than 6 month with the new reformulated fuel, the carbs are probably plugged up and need cleaning. Also check for any broken, open, or otherwise damaged vacuum lines as they will also make it pop and spit. The inlet spigots that connect the carbs to the head also may be leaking and will case the same type of problems.

Mar 26, 2014 | 2006 Honda ANF125 Innova

1 Answer

89 corvette idles rough when warmed up


clean throttle body with carb cleaner

Jun 15, 2012 | 1989 Chevrolet Corvette

1 Answer

I have a 78 honda it has been sitting, won't idle


The stock pilot screw setting is one and one half turns. The usual problem for not idling is that the slow speed circuits in the carbs are still plugged up. Secondary cause is usually that the carbs are not in sync > The carb slides don't all move upward at exactly the same moment. If you haven't installed new spark plugs, do it. Soak the carbs in denatured alcohol after removing the slides and float bowls. Finish with spray carb cleaner and compressed air. Spray into all the drill holes, ( circuits ), in each carb. Install an in-line fuel filter to prevent trash from the gas tank getting into the carbs.

Jul 04, 2010 | Honda CBX 750 F Motorcycles

2 Answers

Idle adjustment on 1970 honda 750 four


the cb 400 has 4 carbs if its ticking over badly and "hunting" then the carbs need to be tuned first to do this you need the right tool you just cant do it by ear as its done on vacuum?? after that its an easy job to set it up, if its out of tune even just a little bit it well run like a dog with big flat spots in its throtel

Oct 23, 2009 | 1975 Honda Cb 400 F

1 Answer

Need spark plug gap. and carb setting


gap should be about .020 - Carb setting is adjusted while running - lo idle and hi - lo idle adjusted to the lowest RPM before it stalls or starts running rough, the hi is adjusted at full throttle for the smoothest / highest rpm

Jun 06, 2009 | Mantis 2-Cycle Tiller

1 Answer

89 accord always idles at 3000rpm


Either the carb is misadjusted, or you have a vacuum leak somewhere letting in unmetered air.

Jun 02, 2009 | 1989 Honda Accord 4 Door

1 Answer

Carbs cleaned but bike will not idle properly


The pilot jet controls the idle. Check your service manual for the jet location. Chances are the jet is plugged up by varnish. Count the number of turns as you turn the adjuster screw INWARD until it LIGHTLY seats. Now remove the adjuster screw. Clean the jet and then put the adjuster screw in and LIGHTLY seat it. Turn the adjuster out the same number of turns as originally counted. Don't seat the screw too tight because you can screw up the jet if you do. Remove the actual jet only if you must.

Please rate this answer. Thanks Shawn! Good descriptions :)

May 02, 2009 | 2001 Honda VT 600 C Shadow

1 Answer

Rough idle and low idle speed Is there way to adjust the idel speed other then cable tension


you can adjust your fuel to air mixture on the carb and this may help your idle situation

Apr 25, 2009 | 1984 Honda VF 1100 C

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