Question about Motorcycles
Carburetors been cleaned, starts & runs ok with filter & air box off, when air box & filter are fitted idle slows & when idle is adjusted it is not progressive & revs up uncontrollably,both butterfly shafts are free & shutting ok.both slides & needles seem to be operating ok.when throttle is introduced it also is partially uncontrollable,also revs do not drop inline with throttle when shut off.When throttle stop is backed right off all appears ok but of course wont idle.Choke works ok & shuts off ok but does rev quite high on full choke.Throttle & cable are both free & adjusted correctly.
Posted by Anonymous on
Hi, Anonymous and the usual suspects are:
1. Extremely lean fuel mixture.
2. Dirt, rust, water, or ethanol sludge in the fuel system.
3. Sticky throttle cables.
4. Multiple carburetors not in synchronization.
5. TPS sensor out of adjustment or faulty.
6. Wrong spark plugs for the type of service.
7. Throttle bodies not in synchronization (FI)
8. Faulty O2 sensor.
9. Clogged, stuck, or faulty IAC valve.
10. Aftermarket components not compatible with ECM.
For more information about your issue please click on the blue links below. Good luck and have a wonderful day.
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Posted on Apr 11, 2017
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Posted on Jan 02, 2017
I have seen this before a few things to do too make sure. First take the air filter out and shine a light use your fingers to move the slides up and down I suspect the springs that go on the slide is not seated in center you can tell from the slide going halfway and hanging up. Next, the boots on the slides only go on 1 way there is a notch on the carbs for them. I would guess this would fix you up if not we can get deeper into it with air-fuel mix screw settings.good luck
Posted on Mar 25, 2009
You need to oil your cables first....They make a gadget to help you do this...it clamps around the end of the cable, and you spray oil into a provided hole for a spray nozzle tube...Then see if the cables are unstuck by turning the throttle grip back and forth for awhile....start it and see if that helped....if not you may need to replace the cable(s)...I doubt that the slide in the carb is hanging up...or valve.If this doesn't work notify me.
Posted on May 10, 2009
I have been working on my carb today,the pipe from the bottom of the carb should just run down by the bottom of the swinging arm,there should be another pipe from the pipe on the left side of the carb just above the fuel intake which also runs down to the swinging arm and connect to nothing.
Posted on May 30, 2009
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