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left brake lowers idle speed at rest
Posted: Mon Aug 08, 2022 7:57 pm
by fmplatt@gmail.com
Hi I was curious if its normal for the idle speed to lower when the left brake lever is activated at rest. I recently replaced the auto bystarter and it now starts right up without having to rev it up. But if I let it warm up a few minutes in pretty warm weather, it still wants to stall when coming to the first stop light. I noticed today that the engine idle speed lowers, like its under some kind of load, when I grab the left brake lever at a stop light.
'00 Honda Elite 80
Re: left brake lowers idle speed at rest
Posted: Mon Aug 08, 2022 9:09 pm
by motormike
It is common...the electrical circuit is being strained when you apply the brake and the brake-light comes on. This tends to pull amperage and will reduce the current being supplied to the charging circuit. That's the best explanation I can offer, but again, not uncommon. Your battery may be getting old and requiring more current from the engines charging circuit, causing a slight strain. Make sure your throttle stop screw is set for an idle speed sufficient to keep the engine from dying when coming to a stop. Not sure about rpm's, but likely 1,200-1,400 will be good.
Re: left brake lowers idle speed at rest
Posted: Mon Aug 15, 2022 10:54 pm
by Wheelman-111
Greetings:
Honda specs are 1800 for idle speed on AF series 2-strokes. Check your rear pulley bearings - the ones that let the driven pulley free-wheel on the clutch shaft. If they're "sticky" it might cause the symptom you describe on the center stand.