What are the symptoms of lean idle on a motorcycle?
Spark plugs are clean – No residue. Insulator may be white. Runs better at higher altitudes – AFR becomes normalized due to reduced atmospheric pressure allowing fuel into the venturi easier. Backfires – Popping on deceleration for a lean idle circuit or backfires in general.
What causes a motorcycle to stall at idle?
Extremely lean motors can also stall out completely when given some light throttle. Another sign of lean running is the “hunting idle” where the motorcycle revs up randomly, changes RPMs, or takes forever to come down to idle.
Why is my Yamaha outboard engine not working?
Be sure to check this fitting if you’re having outboard engine problems. Photo courtesy of Sea Dog. Fuel fittings, such as this one, can corrode and clog up, causing significant performance issues in outboard engines. Photo courtesy of Yamaha.
What causes a car to have a rough idle?
This can result in slow or sluggish acceleration or a jerking motion while pressing down on the accelerator. A rough or uneven idle can be an indicator of an engine that is misfiring. The air/fuel mixture is disrupted which can cause the engine to jump up and down.
What to do if your choke is stuck on a motorcycle?
A Choke that is stuck or not turned off. Ensuring proper cable routing so that you can turn the handlebars all the way to the left and all the way to right without opening the choke when doing so is an essential test after installing the carbs and after reconnecting the choke cable. Ensure it doesn’t bind up and pull the choke open.
What causes engine to run hot on lean idle circuit?
Backfires – Popping on deceleration for a lean idle circuit or backfires in general. Runs on choke – The vehicle may run on choke when it’s warm but stalls if the choke is turned off. Engine runs hot – Due to more oxygen than fuel combustion temperatures are hotter reflecting on a temp gauge.
Do you have to adjust the idle cam on an electric choke?
Because the fast idle camis synchronized to the choke blade position when the choke blade has beenopened by the pulloff-changing one adjustment may mean you have to re-adjustthe other. Of course, this doesn’t apply to Demon’s electricchokes!
Can you use a choke on a cold engine?
Keep inmind that a cold engine will have a faster idle speed; and therefore generatesmore vacuum than at curb idle. If youhave enough vacuum to operate the choke pull-off, you should be able to use anautomatic choke on your engine. You’re using winter-blended fuelif you’re in a climate cold enough to require it.
What’s the worst part of adjusting a choke?
The worst part of adjusting the choke is that only baselineadjustments can be made in heated comfort.Baseline adjustments will get you close.Maybe even “close enough”.
When does an electric choke won’t work?
An electric choke won’t workproperly if the battery isn’t being properly charged. Be aware that there are thermostaticallycontrolled voltage-reducing switches that can be mounted on the engine; theyregulate choke coil heater voltage based on engine temperature.