When i start my bike with the choke on it starts as normal, when it reaches 3k RPM i turn the choke off like normal, well now when i do it, the bike runs but it bogs down more and more as time goes and eventually just stalls, it gets to the point when it will only stay running if the choke is on, and if i start to roll the throttle back it still stalls unless i really crank on it.
i did do dry gas and new gas thinking maybe i had a bad batch of fuel, then i thought maybe i wasn't getting good compression, however it did backfire when i was playing with the choke.
does it sound like something might be clogged up, or a kink prehaps.
and also if i stand the bike up right of the kickstand it dies even with the choke on, a list of things but theres got to be a solution. hopefully its something stupid to fix.
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It sounds as if a throttle cable or choke cable is either sticking or badly routed . Most bikes rev high at cold start then the revs should decrease as the engine warms up. I would check the throttle and choke cables first make sure they lubricated and operate smoothly and especially with the throttle cable if you open it slowly does it return immediately you take your hand away. It should almost snap shut. I would also check out the pilot air screw in the carb these get clogged with debris from the petrol over time. Before you take the pilot air screw out turn it clockwise into the carb and note how many turns it takes until it stops (do not over tighten this screw) be very gentle when you do this. Check your user manual to see if the turns in you found match the turns out in the manual. Also make sure the tick over (idle) adjuster screw is set correctly your bike should idle at approx 1,200 to 1,300 RPM when hot. My Yamaha 125 is 1,300 RPM my Suzy 650 about the same.
It's an engine safety mechanism, to shut down the engine when rpm goes beyond 10K.Even you are travelling at 140Kmps rpm won't reach 10K in normal case.Probably you have to change vacuum piston kit to resolve the issue completely.
If the carb is adjusted correctly, the engine will not idle without the choke when cold. I will usually take at least 3 to 5 miles of riding to get the engine warm enough to idle by itself without the choke. If your bike is a full operating temperature, it should idle at about 1000 RPM. If it's idling higher than this, you need to slow it down a bit.
Remove the air filter cover and look at the top right side of the carb. You'll see a screw there . This is the throttle stop screw. Turn the screw counterclockwise to lower the idle speed to 1000 RPM or so. Blip the throttle and let it settle back to idle. Reset it if necessary. Once set, put the air cleaner cover hand on.
hi,i might be wrong,but the first place i would start looking is the carbs,there are two of them and it has all the symptoms of imbalanced carbs,if you have a set of carb balancers then the job is relatively easy,if not,then you will have to take it to a shop to get done,the adjustments on the carbs are very very fine,the difference between running perfect and not running well is about 1/50th of a turn on the balance adjuster screw,if the carbs have been tampered with or as is normally the case,as the bike ages and all the parts start to wear the carbs will go out of balance,and it will severely affect engine performance,get the carbs tuned up and i am pretty sure you will have a new feeling bike when you get it back..hope this helps...cheers
your bike has three different fuel delivery methods...choke , low speed or pilots in the old days, and main fuel rails or mains in the carb days. your choke or idle circuit is not working. on fuel injected bikes you have a relay which you need to get checked to see if it's a possible contributor. best to take to honda dealer and they can diagnose the problem. hope that helped a little sir.
On the carburetor, there is an idle knob. Make sure it is not set too high. This is normal during a cold start so make sure to adjust the idle knob back at 1,100 RPM after your engine is warmed up.
Also, make sure the choke system is clean and is free. Throttle cable should have an allowance of just about .8cm.
The engine idle may also be controlled with the thermostat connected to the grill fan. it will normally idle up to about 2,000 rpm when it senses that the engine is too hot but not 4,000.00 make sure this system is working well.
Offhand, yes this would be normal. The high idle is brought about by the auto choke whose purpose is to hasten the reaching of operating temperature of the engine. The fact that the idle RPM goes down after some time is a good indicator, it tells us that the auto choke is working.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.
no doubt this bike is running very lean at idle. Thats the way the EPA wants it. Im a harley mechanic and i used to work in a US dealer. all carb bikes at set up time had the carbs "readjusted". We drilled out the EPA plug and turned the idle air screw out and drilled out the pilot jet too. The bikes worked much better. we were at sea level too so the bikes were very lean from the factory. I can imagine that after the new legislation that came into force they are even leaner and require a full warm up to run properly. Warmed up means you put your hand on the motors head and its hot enought to have to jerk it away. this could take more than a couple minutes. and yes our "readjustment" was illegal. i advice you to do the same.