When starting my yz426f i pull the cold start choke bike starts after a few times but it doesnt rev high as my mates one it sounds like a normal bike idling and when i close the cold start choke bike just cuts off , i thinks idle is set wrong ( very low) is there any method to set it right?? i normaly have to ride the bike all the time with choke open
Minha yz426f quando vou de terceira marcha devagar mas quando eu acelero a fundo ela engasga , mas ? so de terceira marcha de rewsto nao faz isso
SOURCE: motor bike wont rev above idle weth choke on
This to me sounds like you need a carb cleaning. If you have let the bike sit for an extended time the carberators maybe clogged or gummed up. This has to do with the new gas that is out there now. It is cheap and with the introduction of Ethanol alcohol now it is even worse on being stable for long periods of time. I have seen fuel go bad in as little as 3 weeks.. One quick check you can do is open you fuel tank and smell the fuel. IF it smells like varnish it is probably bad. You can drain the tank and add new fuel and that should solve your problem. Keep in mind, that the carbs need to be drained as well to get the old fuel out of there also. Make sure you have a battery charger going when you start crankin that puppy, because you will need lots of extra juice to get that baby to fire up. If it is starting now and runs on choke, that means your idle jets are clogged. Best repair is to remove carbs and clean idle jet. Unless it is fuel injected.
Let me know how that goes and we can proceed from this point. I am a certified mechanic from MMI as well as a HDTV GURU. Smiles. have a good one.
SOURCE: bike idles, but with a little throttle it jumps to high rev and wont come back down to idle
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.
SOURCE: My 9 month old Yamaha YZF-R125 has been cutting
Sounds like you have either got water in the system or poor connections.
You can use something like dielectric grease on each connector. It is a bit of a pain having to open and close each connector on your bike, but once you've done it, you shouldn't need to do it again for a long, long time.
SOURCE: Engine cuts out with clutch engaged.
is your bjke water cooled could have aproblem with that-its gettin hot-if air cooled carb may neede cleaning. the clutch is ok but indicates to me that that carb needs a low speed jet adjust also-do u have a clymer manual!!
SOURCE: Yamaha DT 125 1986 - High Revs when idling
There have an air leak between the carb and the cylinder and/or the head and cylinder. Old hard / cracked rubber fittings and O rings are usually the problem. When extra air gets into the system it leans the fuel mix and the high idle is the result. It also means the engine runs hotter. Also, cracked or broken reeds can be a source.
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