Why does my r1 start but shut off?

Jay Henderson

• 261 Answers
• Posted on Dec 07, 2008

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.

Murtaza Akberali Versi

• 767 Answers
• Posted on Feb 13, 2009

SOURCE: 2003 WR250 F - eng. won't idle down and carb starts to overflow

Hi Jwelden,
Have you checked the float level in the float chamber?
I guess you may have to reset the float pin adjustment, its allowing more gas to pass through thn required and thus the overflow!
Not bad too, when you are working on the float assembly take the opportunity to blow out the fuel line from petcock to the carburator via the seat for the float pin,any foreign particals there would stop the float pin to seal up and thus overflow.
Fit in an inline fuel filter , this will help keep out the dirt or whatever.
Hope this helps.

Knight (Yamaha Seca XJ750A 1981)

SOURCE: wr 200 power problems

Unhook exhaust pipe,check port for blockage. if it is clear try to rev up with pipe off.If exhust is clear you will need to check high side of carb. good luck

SOURCE: R1 start problem

I had the same problem. After throwing all kinds of money at it, like a new battery, new relay, checking the fuses and many other things. I finally took it to a great shop (M Racing in Glendora, CA) and they discovered it was the starter brushes. Now Yamaha sells a rebuild kit for the 06 R1 starters but it's on back order all the way to Japan. Turns out Yamaha Japan knows about this defect and word is it's going to take months before they start producing the rebuild kit again. I'm sure there will not be a "starter recall" as that would cost Yamaha way to much money which is what the worlds all about, right? Anyway, my starter was rebuilt by a mechanic that rebuilds starters and I haven't had no problems with it. Hope this helps and whatever you do, don't take your bike to Montclair Yamaha. Dealerships charge way to much money and don't get the service or quility of work we all deserve.
Be Safe!!!!

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.