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post #1 of 7 Old 05-24-2014, 06:51 AM Thread Starter
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KLR suddenly missing

I hope you guys can point me in the right direction to fix my problem. I have an 08 klr with 8400 miles, new plug 600 miles ago. A couple of days ago it suddenly started missing, back firing when the throttle is advanced, no power. It would rev without a load but wouldn't go over 3000 rpm or so under load with top speed of maybe thirty.

It sounds like it could be timing to me but I wanted some advice. What do you think? Where do I look?

Thanks all
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post #2 of 7 Old 05-24-2014, 07:44 PM
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This is a tough one for a long distance diagnosis... The only thing I could tell you for certain is that it's not timing. More than likely a fuel or carb issue. But really, without a lot more info or actually seeing it in person it's just guessing...

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post #3 of 7 Old 05-25-2014, 05:52 AM Thread Starter
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Thanks for the reply. Another friend had suggestion the carb and that is probably the easiest place to start.

I have to do something soon. I am missing too many nice days!
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post #4 of 7 Old 05-25-2014, 06:31 AM
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That's what I would guess as well. One thing worth trying, especially if the bike has been sitting for a while is to drain the carb bowl. If it's been sitting for a longer period I would try draining the tank and bowl and put fresh fuel in. You could try putting some Seafoam in the gas as well, some people swear by it although I personally haven't had much luck with it. Lol

If you've got fresh clean fuel and you've drained the bowl and it's still running crappy I would check to make sure your vacuum petcock is working properly. If it is then you probably have a gunked up jet. It only takes a little piece of crud to plug a jet.

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post #5 of 7 Old 05-25-2014, 12:39 PM Thread Starter
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Thanks, I'll check as soon as the race is over!
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post #6 of 7 Old 05-25-2014, 04:50 PM
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Same thing happened to me once wen I was three hours away from home on a Sunday. All shops near me were closed, so I had no choice but to limp it home at about 35-40mph. About an hour into the ride home, it started sputtering real bad, I thought it was done for, then suddenly full power came on and I nearly came off the bike. Bike rode fine all the way home and it hasn't happened since. That was two years ago. YMMV, but I'm thinking a clogged jet, same as has been mentioned already.
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post #7 of 7 Old 05-25-2014, 05:28 PM
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Quote:
Originally Posted by 650Stew View Post
That's what I would guess as well. One thing worth trying, especially if the bike has been sitting for a while is to drain the carb bowl. If it's been sitting for a longer period I would try draining the tank and bowl and put fresh fuel in. You could try putting some Seafoam in the gas as well, some people swear by it although I personally haven't had much luck with it. Lol

If you've got fresh clean fuel and you've drained the bowl and it's still running crappy I would check to make sure your vacuum petcock is working properly. If it is then you probably have a gunked up jet. It only takes a little piece of crud to plug a jet.
+1 - Seafoam is magic. And easy. And pretty cheap. It's my go to for this kind of thing. Just dump a whole can in the gas tank. I've seen it do AMAZING things, including bringing my old Honda back to life.




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