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Cbr f3 600

  #1  
Old 05-22-2018, 07:53 PM
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I have this 98 Smokin joe; thing was laid up for a bit, took carbs off and cleaned, and put back together, thing started no problem. Three weeks later, now it wonít start. Took carbs off, cleaned again, thing still wonít start. I donít get how three weeks ago it started no issues, I move it to part of shed for three weeks and now nothing. Cleaned carbs again, checked plugs, all good! So whatís going on? I changed fuel filter, checked pump, still canít get it going, any help? Any ideas?
 
  #2  
Old 05-22-2018, 07:57 PM
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check the kill switch? i've been bitten by that more than once.
 
  #3  
Old 05-22-2018, 08:00 PM
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When you say that you have nothing, does that mean the engine turn over but won't fire or does it mean that the engine doesn't do anything when you press the start button?
Do the guages light up?
 
  #4  
Old 05-22-2018, 08:07 PM
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Gauges light up, bike turns over, will occasionally backfire but wonít catch
 
  #5  
Old 05-22-2018, 08:08 PM
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Originally Posted by hamlin6 View Post
When you say that you have nothing, does that mean the engine turn over but won't fire or does it mean that the engine doesn't do anything when you press the start button?
Do the guages light up?
it turns over, lights up, but wonít catch, backfire occasionally but wonít start
 
  #6  
Old 05-22-2018, 08:11 PM
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I would bypass the fuel pump to see if it's clogged.
Does it make any difference if you have choke engaged?
 
  #7  
Old 05-22-2018, 08:16 PM
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Originally Posted by hamlin6 View Post
I would bypass the fuel pump to see if it's clogged.
Does it make any difference if you have choke engaged?
took the line off pump, itís still squirting fuel, so donít think that is issue. Iím literally stumped on this thing
 
  #8  
Old 05-23-2018, 09:56 AM
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Let's get primitive with this. There are 3 things required to cause fire: oxygen, fuel and heat.


You are confident that fuel is being delivered to the fire pit (carbs). That leaves oxygen, heat, or the fire pit itself. Are you certain that the air passage isn't blocked? If so, your heat is the next thing to check. Spark plugs are pretty simple to inspect. One plug at a time, remove the plug, leaving it connected to the boot and insure the threads are solidly against the frame. When you press the start button, you should see arc across the plug lead. If you don't feel comfortable doing that, there are simple tools you can buy that you install inline with the plug wire. it lights a light when you press the button if everything is good.
If it's not any of those things, then your carbs. They can be very finicky.
 
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Old 05-23-2018, 02:31 PM
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Originally Posted by hamlin6 View Post
Let's get primitive with this. There are 3 things required to cause fire: oxygen, fuel and heat.


You are confident that fuel is being delivered to the fire pit (carbs). That leaves oxygen, heat, or the fire pit itself. Are you certain that the air passage isn't blocked? If so, your heat is the next thing to check. Spark plugs are pretty simple to inspect. One plug at a time, remove the plug, leaving it connected to the boot and insure the threads are solidly against the frame. When you press the start button, you should see arc across the plug lead. If you don't feel comfortable doing that, there are simple tools you can buy that you install inline with the plug wire. it lights a light when you press the button if everything is good.
If it's not any of those things, then your carbs. They can be very finicky.
plugs are good and I cleaned carbs twice! Like I said it ran beautiful three weeks ago. But your right, itís simple mechanics, fire, fuel, air, combustion. Iíll try carbs again and see whatís goin on. Really annoyed with this thing now
 
  #10  
Old 05-23-2018, 05:15 PM
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I have an f3 also. The carbs, when clean and dialed in are awesome. But they can be tough to get that way, especially the cleaning part. The passages in there are so tiny that the smallest thing can clog something.
But what's odd with your situation is that it barely fires. Usually it will either want to start or start and run like garbage.
 

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