EVO All Evo Model Discussion

98 Evo Carb Problem

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Old Nov 20, 2010 | 11:05 PM
  #1  
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Default 98 Evo Carb Problem

I have a 98 Lowrider and my carb has started dumping gas out the overflow tube when its running. I have taken the carb off twice, took it apart, checked the float level, did everything my manual says to do, and can't find any thing wrong. Has anybody had this happen and what did you do to fix it. With diesel going up again, I really need my bike.
 
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Old Nov 20, 2010 | 11:22 PM
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id ck the float valve needle assmb. theres a rubber seal that goes bad and causes gas to overflow. its that ethonol **** gas that eats away our rubber parts!!
 
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Old Nov 21, 2010 | 06:22 AM
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Also check the two "ears" that hold the float on, that the little pin slips in to. Over time, from the vibration, one of them can crack or get wallowed out, causing the float to wobble around while riding. This can cause the overflow your getting. It happened to me.
 
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Old Nov 21, 2010 | 08:16 AM
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Both of the above tips are great, but don't forget to check the float as some times they leak. Be sure that thye float level is spot on.
 
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Old Nov 21, 2010 | 04:38 PM
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Mine did it this spring, everything looked good so I cleaned it all and put it back on..still leaked. Took it apart again and looked at the float needle under a strong magnifing glass, it had wear marks in the metal "wings" that act as guides when it goes up and down. Took some croakas cloth and polished them, no more issues. I recomend replacing the thing -(needle)- but I like to tinker and figure things out, my wife says I'm just cheap...LOL

D
 
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Old Nov 21, 2010 | 06:58 PM
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Check fuel tank is correctly venting.
 
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Old Nov 23, 2010 | 11:15 PM
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Originally Posted by IronGear
Check fuel tank is correctly venting.
Yup, mine poured out gas because my gas cap quit venting. I drilled a hole in it & no more gas issues!
 
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Old Dec 6, 2010 | 11:21 AM
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also had a problem with my 98 carbed evo doing the same thing. it was also the gas cap here as well.

head
 
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Old Dec 6, 2010 | 02:48 PM
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Tank should have a small breather tube leading to the ground. You would be amazed at how many of these get enough debris lodged at the end to stop the flow. Also they are soft and collapse, then you have to replace it.

Could still be the needle valve or float itself.
 
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Old Dec 14, 2010 | 07:28 PM
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Remove the float needle valve and blow it out. It may have some dirt in it. good luck, TJ
 
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