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Carb Rebuild

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Old Nov 16, 2006 | 10:48 PM
  #21  
markmeinteil's Avatar
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Default RE: Carb Rebuild

It doesn't matter so much which way you have the upper vacuum lines routed. So don't worry about that. Are the clear lines coming off the bottom of the float bowls? Maybe you already said, but I might have missed it. If so, those lines are only vent tubes. Sometimes, they are routed back into the airbox. You don't have to have them if that's the case. I just bought vacuum caps and plugged off mine.

Now about the float level. If you don't have it set right, the improper setting can mimic bad jetting. The easiest and cheapest way I have found is to buy a glass tube style antifreeze tester at your automotive parts store (about $1.00), remove the rubber bulb on top, and take out those little plastic ***** inside. And there's your tester! Try to find the tester with the clear vinyl line instead of the hard black plastic line or you will have to replace it later. Just stick the tester's tube onto the float bowl nipple, and loosen the drain screw beside it. While holding the tester vertically next to the carb body, you will "see" where the fuel is inside the bowl. On most carburetors, the fuel level should be just barely under the mounting surface of the bowl. If it's several millimeters higher or lower, you will need to make adjustments. To adjust a float you need to bend the 'tab' where it pushes against the fuel shutoff needle.

Do not use a straight piece of tubing to measure the level. The surface tension inside the tube will give you inaccurate readings

 
Old Nov 16, 2006 | 10:54 PM
  #22  
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Default RE: Carb Rebuild

if the float bowl level is wrong it will flood the carb. and replace the float bowl gaskets too. i forgot how to check the float bowl level tho, damm short term memory......lol and remember till you've done all three phase's of your mods the pipe,carbs and airbox it probaly won't run right so have pashince<<cant spell today neither....lol but when your all done it's gonna run like a raped ape
 
Old Nov 16, 2006 | 10:57 PM
  #23  
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Default RE: Carb Rebuild

dang mark you type too fast.....lol yeah what he said.......lol
 
Old Nov 17, 2006 | 12:37 AM
  #24  
1991ZX600R's Avatar
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Default RE: Carb Rebuild

Alright, I comprehend everything except for the whole bending tab thing, is that internal or external?
 
Old Nov 17, 2006 | 02:12 AM
  #25  
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The tab is on the float arm itself. when you bend the metal upwards toward the needle, you will close off fuel supply sooner, therefore lowering the fuel level. Then, bend it the other way to raise the fuel level.
 
Old Nov 17, 2006 | 04:17 AM
  #26  
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Default RE: Carb Rebuild

if the float bowl level is wrong it will flood the carb.
or starve things of fuel.
 
Old Nov 23, 2006 | 04:19 AM
  #27  
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Alright, now, I am pretty damn good. I got the bike running, tuned, and so on and so forth...yay. I decided to take it for a ride, alright, sure, when I got back home, I saw that I had a trail of oil behind me...F**K! I narrowed it down so I can see the source of the oil, a small tube coming from the bottom of the airbox. What the hell? anyone who can tell me what this is/how to fix it, that would be great. Thanks in advance! -Matt-
 
Old Nov 23, 2006 | 04:31 AM
  #28  
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Sounds like you over filled the engine, and oil is going into the airbox from the crankcase vent tube, then draining out of the airbox water drain hole.

With the bike standing straight up, is your oil level past the sight glass? If it is, that's probably your problem.
 
Old Nov 23, 2006 | 06:52 AM
  #29  
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Default RE: Carb Rebuild

Sounds like you over filled the engine, and oil is going into the airbox from the crankcase vent tube, then draining out of the airbox water drain hole.
kinda sounds that way.
 
Old Nov 23, 2006 | 08:40 PM
  #30  
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Alright, I am actually going to go check that now then, I haven't changed the oil yet, the guy that had it before me did right before I got it. I can tell he actually did it too, it is really clean oil on the ground, so yea...going to check...and the verdict is, yea, its full even with the bike leaning away from the glass, when I tip it up, no difference, it's too full...
 
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