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Author Topic: Installing Air Filter Question?  (Read 16050 times)

shubonker

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Re: Installing Air Filter Question?
« Reply #75 on: June 16, 2010, 01:13:33 AM »
Damn.  Okay, i'll upjet some more and see what happens.  Thanks. 
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shubonker

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Re: Installing Air Filter Question?
« Reply #76 on: June 16, 2010, 03:09:21 AM »
So i up jet to about 120 yet the plug still has no color or residue.  is it possible that a leak between exhaust and engine cause a lean condition?
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shubonker

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Re: Installing Air Filter Question?
« Reply #77 on: June 16, 2010, 04:11:41 AM »
Now i have no idea whats wrong.  I swamped out the exhaust back to the old one.  Did a test run.  Still NOTHING on the plug.  So we have 120 main jet with uni filter as the only mods on a stock agility 50...
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sticlistul

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Re: Installing Air Filter Question?
« Reply #78 on: June 16, 2010, 06:14:59 AM »
that is wrong :)) I think the carb could be to small for that jet size ...
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zombie

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Re: Installing Air Filter Question?
« Reply #79 on: June 16, 2010, 12:15:33 PM »
Stic. may be right. There may be a vacuum leak at or near the carb. too. What spark plug are you using? It HAS to show something! The pipe would not make that kind of a difference.
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shubonker

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Re: Installing Air Filter Question?
« Reply #80 on: June 16, 2010, 02:26:46 PM »
Using NGK C7HSA, its a kymco part from the dealer. 

Where could the leak be?

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zombie

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Re: Installing Air Filter Question?
« Reply #81 on: June 16, 2010, 06:05:39 PM »
Run the engine, and spray some soapy water around the intake manifold/carb.mount/auto choke. if there is a leak the idle will drop off. the plug is ok so I think thete is a leak somewhere... Maybe not but you should see SOME color on the plug.
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wordslinger

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Re: Installing Air Filter Question?
« Reply #82 on: June 16, 2010, 09:49:39 PM »
..shub, you had te problem with the carb seating into the intake...

..are you sure there is no damage to the intake??
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wordslinger

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Re: Installing Air Filter Question?
« Reply #83 on: June 16, 2010, 09:53:39 PM »
..it's possible that the hose clamp has cut the intake, or you cracked it when you were trying to hoss the carb into it...
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shubonker

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Re: Installing Air Filter Question?
« Reply #84 on: June 16, 2010, 10:29:48 PM »
Going to check for some leaks with wd40.   What would the manifold be listed under from stadium yamaha?  Can't find it under carburetor. 
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wordslinger

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Re: Installing Air Filter Question?
« Reply #85 on: June 16, 2010, 10:49:19 PM »
"http://www.stadiumyamaha.com/pages/parts/viewbybrand/default.aspx"

..part #17110 or 1711A for the seal too...under cylinder head..
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shubonker

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Re: Installing Air Filter Question?
« Reply #86 on: June 16, 2010, 11:41:58 PM »
i sprayed wd40 at a bunch of places i thought could be leaking but none of which had any effect on idle... Took out the untake and there is no cracks on it at all.  Btw, the line on the bottom of the carb doesnt connect to anything right?
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zombie

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Re: Installing Air Filter Question?
« Reply #87 on: June 16, 2010, 11:59:16 PM »
Thats just an overflow for the float bowl. it should point to the ground, and not be near anything that will get hot. Any chance you can put a vacuum gauge on the scoot?
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wordslinger

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Re: Installing Air Filter Question?
« Reply #88 on: June 17, 2010, 12:24:16 AM »
..on the A50 oem carb that's the bowl drain tube, z...
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zombie

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Re: Installing Air Filter Question?
« Reply #89 on: June 17, 2010, 12:26:22 AM »
That's what I said W
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