Wet Air Screw

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Tomm9050
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Wet Air Screw

Post by Tomm9050 »

For some reason, my air screw is wet. The carb doesn't pee, but there's a lot of spew coming out of the silencer.

Must be the float level, any other suggestions?

Thanks
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Post by Mr. Wibbens »

How many turns out are you?
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Tomm9050
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Post by Tomm9050 »

.7 out
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Post by Mr. Wibbens »

I doubt that would do it anyway
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Post by KDXsg »

wet air screw aside. thought maybe you should changed to a bigger pj. should be around 1 - 2 turn out rite?
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Post by Tomm9050 »

PJ = 40
MJ = 52
needle 1173 3rd clip
RB head
92 200
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OLHILLBILLY
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Post by OLHILLBILLY »

Check your float level for sure. Being the early model 200 I can't say much on the jetting. But, if your AS is less than 1 turn out, the theory is, you need a bigger pilot jet.
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Tomm9050
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Post by Tomm9050 »

any fool proof procedure for checking float level???
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Post by OLHILLBILLY »

Get yourself a shop manual, tells you how to do everything on your bike.
Mine cuts off at '95, and everything is different for the earlier models, right down to how to set the float level.
Meantime, do a search on the subject, I'm sure it has been discussed here sometime in the past.
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Post by Tomm9050 »

I have the manual, it's kind of vague unless you
have the special tool.
1992 KDX 200; RB head; Fatty pipe; stock carb; Stock silencer

40 / 150 / CGK pos 3
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Post by Tomm9050 »

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Post by OLHILLBILLY »

Set the float height to the recommended 16mm as shown in measurement #4, and you should be good to go.
My manual shows the "special tool" too, but I just set it by measuring it and all works fine.
The difference between the '95-up and the '94-back, is that the newer version has to have tha carb body angled when you measure the float height, so that it doesn't compress the spring loaded float pin. The older ones can apparently be level upside down to set the height.
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Post by Tomm9050 »

Mine is a '92.
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Post by Tomm9050 »

Ok, so I pulled the carb and the lower part of the air intake (airbox) had fuel on it, I raised the carb float level approx 1 - 1.5 mm.

That should lower the fuel level ?
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Post by Julien D »

Yeah, but if the float level was too high you should have had some fuel overflow. Perhaps the overflow vent is clogged?
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Post by Tomm9050 »

Which vent would that be? The carb doesn't "pee".
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Post by scheckaet »

the lower one I believe
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Post by Tomm9050 »

Something is not right, I went from 1172 to a 1173 needle and 155 to 152 MJ
(40 PJ) and am getting major spewage, looks like the Gulf of Mexico.
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Post by Julien D »

Stock silencer? Drained the gunk out of it recently?
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Post by Tomm9050 »

yes stock, I guess that's the next step.

it's blowing chunks
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