KX 250 Problems! Please help!

[KawasakiRipper]

Hello guys, i just put a new pro X piston kit in 1998 kx 250, it has tons of compression now and idles fine but when I get on and  ride it as soon as I hit the gas, the bike bogs and dies. Also when I was looking though the oil glass it looked as if the oil was bubbly? Any help would be greatly appreciated! Thanks guys

http://i72.photobucket.com/albums/i197/Smallz700R/WP_20140710_0021_zps69791c7d.jpg

[Foxx4Beaver]

did you check the piston to cylinder clearance when you put it together?

the oil isn't grey or milky is it?

[KawasakiRipper]

yeah well i sent the piston and cylinder to millenium tech, i just changed the oil and started it if I remember correctly the oil after 5 minutes of running was bubbly and kinda gray instead of clear,? Thanks bud

[KawasakiRipper]

i just went and checked it and its clear and to the top of the sight glass, its just depressing because before i rebuilt the top end this bitch was soo fast. Its sad

[Foxx4Beaver]

try pullin the plug out right after it dies when you gas it...and see if it's wet or dry.

is the case vent clear and breathing?

[KawasakiRipper]

Here is pick of spark plug sir, I didnt get there fast enough to see if it was wet, looks kinda wet, looks brand new almost and it idles fine but as soon as I start moving its bogs and dies. What do you mean about case vent sir?

http://i72.photobucket.com/albums/i197/Smallz700R/WP_20141023_0031_zps28691a6b.jpg

[Foxx4Beaver]

What do you mean about case vent sir?

there should be a breather hose on top the case, it's a vent hose, it should be just behind the kick starter, or very close to the kick starter.

[KawasakiRipper]

Sorry sir im a bit confused, do you see the hose in the pic

---> http://i72.photobucket.com/albums/i197/Smallz700R/WP_20141023_0041_zps05122610.jpg

[Foxx4Beaver]

no son, behind the kickstarter coming out of the engine case.....

[KawasakiRipper]

Am I missing a part or something sir? She starts and idles but dies when I ride it, Here is another pic behind the kicker----------> http://i72.photobucket.com/albums/i197/Smallz700R/WP_20141023_0051_zpsf1af8810.jpg

[Foxx4Beaver]

wow...you have no idea what's what huh?...yeah, I can see the hose behind the kicker in the pic...whether it's breathing or not, I have no idea, you'll have to figure that out.
put your hand just behind the kick starter on the case, you'll find the hose.
other than that...I can't explain it any simpler, best of luck! 

maybe another member could be kind enough to post a pic of the case vent...I would, but neither of my bikes are here at the moment.

[KawasakiRipper]

Ok thanks sir, so uh just try to make sure its not clogged?

[Foxx4Beaver]

correct...and make sure its routed nice and free of kinks.

does it smoke excessively when it's running?

[KawasakiRipper]

Smokes soooo much! And i even drained the gas and mixed an exact ratio of 32:1 with premium gas and it still smokes out the whole neighborhood! it never used to do this, Thanks guys

[Foxx4Beaver]

clutch side crank seal