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OK here goes... Picked up an 04 200 EXC few months back, needed some work to say the least, wont go into detail of all the things i've fixed on the bike just the current and most present issue I cant seem to fix... it is smoking IE blue smoke/lots of splooge to the point that at the end of a few hour's ride, it's out the tail pipe, running down the back and dripping onto the swing arm/rear break caliper and blue smoking quite a bit. When I first got it, it smoked more and smelled like shit. So first things first went to the carb, I live on the Oregon coast (elevation/temp reference) it's old dirty/stained but inside looks good, came with jetting pilot-45, main-178 needle: no idea what brand guessing stock in the 3rd clip, adjusted the float height due to it leaking gas when bike was upright no tilt with the gas on, Bought JD jet kit and running pilot-45, Main-185 and Needle is blue 3rd clip (JD's recommend specs for my bike @ my attitude). I have also replaced my Inner crankcase seal twice (First time I thought I messed up the O-ring so redid to make sure). I've rebuilt the top end/new piston (same thing) cleaned the PV, NOTE HERE that the PV has some issues, it seems to work fine but the screw that goes on top of the cylinder, down into the PV/flap would not come out preventing me from removing the flap to clean it, however it move's/ function's correctly, and has minimum clearance on both sides. One of the PV cover bolts that also works at the exhaust spring holder, was over torqued at some point (impact driver prob), or a result in a hard impact, the hole the bolt goes into is flailed/jared open a bit, not bad, not in the way of any function/ PV Gearing/hinge, it is not needed for that area to be air tight as their is also a breather that goes out of the PV so will not result in an "air leak" or loss in Top end PSI.... anyway... it's still smoking.... quite a bit.. now the bike itself rides fine I feel, the carb does puke gas when tilted over slightly/ hard to start (kick start) after flooded (like all bikes tho) I don't have any stalling/low idle issues outside of user error on clutch control. Honestly outside of it smoking as much as it does I would think nothing is wrong with it.. I have also tried raising the needle Clip to 2nd clip and it changed nothing at all, not even feel of the bike/response and have a new Spark plug I have yet to put on the bike. I have also "compromised" the crankcase Gasket (new one in the mail) while I was putting the Crankcase back on but that should do nothing with the exhaust just a little gear oil leak not relevant but throwing it out there. So I am at a loss... I've been toying with the idea of getting a Lectron carb... However... would hate to drop $400~$500 and the issue still persist, if it's a jetting/carb/float issue that would fix it and improve MPH/fuel consumption Or something with the PV? but I don't see the PV causing that much smoke/sploogee... I've ridden the bike normally/hard and nothing's happened but I don't want to keep pushing it and possibly clip the bike. Any ideas? "Oh help me 2 stroke community you're my only hope"
Hello everyone, I'm gonna try and get pictures as soon as possible. But I think there is an issue with the motor that I can't seem to solve. I hope someone has advice on this. The power valve shaft has a slotted end to make sure the linkage is fitted on correctly. The entire power valve assembly itself is connected up. But as soon as I want to connect the power valve linkage (the part in which you need to insert the dowel pin if you want to screw it in/ unscrew it) then I have to put ALOT of preload on the power valve linkage to make it fit (pull the power valve linkage upwards). Also: once it is installed, the fork to set the dowel pin in doesn't line up with the hole in the cylinder whatsoever. The fork structure is left of the hole and I cannot rotate the shaft any more counterclockwise (complete dead stop). I can only rotate the power valve clockwise, but I need pliers to rotate the shaft clockwise, alot of force is needed. I have a suspicion that the rotation of the shaft is wrong, but I can't find how as everything is in place as it should be. Last time it was revised by a mechanic and I found it this way. I couldn't insert the setpin because the hole didn't line up with the fork. This is a stock image from the interwebz: (not my bike)
Morning! I have little problem with my KTM EXC 125 2009. Basically bike already had general repair - top and bottom of engine, frame paintwork, new parts as seat, handlebar etc. After repair I went to some light ride, used all tank, after it, I change gearbox oil and go to first hard ride but bike is very weak at high RPM's. In low and medium RPM's everything is fine, but in high RPM's there's no power. There's no interruption or other issues - just lack of power. First thing I have checked was spark plug and stator but this parts are ok. So I checked the power valve - power valve works but open only to half-open position and don't want open fully. In this point I would like to say, the PV is assembled correctly and it's clean: In high RPM mark No. "1" should be visible in window No. "4" - but mark No. "1" move only to half of that way. Power valve as I wrote, is assembled correctly.