feetupfun Posted October 14, 2014 Report Share Posted October 14, 2014 also the slide looks quite worn so I'm thinking maybe the slide needle and needle jet might be worn. That would make it run too rich from about 1/4 to 3/4 throttle. Maybe you could take a photo showing the slide needle up close. You seem to be pretty good at close-up photos, if possible can you also photograph the hole through the needle jet? Quote Link to comment Share on other sites More sharing options...
scot taco Posted October 14, 2014 Author Report Share Posted October 14, 2014 First,a little history on the bike.I sold it,regrettedit,then was lucky enough to be able to buy it back.When I got it back home the carb was full of old,bad fuel and the some of the airbox mounts where broke.I fixed the airbox,put in a new filter and gave the carb a good cleaning.I pulled the carb back off tonight for some pics and I noticed two things that made me feel pretty stupid.First,the air screw was never adjusted to the turn and a half to two turns out.I must have just screwed it in aways after cleaning because it was about four and a half full turns out! The other thing is the float level which I have a pic of.Shouldn,t they be level with the bottom of the float bowl mating surface? My other question is if the o-ring on the main jet.Could it cause problems if it,s worn? It doesn,t seem to fit real snug into the bottom of the float bowl.I couldn,t get a good picture of the needle,but it does feel worn. Quote Link to comment Share on other sites More sharing options...
bashplate Posted October 15, 2014 Report Share Posted October 15, 2014 with the air screw that far out it should have been running weak, high fuel level could cause over richness....but if your 'O' ring is rooted, then this would be my fix. Go easy on the oil ratio too if your running synthetic . Quote Link to comment Share on other sites More sharing options...
scot taco Posted October 15, 2014 Author Report Share Posted October 15, 2014 This is the only TK carb with the main jet screwed into the side of the bowl that I have ever fiddled with.So just to be sure,should the floats be level with the float bowl base like a regular VM round slide mikuni ? Quote Link to comment Share on other sites More sharing options...
lbhbul Posted October 22, 2014 Report Share Posted October 22, 2014 I would think the floats should be level, easy enough to try, would also clean the filter, wash out with premix only, the old bikes do not seem to like the new filter oils, definitely replace the little o ring. Larry Quote Link to comment Share on other sites More sharing options...
scot taco Posted October 23, 2014 Author Report Share Posted October 23, 2014 Thanks for the reply Larry.I did set the floats level,but did not try to replace the o-ring on the needle jet.It,s not something I have been able to find yet for sale and I haven,t looked through the o-ring kits at work yet to see if I can find a match.I,m waiting on a new o-ring for the crankshaft and then will put it all together and give it another try with a better adjusted carb .I think in the long run my best bet will be to just order a new carb. Thanks again to everyone for the help. 1 Quote Link to comment Share on other sites More sharing options...
bestrcpilot Posted October 23, 2014 Report Share Posted October 23, 2014 A new carb on any 30+ year old bike is always a good thing. If rules will let you a flat slide carb is a good bit of kit. A new flat slide slide Mikuni made my Ty run like a new bike. After chasing a flat spot I could not get rite of. Quote Link to comment Share on other sites More sharing options...
bashplate Posted October 23, 2014 Report Share Posted October 23, 2014 Try the mid atlantic trials site....they do OKO replacement carbies which are jetted for specific bikes. I have one on my TLR and a mate hes one on his Monty.....F*ckin awesome. and not expensive. Quote Link to comment Share on other sites More sharing options...
lbhbul Posted October 23, 2014 Report Share Posted October 23, 2014 Scot, The o ring I use comes from my kit, it just needs to seal in the bowl & fit the fitting. Good Luck Larry Quote Link to comment Share on other sites More sharing options...
dadof2 Posted October 23, 2014 Report Share Posted October 23, 2014 (edited) From the photo it looks as if your float height may be wrong (too rich) The line on the float should be parallel to the surface where the float bowl connects. Connect the carb (float bowl off) to your fuel tank. With the carb right way up and base of carb horizontal hold the floats up gently (do not bend metal on which they are mounted). Turn fuel on and gradually lower the floats. Fuel should start to drip out when line on float is parallel to carb base. Adjust tang on float frame until this is correct. If you have bike assembles and running turn fuel off and if it runs better / smoke reduces as the fuel level in float bowl drops you know carb is giving too rich a mixture. Is there a little spring loaded pin in the float valve, if so make sure it moves freely and smoothly, no roughness Edited October 23, 2014 by dadof2 1 Quote Link to comment Share on other sites More sharing options...
scot taco Posted October 24, 2014 Author Report Share Posted October 24, 2014 I have been on the MAVT site looking at the OKO carbs and have been kicking around getting one.It seems like they would be very helpful on getting it set up correctly and I like the option of the clear float bowl.It,s good to read that they work that good. That is a good way to check the correct float level dadof2 and simple enough that I should have thought of it.I will try that with a less oiled air filter (I saturated the heck out of it with oil) and new O-rings and see what happens before I order a new carb. Thanks again to all ! 1 Quote Link to comment Share on other sites More sharing options...
bashplate Posted October 24, 2014 Report Share Posted October 24, 2014 dude....an over oiled air filter will make the bike run like a bag of sh*t (don't ask me how I know this, LOL) 1 Quote Link to comment Share on other sites More sharing options...
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