superdafz Report post Posted February 2, 2014 Hi guys , looking for some advice. Ive just bought an 06 rev3 200cc and on my first proper ride I noticed it wont idle properly. If you give it a blip every now and then, its ok. The problem comes when youre not able to gove it the blip. I was coming down a hill and concentrating on staying on the bike and it died. Anybody experienced this? Any suggested jetting? Quote Share this post Link to post Share on other sites
bilks Report post Posted February 3, 2014 (edited) Have you tried adjusting the idle screw when warm.Not every 1 has a tacho,but you should be able to adjust the idle screw.to get a decent tickover , and also check your plug to check mixture strength.also if float level on the low side can give same results. Edited February 3, 2014 by bilks Quote Share this post Link to post Share on other sites
lineaway Report post Posted February 3, 2014 Also if the bike has been sitting, the carb might need to be cleaned. Specifically the pilot jet needs to be cleared. Quote Share this post Link to post Share on other sites
superdafz Report post Posted February 3, 2014 Thanks bilks. Ill try that. The carb has been off, stripped and cleaned and refitted. I'll try the adjustment screws now that I know what does what. Quote Share this post Link to post Share on other sites
petecam Report post Posted February 3, 2014 (edited) I had the same thing, turned the fuel air screw (not by much) and its been great since. Warm the bike up. Mark where it is with paint. Then moved 1/4 in/out until it ran clean. Then adjusted the tickover. Edited February 3, 2014 by petecam Quote Share this post Link to post Share on other sites
superdafz Report post Posted February 3, 2014 I had the same thing, turned the fuel air screw (not by much) and its been great since. Warm the bike up. Mark where it is with paint. Then moved 1/4 in/out until it ran clean. Then adjusted the tickover. Thanks. I'll give it a go Quote Share this post Link to post Share on other sites
0007 Report post Posted February 3, 2014 And, after it's set perfectly They will still want to run rich on steep downhills, you can't fix it so you will need to pull in the clutch and blip Quote Share this post Link to post Share on other sites
dan williams Report post Posted February 3, 2014 Very common for the Mikuni equipped Betas to stall on downhills. Mostly due to the angle of the carb which is optomized for power while climbing. Once the bike is jetted properly for the flats the stall can usually be abated by proper adjustment of the floats and turning up the idle speed just a bit. Quote Share this post Link to post Share on other sites
darrensn Report post Posted February 3, 2014 Hi, I had the exact problem on a 2006 rev 3 250 cutting out when on a slight downhill. I sent the carb to BVM in stroud and they changed the needle valve seat and set the tangs on the float height. It cost £48 with post and it run/idled spot on, problem gone !! Quote Share this post Link to post Share on other sites
