You can't keep the choke on until it gets warm, it will just overflow
Put on choke for about 10-20 seconds, then turn it off, then use throttle to warm it up a bit (just turn the throttle a few millimetres and rev it really easy), If it sounds like it's about to cut out put on the choke again for a few secs and then turn it off.
-- Edited by zander on Wednesday 22nd of August 2012 07:34:25 PM
Hi, i got home off my dtr other day and it cut out and wouldnt start again, took carb off and cleaned, put it back on, eventually got it started. Went around block on it got home turned it off and wouldnt start again, bike has spark, the choke doesnt seem to working also, any reason why choke would break? Thanks for any advice
Put in 2nd gear and try run start it. Btw was the spark plug any wet?
Also are you sure you've tanked the right kind of fuel? Sounds kinda like when my buddy borrowed some fuel from another friend, and it turned out to be diesel he got (nobody knew cuz we were in a hurry) :P
First he could ride like 3 kilometres, then wait 5 minutes, then he could ride about 1 km, then wait 5 minutes, then just a few hundred metres, and then it wouldn't start at all
Right bit more info, to start bike i need to put choke on, start bike and keep revin then turn choke off straight away, bike ticks over nicely, if i put choke on, start bike and just leave choke on, the bike will cut out. So for some reason choke works to start bike, but cant be left on untill bike warms up because bike just cuts out, but if i turn choke back off soon as bike is started and give it few revs then that sorts it. I can live with that like, still bit curious why choke cant be left on though to increase revs and why it just cuts out when left on, any ideas?
Never new that to be the case with any other bike, 4 or 2 stroke, usealy keep choke on and revs increase then when bike sounds like its goin to die then turn choke off.
I've ridden DT's that wont start with the choke off and some that will kick straight away and go. If it were my bike I would have the carb off.
Open it up and give it all a good clean with some carb cleaner including all jets and passages and take the choke apart to check for wear. If all is ok it's probably your carb settings.
Then put the carb back on the bike and set the carb up to Yamaha/Haynes settings. I have found that re setting the carb settings often helps.
Set the air screw all the way in and set the idle screw so that the bike will run.
You then need to turn the air screw out to 1 and 1/4 turns from fully in. But... you wont be able to do this with the idle screw remaining the same. you'll see what i mean but you'll basically have to keep adjusting the idle screw as you make very small turns of the air screw ( 1/4 turn at a time( keep note of where you are on the 1 and 1/4))
As you bring the air screw out the revs will change and you'll then turn the idle to allow you to change the air some more. Eventually you'll have the air screw at 1 and 1/4 which is the correct setting.
Set the idle to the correct RPM for idle and you'll be at a state where the settings are correct.
This is only what I would do so don't take it as gospel and im sure someone will confirm or correct me if this is bad advice.
Yeah iv done all this, cleaned carb, sett mixture screw, bike runs fine just choke doesnt increase revs, also need to blip throttle when tryin to start it
Only just got bike, there's receipts there for top end rebuild a 1000 miles ago, that's not problem any ways, bike runs great, plenty go init, problem is with choke itself, and basically the starting of the bike.
If it was stuck on though bike wouldn't tick over when it was warmed up, i am starting to think its a faulty choke mechanism though, iv had it out and to bits but couldn't see anything wrong with it
Well if the choke has been removed, examined for wear and replaced correctly then it cant be faulty and has to be something else. If you've missed something or feel you didnt examine it enough, try taking it apart again. It's easy to miss something as worn if you don't have anything to compare it too.
