Tom125mx

the choke-system as root cause sounds meaningful! but it's strange, because I just cleaned the carburator with compressed air and an ultrasonic bath ... I will dismantle it again and repeat the cleaning procedure ... any other idea? I keep you updated.. tom

hi all, ... new here, but not new with bikes.. I'm based in switzerland and I assume with 50years I'm a kind of oldie... I have had several bikes in my history: suzuki gt 185, gt 250, honda bf 500f, cb 400f, laverda 750sf, morini 3 1/2 .. all of them sold, because it was my intention to end my carreer as bike... but .... then 2 old offroad bikes crossed my way and I bought them. a 1978 kawa 125 and a yam dt 125 mx.. it's a very emotional thing because these are the bike did like to have in my youth, but could not afford it... now I use them for quick rides up the hills.. and I love to repair and maintain them as well... I was (postively) surprised that I got an answer on my first post (in the calssic section after few hrs ..) cheers tom btw: how can I upload pictures ...?

Hi, I'm new here! I'm from switzerland and bought 2 seventies 2stroke offroad Bikes. The Yamaha makes some Trouble right from the beginnng.... When cold my mx 1978 dt 125 does not start well... it runs a few seconds at low revs only and then it dies... When I Open the throttle dürfend starting is even worse... So after dozends of trials it finally runs smooth. Starting warm ist not a Problem.. Carburator has been cleaned an checked. Fuel supply is fine. Could this be a problem with the ignition System as well? Any ideas? Thx in advance Tom