LumpyIdle

Ok, good news! The fuel down the plug hole helped and she's started, albeit reluctantly with a bit of help from the throttle (choke didn't seem to do much), so possibly not getting enough air. After it has warmed, the idle is a bit erratic, so i suspect I have a vacuum leak somewhere, and looks like the exhaust manifold is blowing a bit too. But at least it's not cutting out and starting a lot easier when warm, so that's something.

Hi, You're right, it was a bit of an assumption that the fuel is actually getting into the engine. The plug does seem to be dry. There is a slight fuel smell coming from somewhere, but not the plug. I checked the fuel tap - seems ok since the carb bowl is filling up and fuel comes out when I turn the drain screw. I'm fairly sure I put the carb back together ok, I set the mixture screw at the bottom 2 turns out. There are a couple of electrical connectors on the side that I'm not sure what they are for? Is it worth just replacing the carb altogether? There's one on ebay at the moment, but from a '93. Not sure if they are compatible?

Hi guys, I bought an SR 125 a couple of weeks ago and all was good until it began to struggle to start up. Then during a ride around town it cut out a few times, and only just managed to make it back home. Now it won't start at all. The electrics all seem to work (lights etc) and the starter motor will crank over happily enough but it doesn't ever "catch". Tried to troubleshoot a few basics: Inspected the air filter which is clean Changed the spark plug and checked its spark Took apart the carb and gave it a good clean Did a compression test which seemed healthy (a needle's width under 12 bar) So now I'm very confused. Apparently I have all the ingredients for a working engine: Air, fuel, spark and compression, but no luck.. Any suggestions as to what I can check next would be much appreciated! Graham

Hi there, Newbie rider from Herts here, passed my CBT and picked up an SR125 to practice on. Already having issues after a couple of weeks unfortunately, hope you guys don't mind me picking your brains so I can get back on the road Graham