AlGeorge Posted May 12, 2014 Share Posted May 12, 2014 Hey guys, long-time-lurker first-time-poster here! So, I've been working on my xs250 over the past week and now i cant get the engine to start up... It wont fire up, just whirs when i push the start button and I've had no luck with the kickstart either. Basically, to sum up what i've done to it since it was last working: it had broken down on me while i was out on a ride (the vacuum tube kept popping off the tob of the carb inlet and the engine was heating up like crazy, but after much kickstarting i managed to get the thing home with the petcock set to prime) so i decided to check out what was going on down there. I popped out the carbs and checked them over, checked the floats were ok, idle screws, no gunk etc. and they were fine. so as i was putting them back, i noticed a HUGE hole in the airbox that looked as if someone had leant a hot poker up against it (warped melted plastic, which had drooped into the airbox and hardened up and seemed as if it had been sitting there for many-a-year). I patched that up with some aluminium tape. I also noticed my petcock was dripping fuel even when it was disconnected, so i swapped that out with a spare i had lying around. After putting everything back in place, i tried starting the engine and nothing. Wouldn't budge. Just the started motor whirring. After much deliberation and consulting the internet, I decided the best option would be to swap out the condensor so I ordered a replacement which I fit today and lo-and-behold: NOTHING. Same story as ever. Has anyone had/got anything like this? I'm just running out of ideas. Link to comment Share on other sites More sharing options...
jimmy Posted May 12, 2014 Share Posted May 12, 2014 Alright Al Firstly I assume you know a wee bit about bikes (assume cos you didnt post an intro ) so the bike was running before you worked on it. Did you pull the plugs to see if it was sparking or if they were wet. If dry and sparking put a small amount of fuel down the plughole to see if it fires if so then it's back to your carb rebuild Link to comment Share on other sites More sharing options...
AlGeorge Posted May 15, 2014 Author Share Posted May 15, 2014 I took the sparks out today and they were pretty sooty, so i cleaned them up and put them back with a drop of fuel in the cylinders and it started! it was ticking over nicely so i took it out for a test ride and that went fine, but after about 20 minutes i got it back, switched the engine off and tried to start it up again (just to check it was still good) and nothing! same as before really, only now it JUST starts to catch, but don't reach 2000 revs before guttering out. Link to comment Share on other sites More sharing options...
slice Posted May 16, 2014 Share Posted May 16, 2014 As Jimmy says sounds like a fuel issue, back to the spanners for you then? That's right after you do an INTRO ?? Link to comment Share on other sites More sharing options...
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