simon93 Posted January 23, 2010 Posted January 23, 2010 Does anyone know how to change the idle speed on a 1990 Honda CG (sounds worse than it is!) Its a bugger to start up at the moment, and I reckon it might be to do with the idle. Also theres quite a bit of a deadzone on the throttle grip. Could that have something to do with it?And before you ask if a yobbo's been thrashing it about before me - its in mint condition, it's hardly been ridden! 5000 miles! Thanks in advance! Quote
Pete Posted January 23, 2010 Posted January 23, 2010 Try adjusting the idle screw mate. It's usually a black nob like the one in the picture below (underneath the weird blue pipe...but you won't have the weird blue pipe, just look for the screw...in this picture it's next to the carb, connects to a long black tube if that helps you spot it). Start your bike up, let it warm up for 5 or 10 minutes then adjust the idle to whatever you manual tells you to (because you MUST have a manual, right? )http://i138.photobucket.com/albums/q250/tlchasteen/100_0621.jpgIncidentally, how're you starting the bike? Are you giving it full choke, or just trying to start it? It may be absolutely fine and could just be down to your starting routine (especially if it's a new bike as every bike is different, not that I'm calling you a doyle)... Quote
simon93 Posted January 23, 2010 Author Posted January 23, 2010 No. It dosent, have, a m..m..manual . Its not brand new, its like new, 1990, but i think some nostalgic granddad has kept it in his shed for the last 20 years. hehe.To start i open the choke full, (its got 3 settings), and have to kick it a few times, but if i give it throttle before its warm, it cuts out with a pop. I've just been out trying to fix it now, and got the choke onto the middle setting, but as soon as i turn it off/lowest setting, it loses its revs and cuts out! I've turned the idle screw quite a bit, and at first it was increasing revs quite fast, but now theres not a lot of difference. Thanks, for the pic by the way, it helped!! Quote
Pete Posted January 23, 2010 Posted January 23, 2010 Nice one, keep at it. How long are you leaving the choke open for? It should be a good few minutes (depends on the bike), gradually turning it down as you go - i.e. don't get it started then turn the choke off after 10 seconds. Let it warm up first until it doesn't need the choke at all. If you find after 10 minutes it's still struggling try adjusting the idle screw again.As WalneyFrankie has said in a few posts, when it idles it should be just "catching" so it almost sounds like the revs are dropping too low but then it catches it. I personally have mine adjusted so it's a nice constant hum, but if you have it too high you'll find the bike will pull even with the throttle closed off (e.g. coming up to a bend or T-junction!). Quote
simon93 Posted January 23, 2010 Author Posted January 23, 2010 Cheers, that clears a lot up! I've been working on it a bit today, and took it out for a short ride, i think its almost there although it could use a new spark plug, but i'll take it up to the local garage and get them to check it all over anyway! Thanks for you help!! Much appreciated! Quote
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