Guest Posted February 16, 2017 Posted February 16, 2017 So I've got a 125 and recently over the last two weeks I've noticed that in 4th when accelerating there's a very mild hesitation barely noticeable but when I get into 5th on full throttle and get to around 50mph if I ease off throttle to go around a bend for example and then accelerate again whilst still in 5th there's a second of hesitation and you can really feel it then it will pick up again. It feels like for a second it completely loses powerI've not done any performance mods it's got stock filter stock exhaustI don't know anyone who knows about bikes and my knowledge is a bit limited so I'd really appreciate some helpThanks Quote
fastbob Posted February 17, 2017 Posted February 17, 2017 We're going to need a bit more info,what make and model of bike is it please? Quote
Westbeef Posted February 17, 2017 Posted February 17, 2017 Is it fuel injection? I think it's normal for them to be a little less smooth on acceleration - which means it'll feel like the first part of the throttle turn does nothing then it jerks back to life. N.B. I think someone needs to confirm this though. Quote
Guest Posted February 17, 2017 Posted February 17, 2017 It's a Lexmoto valiant. And before everyone says it's because it's Chinese, it's got a Suzuki engine and it's never missed a beat until this Quote
Glorian Posted February 17, 2017 Posted February 17, 2017 It's a Lexmoto valiant. And before everyone says it's because it's Chinese, it's got a Suzuki engine and it's never missed a beat until this Looks EXACTLY like the engine I had on my sinnis. Which I'm pretty sure is a Suzuki engine built under license (Ollie correct me if I'm wrong). So they have the design and are allowed to build it. but they use poor quality parts/labour to do so usually causing issues.Have you taken it to a dealer to have a look at? Is it under warranty? Quote
JRH Posted February 17, 2017 Posted February 17, 2017 Engine is a Suzy cloneENGINEENGINE SIZE :124.53 ccENGINE :Single Cylinder, 4 Stroke Air CooledENGINE BRAND :K157FMI - GSBORE X STROKE :57 x 48.8COMPRESSION RATIO :9.5:1From the Lex web site Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Thanks for the replies. Not taken it to the dealer as it's quite far away from where I live which is why I'm trying to figure it out myself. Plus the guy is a nightmare to get hold of Quote
Glorian Posted February 17, 2017 Posted February 17, 2017 You'll find that I'm afraid.. most places wont work on them due to the sheer hassle with getting parts.Try another dealer they may be able to say whats wrong after a quick look over. Quote
Hoggs Posted February 17, 2017 Posted February 17, 2017 Genuine thought: how fast are you going round these corners? Is it just dropping out the rev range for the gear and if you went down to 4th it would be ok? Quote
Mississippi Bullfrog Posted February 17, 2017 Posted February 17, 2017 Is it fuel injection? I think it's normal for them to be a little less smooth on acceleration - which means it'll feel like the first part of the throttle turn does nothing then it jerks back to life. N.B. I think someone needs to confirm this though. I'll confirm this I find small FI engines feel fussy - like minor hesitation at light throttle setting. Then it pulls once you get past it. Quote
Guest Posted February 17, 2017 Posted February 17, 2017 I did think about dropping gear in the corner but yesterday I did it on a straight, full throttle got to 55mph let go of the throttle for a second then tried to hit the throttle again and it cut out and hesitated then pulled it back Quote
Joeman Posted February 17, 2017 Posted February 17, 2017 let go of the throttle for a second then tried to hit the throttle again Hope you don't actually let go! Quote
Guest Posted February 17, 2017 Posted February 17, 2017 No I just mean I release my hand so it's not in full throttle and let it go to close-shouldn't I do that. I'm new to riding only been riding 6 months Quote
Westbeef Posted February 17, 2017 Posted February 17, 2017 I did think about dropping gear in the corner but yesterday I did it on a straight, full throttle got to 55mph let go of the throttle for a second then tried to hit the throttle again and it cut out and hesitated then pulled it back How long is it taking to start accelerating again once you open the throttle? Quote
Joeman Posted February 17, 2017 Posted February 17, 2017 No I just mean I release my hand so it's not in full throttle and let it go to close-shouldn't I do that. I'm new to riding only been riding 6 months So you are letting go of the grip and letting the twistgrip spring back? No, you shouldn't do that. You should be keeping hold of the handlebar and rolling the throttle shut just enough so as to stop the engine screaming when you pull in the clutch. Certainly don't wait for the revs to drop right off before changing gear. The whole process of changing gear should take a fraction of a second with the revs barely dropping off. Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Carbs have a mild hesitation when going from 0 to open throttle as it passes through different jets. Perhaps this is what you're noticing and making a big problem out of something normal?? Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Think maybe that's something I need to work on then and be smoother with it. If it's not that do you have any ideas what it might be? Could it be air filter needing a clean or chain adjusting...it only does it in 5th Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Yeah it's tru that when I was testing it I was going full throttle then releasing the throttle and then trying to accelerate straight away so I'm guessing that it's that that would cause it-am I right? Quote
Joeman Posted February 17, 2017 Posted February 17, 2017 The bike is always going to behave better when it's ridden as it's supposed to be. Research the proper way to change gears, and practice being smoother, it may be at least part of your problem. Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Yeah it's tru that when I was testing it I was going full throttle then releasing the throttle and then trying to accelerate straight away so I'm guessing that it's that that would cause it-am I right?Yes. That will be your issue. If it still does it when being smoother, clean your carb. Quote
Guest Posted February 17, 2017 Posted February 17, 2017 To clean the carbs I've heard that you can spray carb cleaner directly into the air intake but I've heard it's bad to do that too. I'm not mechanically inclined enough to feel confident taking the Carb apart. Can I spray carb cleaner and would it work Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Also, I've just been for a ride got to full throttle and then didn't let go of throttle completely just eased off it to go around the corner then applied the throttle again and it did the same? Could there be another issue Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Also when the bike is off and I'm rolling it out I can hear like the sound of metal scraping from the front rotor. Any ideas what this could be Quote
Joeman Posted February 17, 2017 Posted February 17, 2017 Also when the bike is off and I'm rolling it out I can hear like the sound of metal scraping from the front rotor. Any ideas what this could beGot any brake pads left? Quote
Guest Posted February 17, 2017 Posted February 17, 2017 Yeah they're pretty much new only 6 months old Quote
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