09-23-2018, 04:03 PM | #31 | |
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Quote:
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks Last edited by Whisky; 09-23-2018 at 07:27 PM. |
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09-23-2018, 07:32 PM | #32 |
Join Date: Jun 2018
Location: Florida
Posts: 759
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If the carb is a Mikuni clone, and particularly if your jet kit came from WingsMoto, there can be a significant amount of variation in the carbs as well as the jets.,and in quality in general.
I keep two complete WingsMoto jet kits around for that reason, i have seen the holes drilled off center, not completely drilled thru, ovaled out ,etc. So, my first guess would be you got ahold of mismatched or badly made carb /jets ,and the #95 was somewhere in the mix of variables that allowed it to function. So, the good news is it's fixed ,the bad news is you might never know exactly what the issue was . But, I'd rather be ridin' and not know, than knowing and not riding lol. Peace !
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09-23-2018, 08:21 PM | #33 |
Join Date: Aug 2018
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The 95 jet I used came with the carb. But running that size jet I probably ain't getting any more performance from the carb change? I'm half tempted to purchase a genuine Mikuni carb and jet kit.
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks |
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09-24-2018, 07:08 AM | #34 |
Join Date: Jun 2018
Location: Florida
Posts: 759
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If it is running well and not lean ,then you're likely getting all the performance gain there is to be had ,or so close to it that anything left to gain would be negligible .The VM22 is a better and larger carb ,and if you bought one that came in kit form with a new intake then that too is helping performance, it has a much bigger bore , like the carb does.
That said, parts aren't expensive so if you decide to experiment more then you aren't out a lot of cash but I really don't see you gaining a really noticeable gain ,again the key issue being is it running smooth now and not lean. Sea level range (altitude) ,relative humidity ,even temperature in general ( summer heat vs winter cold) can all affect jet sizing and performance . The 95 that came with the carb, next time you have it apart , if that occasion arises, check that 95 's design against the jets you ordered and tried you had problems with . There are a host of Mikuni clone carb makers out there and some use jets that are NOT made the same as other Mikuni jets ,it's possible all that jet trouble was because the aftermarket jets design isn't the same as the jet design in the carb itself, as in the design of the 95.,which would explain why none of them worked but going back to the 95 solved the issue .
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2001 Mustang GT 2004 Sportster 2018 VADER 2020 Orion RXB250L |
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09-24-2018, 09:09 AM | #35 | |
Join Date: Mar 2018
Posts: 249
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Quote:
If you're at sea level, your jetting will be different versus when you're up a mountain. |
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09-24-2018, 01:53 PM | #36 |
Join Date: Aug 2018
Posts: 286
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Gotcha. the carb came with the larger intake too. I will say it is running good. I will put a few miles on it then check the plug. I only have 70 miles on it so still breaking it in. I read it gets better with miles. Thanks again for the info.
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks |
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09-24-2018, 04:11 PM | #37 |
Join Date: May 2009
Location: SASKATOON
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plunger
when some people change the carb to another carb and some jets... the needle size on the carb is different that the one that came with the new one.... too many mixing of parts... the needle on the new carb is sized for the new jet... I have seen where the needle was green or coated with a film... does not let needle seal the jet... hangs up and over fuels.. leave stuff alone sometimes.. of install new part ... it runs ok... then mod it.. and go from there...
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09-24-2018, 05:01 PM | #38 |
Join Date: Aug 2018
Posts: 286
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It is running a rich. Turn the air/fuel screw in a little?
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks |
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09-24-2018, 05:09 PM | #39 |
Join Date: Jun 2018
Location: Florida
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Yes, but do it slowly. Try adjusting it in 1/4 turn increments ,a little can be a lot in with these small engines, and rich isn't nearly as potentially bad as too lean is. It shouldn't take too much if it is basically running okay now, you are just trying to fine tune.
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09-24-2018, 09:31 PM | #40 |
Join Date: Aug 2018
Posts: 286
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Turned a/f screw 1/4 turn in and took it for a ride, ran good for about 3.5 miles then started bogging and quit. Kind of lucky I was by a friends house so worked on it a bit there. Got it started and it ran for maybe 1 minute then quit again. Couldn't get it started so called another friend with a truck, got it started before he got there so he followed me and I made it about 2.5 miles and it quit. Loaded it up, got it home, got it going again but now I'm going to worry about when/where it will leave me stranded again. Not a fun evening and I'm afraid it will be the first of many.
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks |
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09-25-2018, 08:28 AM | #41 |
Join Date: Mar 2018
Posts: 249
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Do a plug chop. There's a really good guide on chuckuslife on how to tune a carb.
Something weird is going on that is causing your bike to die. It seems like it's dying once you get to operating temp and have been running the bike for a while (based on what you've posted). Is it dying at idle? Partial throttle? Where are you located/what is your altitude? Humidity, altitude, etc. all play a part in the jetting of a carb. A complete different solution is that they have EFI kits available on Aliexpress, eBay, etc. Not quite a direct solution for your problem. |
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09-25-2018, 08:40 AM | #42 |
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Check the petcock and make sure the fuel is flowing freely. May be clogged or trash on the screen in the tank.
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09-25-2018, 08:55 AM | #43 |
Join Date: Jun 2018
Location: Florida
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JerryHawk250 might be on to something here, it's not uncommon for the Chinese fuel lines to degrade quickly and begin to flake from the inside, which will clog and restrict fuel flow and delivery. You should always completely change all of the fuel lines out to some good silicone fuel line from any auto parts store, etc.
Also the petcock drill ,sounds like it's running too good for it to be a jet issue that would always be the same, but maybe it runs just long enough to float trash in the lines/petcock around til it settles somewhere that makes it start blocking fuel flow. My last suggestion would be to check the valve settings ,if it's running good cold then runs long enough to get hot and quits the valve lash might be off, once warm/hot the gap is too tight and it quits. Also, make sure your spark plug cap is clean, and WELL seated, mine was halfassed on there from the factory and it started cutting out and acting crazy ,finally checked plug boot , pushed it on there all the way and instant fix.
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09-25-2018, 05:29 PM | #44 |
Join Date: Aug 2018
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I will replace/check all you have mentioned. It was strange, I rode it around 20 miles before that but it was running rich, the plug was black and sooty, replaced it and turned a/f screw in 1/4 turn, that's when I went for my final ride of the day. I did buy a genuine Mikuni carb and jets to eliminate a china carb issue. It did start right up today but won't be riding until I get these things replaced. I'm located in Lincoln Nebraska, temperature has been 75-85. I will get it figured out. Again. Thanks for all your help.
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks Last edited by Whisky; 09-25-2018 at 06:44 PM. |
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09-29-2018, 10:29 PM | #45 |
Join Date: Aug 2018
Posts: 286
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I purchased a genuine Mikuni carb and installed, started right up but had the high idle again, I tried everything. started w/100 jet, switched to a 95 then a 90, tried moving clip on needle to 2nd from top from factory middle, still idling at 4k, in fact it would still run with a/f turned all the way in. Took carb off and put stock one back on. It started but when it gets warmed up it dies. I can get it started with starting fluid but it wont stay running, when I do get it to idle around 1200-1400 as soon as I give it some throttle it boggs and dies. I think efi kit is in the near future as Im fed up trying to get bike running. I also noticed sometimes after it dies some gas comes out of the float overflow. Any other ideas?
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2018 BD125-8-x21rs ZS190/Genuine PE28 Kepspeed GP1 Exhaust Protaper se x110 bars/grips 1/4 MotionPro throttle Kepspeed Braced swingarm Chimera rear hub assy Grom Intergrated tail light Superlite Sprockets 17/32 custom made from Japan Chimera Swing Arm Bolt RK MXZ Chain #420 All Balls wheel bearings Motodynamic fender eliminator Coremoto ss brake lines Composimo 2.5 lower link Grom Calipers-w/ebc pads/rotors Michelin tire 140&120 13x4/13x7 fatties Grom forks |
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