01-25-2017, 01:02 PM | #1 |
Join Date: Sep 2016
Location: Chicago, IL
Posts: 32
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Magician Carb/Idle Issues
Hey guys, so I have the Magician.
I've replaced the stock carb with the Mikuni carb and also upped the main jet. I've had the same issue for a while now though, the bike won't idle unless I do two things: 1) turn the idle adjustment screw way in, where once I ride the bike for a bit it makes the idle rpms way too high, or 2) rev the bike for about 5 minutes or so until the idle "catches" and will remain without any throttle. This happens in about 45-55 degree weather. It seems like the bike will just not idle unless it has warmed up for a while, but I need to do this warming up by either revving it or turning in the idle adjustment. It also will not idle under the choke. Since I have replaced the carb, I'm not sure what else it could be. Should I up the pilot jet? Could it be something else? Or is it normal to have this kind of warm up process to get it to idle when first starting it up? Thanks for any help! |
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01-25-2017, 03:10 PM | #2 |
Join Date: Oct 2015
Location: connecticut
Posts: 980
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Did you adjust the valves yet?
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01-25-2017, 03:20 PM | #3 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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As pistolclass says, this is very important. These motors always come with very tight valves.
Also, choke is usually only used briefly so idling under choke doesn't last long anyway. What setting do you have the needle clip at on the slide? I set mine the fourth groove down to lift the needle slightly. Set your idle mixture screw out 2 turns. That's the screw that points straight up next to the float bowl. Also, if this doesn't help enough, yes, I'd increase your pilot jet. the stock mikuni comes jetted very lean. I think a 20/100??? I'd go a 110 or 112.5 or 115 on the main and a 25 or 30 on the pilot.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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01-25-2017, 11:25 PM | #5 | |
Join Date: Sep 2016
Location: Chicago, IL
Posts: 32
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01-26-2017, 01:20 AM | #6 |
Join Date: Feb 2016
Location: George West, Texas
Posts: 4,097
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https://www.cscmotorcycles.com/Articles.asp?ID=293
Or dozens of other utube videos for a 250 valve adjustment
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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01-26-2017, 01:48 AM | #7 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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Some motors are more cold blooded than others...
but it sounds like your pilot jet maybe a bit small if you go bigger in the pilot jet yer may find it may run rich at high RPMs.. so a smaller main jet could be needed... ..
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01-26-2017, 05:53 AM | #8 | |
Join Date: Dec 2016
Location: Rochester, NY
Posts: 28
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02-03-2017, 01:39 PM | #9 |
Join Date: Sep 2016
Location: Chicago, IL
Posts: 32
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So I replaced the stock 20 pilot jet with a 30 pilot jet. It really helped the no idle problem, but caused another - the thing screams at idle. I turned the fuel mixture screw all the way in and the idle mixture screw wayyy down and the bike, no choke, just screams at really high rpms at idle. I'm going to try a 25 to see if that is a perfect middle ground, but is it normal to see such an increase in idle speed when jumping from a 20 to a 30 pilot jet?
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02-03-2017, 07:03 PM | #10 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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Pete, when you're right, you're really right!
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02-03-2017, 07:11 PM | #11 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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03-30-2017, 10:51 PM | #12 |
Join Date: Mar 2017
Location: Kansas
Posts: 31
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So did you ever get her running right? My magician was a little hard to get to idle at first too but turning the idle mixture out to 1.5 turns seemed to fix it.
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04-07-2017, 10:06 AM | #13 | |
Join Date: Sep 2016
Location: Chicago, IL
Posts: 32
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Quote:
The bike idles much better now after its warmed up, but it still takes a while to warm up when first starting it for it to not die. It's pretty frustrating, but at this point I've gotten used to just making sure I keep giving it a little gas when I first get going as it gets warmed up. Is there anything you would recommend? I'm not quite sure what else it could be. |
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05-24-2017, 02:54 PM | #14 |
Join Date: May 2017
Posts: 3
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Help!
Hey all,
I just recently received my Magician 250 (my first bike) from TxPowersports. So far, the bike looks great though I only have 6 miles on it. The reason I am posting though is I am having issues keeping it running. I have been lurking in these threads for the past few days looking for advice on how to rectify this issue. I have tried to adjust the idle screw. While it keeps it from dying it also smells like something is overheating/burning, as well as revving extremely high (at least it sounds like it, hard to say for sure without an RPM gauge). Part of the issue is that this is my first bike so I know 0 about the maintenance or common issues. The other part of my issue is there is NOWHERE that will even take a look at my bike in Austin, TX. I'm hoping it is just something small I am missing. Any advice that a novice would be able to follow would be greatly appreciated! |
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