March 26th, 2015, 05:39 PM | #1 |
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Name: bob
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Idle a little jumpy. What's your jetting setup?
Idle is a little wonky after my latest rejetting. Those of you with pods and stock exhaust what's your jetting setup?
Current setup: K&N 0990 pods Pilots: 40 Mains: 110 Needle: 3 washers under both needles Fuel screws: 2.75 turns out Exhaust: stock Last futzed with by agentbad; March 26th, 2015 at 06:54 PM. Reason: You took to much man took too much, too much. |
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March 27th, 2015, 02:56 PM | #2 | |
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Try fine tuning the pilot screws,
Quote:
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March 27th, 2015, 06:31 PM | #4 |
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I warned him about pods.
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March 28th, 2015, 05:38 PM | #5 |
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Pods would def be the factor in your idle. CV = constant velocity. With the stock airbox both carbs have evenly displaced air flowing through which would create a much more stable idle than per se pods. Pods are real sensitive to changes as well not to mention they favor higher rpm ranges.. Correct me if I'm wrong anyone but this is why I opted for a kn drop in vs a pod setup
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March 28th, 2015, 05:41 PM | #6 | ||
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Quote:
Quote:
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March 29th, 2015, 12:48 AM | #7 | |
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Haha I know. Need to get on the next Area P group buy.
Quote:
Yeah so I took a close look at everything and found one of the vacuum lines had come off when I reinstalled it last week. Also had the one of the pilot screws turned out too much. It's running a lot better now. I'm still going to take it back out and put the 112's back in since it seemed more responsive in high RPMS. Oh yeah is there a trick getting the choke cable back on during the reinstall. Real pain the ass even with the needle nose pliers. Last futzed with by agentbad; March 29th, 2015 at 09:15 AM. |
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March 29th, 2015, 08:04 AM | #8 |
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Choke cable is easy.. Make sure you put it into the retaining hole first inserting from the left side. Then, stretch the bent metal cable shroud to the little clip that holds it and it'll snap in. 10 seconds tops.
I dont mean to negatively bash your setup but from when I was looking up proper ways to tune pods I would try and sync the carbs and the pilot screws. I even opted to tune them further by checking exhaust temps with a laser thermometer and checking the plugs. They're finicky and will require a little more elbow grease to run well. |
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March 29th, 2015, 09:21 AM | #9 | ||
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Quote:
My 2¢ on syncing the carburetors @ieathonda Quote:
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March 29th, 2015, 09:32 AM | #10 |
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Carbs are synced and fuel screws adjusted with the bike fully warmed up. Yeah I figured there was an easier way to get the cable on though a pic would help.
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April 13th, 2015, 08:29 AM | #11 |
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Here's what it sounds like:
Link to original page on YouTube. |
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April 13th, 2015, 08:59 AM | #12 |
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Try setting the idle at about 1,500 RPMs a little higher might help, it did mine.
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April 20th, 2015, 01:57 PM | #13 |
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Any slip-on options still exist for the Pregen?
@Ghostt Yeah I tried that first but still a little bit off. I've been playing with the fuel mix screw as well. I think I have a minor exhaust leak on the right side. It seems like it's coming from the drain port. The other side has some patch work from PO. |
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April 20th, 2015, 02:05 PM | #14 | |
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Quote:
And what drain hole? What kind of patch work? Pictures? As far as slip ons go, save your money, if you what loader mufflers, I have a pair of debaffeled OEM ones you can have. Or if your handy there are a number modifications you can do to the OEM ones as well.
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April 20th, 2015, 03:23 PM | #15 |
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I ended up just doing it by ear turning it in until it started to miss then backing it out 1/4 at a time. I think this is the closest I've got it so far. As for the sync I just used a sync tool but I get what you're saying with bench syncing. The bike otherwise is running great if I could only stop sneezing. Here's a pic of the bottom of the right exhaust:
Last futzed with by agentbad; April 24th, 2015 at 05:45 AM. |
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April 20th, 2015, 03:33 PM | #16 |
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As far as that leak goes, personally I'd live with it, or pick up some used ones in great shape off eBay, that what I did to replace the diy debaffled ones that came with it, it was way too loud, and sounded like crap.
When you get bored, tune the idle mixture screws per my how-to. So is the bike running better now? Did you raise the idle up? Et .... The picture below shows debaffelled(left) Vs OEM(right)
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April 20th, 2015, 03:47 PM | #17 | |
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April 20th, 2015, 04:08 PM | #18 | |
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Quote:
So other than the idle being a bit off, how is the bike under riding conditions?
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April 23rd, 2015, 03:57 PM | #19 |
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ever checked your valve clearances, agent?
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April 24th, 2015, 06:07 AM | #20 |
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The last adjustment was done around 8k and I am getting close to 13k now. It idled pretty well after my last carb surgery messing with the jetting but for whatever reason it's acting up now. I guess I will go ahead and pull them off again and put on the spare carb to see how it does. |
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May 10th, 2015, 05:07 PM | #21 |
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Okay so threw on the spare carb and switched out the mains to 112's. Top end is super sexy again but the idle issue persists. Starting to drive me a bit mad. Could it really be my valves?
Last futzed with by agentbad; May 11th, 2015 at 04:26 AM. |
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May 10th, 2015, 05:38 PM | #22 |
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I just live with my idle like this. Is that bad?
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May 10th, 2015, 06:14 PM | #23 |
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May 10th, 2015, 06:35 PM | #24 |
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agent-
Perhaps the audio in your vid is deceiving, but i'm hearing some heavy tapping. I'd check them before chasing your tail. Tuning starts at the valves...adjust and then work outward. I'm not a fan of pods being used with CV cabs....so I'll yield to allow others to comment there. |
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May 11th, 2015, 04:30 AM | #25 | |
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Quote:
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December 3rd, 2015, 09:57 AM | #26 |
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I was going to ask the forum about the necessity of periodic carb syncing. Clearly the long quote by Ghostt (from ieathonda?) is saying NO NO NO. My bike is a 2006 Ninja 250 with 8K miles. It runs fine. The only problem I've ever had in the 3 1/2 years and 7K I've had the bike is when I didn't get the coil wire plugged back in after a valve adjustment. (That was a relief to have corrected!) I take care of "winterizing" by riding all winter, usually every week. Coldest I've ridden was 15º F. I don't go far or fast!)
One question for everyone; I'd just like to affirm that this is normal: when the bike is cold, it is pretty hard to regulate the choke so the idle is under 2,500. (I read somewhere that it shouldn't be over that.) This isn't a concern; I have no trouble warming it up by riding gently right away and have the choke off in a couple of blocks.
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December 3rd, 2015, 02:38 PM | #27 | |
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Quote:
Please, read this: http://faq.ninja250.org/wiki/What_is..._at_startup%3F
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December 8th, 2015, 11:29 AM | #28 |
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Thanks, Motofool! I had not heard of the "gradual on" choke method. I'll have to try that. I appreciate the feedback because I don't actually know anyone with a Ninja 250!
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