reward69
Expert Class
Posts: 101
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posted November 03, 2008 03:24 PM
Stumble
I've been trouble shooting a intermittent stumble that I have yet to get rid of. I wondering if any of you have had the same issue.
What happens is on occassion when rolling into the throttle (mostly from 3 to 5 K) it will slightly stumble like an electrical type ignition cut off for a split second. It doesnt necessarily feel like a loading up issue as it will do it only once. Im not discounting this though, just doesnt feel like it. Also it doesnt do it all the time, you may ride a hundred or more miles with no issue, then the next time you ride it may do it a couple of times.
Current setup is an 08 with Brocks SMEG and brocks map. PCIII (thats grounded to the battery), this was one of the first things I did thinking this may be the problem. Also the flie are removed. 4200 miles.
This really isnt an issue, its just one of those things that bugs the crap out of you knowing it shouldnt be doing it. Any thoughts of suggestions would be great.
  
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ratbyk
Expert Class
Posts: 179
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posted November 03, 2008 05:02 PM
Sounds like it is running lean just for an instant as you roll on. Possibly richen up the MAP in the 3-5000rpm range.
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WindSwordNinja
Expert Class
Posts: 203
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posted November 03, 2008 05:18 PM
Hey Reward I was at Dynojet's web site this weekend and saw that they have a program you can download for free that lets you adjust the accelerator pump via the PC.
I plan on installing it on my PC when I pull out the secondary flies on Friday.
Playing around with the accelerator pump settings might clear up your stumble.
I'm not sure if I have the same kind of stumble as you however there is a bit of a lag in that rpm range where my bike seems like it is having trouble getting out of its own way for a second but then goes like a bat out of hell. I'll let you know after this weekend if I fixed it.
____________
2014 ZX14 Black and Green
2008 ZX14 Black and Red SE
1986 ZX1000R Black
"Faster, faster! Faster would be better!" (Serenity)
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reward69
Expert Class
Posts: 101
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posted November 03, 2008 05:31 PM
The stumble (thats the best way I can think of describing it) would be best described as if the chain skipped a tooth. Its a very abrupt BUMP like you killed the ignition for a milla second.
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fifth
Expert Class
The Magnificent Bastard
Posts: 303
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posted November 03, 2008 07:56 PM
I have an 07 and a muzzy pipe. I emailed Muzzy, told them my setup and elevation, etc and they sent me a map that was a GREAT improvement over the maps I had previously downloaded. I was also experiencing a sudden stall, then a just as sudden pick up in power at slow to moderate twist of the throttle while just slo-poking through the neighborhood. The map they sent me fixed the "hiccup"
I also used the pump feature. In my experience of over a month of use with alot of riding in varying conditions, I can find no improvement over my prior setup without it. Dont waste your time with it IMHO
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bigdtd
Needs a job
Interceptors
Posts: 4209
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posted November 04, 2008 05:15 AM
reload the map, you can hook your pc to the bike with it started and hit send to the map you want. sometimes a value in memory could get stale.
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2006 Black ZX-14,6 inches over,16/42, flies out,BMC Street Filter,Brock's Street Meg,Brock's Radial Mount Strap,PClll with Race map,Dynojet LCD w/Techmount, ZX-14 fender eliminator,Pilot Power2CTs,Speedohealer,Pazzo Levers,Cox Radiator Guard, Garmin Nuvi 265WT
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stmaldonado
Parking Attendant
official mack
Posts: 16
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posted November 04, 2008 07:35 AM
i have an 07 14 and also get this occasional problem. it almost feels as if you lost complete power for a split second, but it comes right back. im thinking could there possibly be an air bubble in the fuel line or something??? or maybe a short which causes the pc to stall for a split second
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steve-o
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reward69
Expert Class
Posts: 101
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posted November 04, 2008 10:13 AM
I have reloaded the map, actually about once a month, being as easy as it is. This has never seemed to remedy this. I called Brocks today to inquire about this and there reccomendation was to run some MR11 through it or some injector cleaner. Im going to give this a try and see what happens.
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bigdtd
Needs a job
Interceptors
Posts: 4209
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posted November 04, 2008 03:34 PM
yea just go run the living hell out of it,even if it doesn't work you will feel better  have you tried a different map like the street map or the maxton map?
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2006 Black ZX-14,6 inches over,16/42, flies out,BMC Street Filter,Brock's Street Meg,Brock's Radial Mount Strap,PClll with Race map,Dynojet LCD w/Techmount, ZX-14 fender eliminator,Pilot Power2CTs,Speedohealer,Pazzo Levers,Cox Radiator Guard, Garmin Nuvi 265WT
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reward69
Expert Class
Posts: 101
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posted November 04, 2008 06:55 PM
Yeah this is something Im going to try to see if its map related. Its still runs like a raped ape, but its one of those little neuance things that bugs me.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted November 04, 2008 07:07 PM
How many miles on the plugs?
Good premium fuel?
Sprokets in good shape? (don't laugh , I have seen sprokets so wore the chain was skipping teeth...no. - NOT on my bike !)
Just some thoughts.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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Superman T
Pro
Posts: 1831
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posted November 06, 2008 05:17 AM
Would hope your 08 plugs will still be OK. I would side with changing the map to see how the bike responds.When I was debating which map to use, I heard myltiple times that Brock's Maxxon map was superior....Well not applied to my bike, it had a simular characteristics mentioned in your post.But when I loaded the Track map, Wow...I never have even tried Street map due to my appproval level.Good luck!
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reward69
Expert Class
Posts: 101
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posted November 11, 2008 04:10 PM
Map seemed to be the culpret, changed maps and havent had the stumble since. On a call to brocks they mentioned it could be the injectors being dirty, nope, their street map. Also ran a competitors map (other than brock) and was really pleased with the outcome. Going to be testing some more when things warm up, but really impressed with the power delivery of the new map.
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