So it seems from other owner's of K6/K7 600's and 750's that they have some herky jerky throttle, just wondering if any members here have that same problem? My doesn't, but I've heard a lot of others say their bikes are having this problem from experienced riders and newbie's alike. Anyone?
Herky jerky throttle on the K6/K7 600's & 750's
Ghostrider750
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While mine hasn't been doing it since I changed the oil (anyone else noticed that), I'm more concerned about it cutting out in a low speed corner than making me look like a squid. If the bike is leaned and I'm using the throttle to balance it out, a sudden cut-out would be a Bad Thing.
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Check your oil level first
Hawk3 its not the throttle cables. This is the best way I have seen this explained. Hold your throttle constant, then hit the engine cutoff switch quickly off then on. That is how the bike feels. I have been riding for almost 10 years and this my 3rd bike. A lot of people want to say rider error and not accept this bike may have a glitch. So far the best advice is to check the oil level and lower it a bit. Since I am due an oil change that is my next step. I'll post results soon.
Mine has a tendency to "fall" all the way off the gas when decelerating slowly, or driving slowly(around 35mph or less) at a constant speed through neighborhoods an such. It's almost like the secondary butterflies are slamming shut at very little throttle. It only started about 4000 miles ago.
It's kinda starnge, since the bike was running great with several things unplugged. (hahahaha)
It turned out that the Dynojet tuner, Sabin Performance, left the second set of injectors unplugged and the TPS unplugged after the initial dyno tuning from the cams, exhaust, PC3 work. I found all the plugs loose and plugged them in...
Now the bik has much more power, but has very bad fueling in slight throttle conditions.
It's kinda starnge, since the bike was running great with several things unplugged. (hahahaha)
It turned out that the Dynojet tuner, Sabin Performance, left the second set of injectors unplugged and the TPS unplugged after the initial dyno tuning from the cams, exhaust, PC3 work. I found all the plugs loose and plugged them in...
Now the bik has much more power, but has very bad fueling in slight throttle conditions.
i have a 600k7 with only 411 miles on the clock and has similar if not the same problem. it mainly happens between 3,500 and 4,500 rpm, on changing up through the gearbox itll give a missfire sound or blowback splutter kind of a sound at the gearchange interval. also when steadily driving along for no reason it will will lose power for say a 1/4 to a 1/2 second and make the same sound etc and then return to normal. its done this straight out of the dealers and on every ride ive taken on it. the dealers are going to have a look at it on its 600 mile service. from what ive been reading on this and the gixxer forum this isnt just confined to my bike etc.
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6,952 Posts
Hmm just curious, have any of you guys checked your airfilter?
Check to see if theres oil blow in there. I heard its not good to put too much oil in the K6 K7. Thats what I heard from this mechanic. Don't over do it, cause when you lean the bike your going get oil in your airbox.
But if he's full of shit i'm never going there again. LOL.
Check to see if theres oil blow in there. I heard its not good to put too much oil in the K6 K7. Thats what I heard from this mechanic. Don't over do it, cause when you lean the bike your going get oil in your airbox.
But if he's full of shit i'm never going there again. LOL.
I changed the air filter on mine. I also looked to see if I had any oil in the airbox at all. Anywhere in the box, at the opening of the breather tube, etc on 3 different occasions. Not a single drop of oil, and I had a good amount too much oil in it (I realized later). Once I drained the oil to the proper level, the jerking problems stopped on my bike.
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230 Posts
Mine does it too, but I will live ith it until they come up with someway to fix it.
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My K6 750 had this problem and it %issed me off big time as it would always jerk mid corner unless I was carrying lots of revs. My K4 750 was smooth as silk.
At the time I was using a Micron Motogp exhaust and then switched across to the factory muffler and noticed the problem was less pronounced.
Then I put an Akrapovic on and noticed the problem was more evident once more. No idea why.
After I had the bike serviced (6K), it all but disappeared. So I've come to the conclusion that whatever is the cause that it can be adjusted and that might explain why some bikes have it and others don't. I'm going to see me mechanic on Saturday and will ask him what it is due to if I remember. He may have some ideas.
At the time I was using a Micron Motogp exhaust and then switched across to the factory muffler and noticed the problem was less pronounced.
Then I put an Akrapovic on and noticed the problem was more evident once more. No idea why.
After I had the bike serviced (6K), it all but disappeared. So I've come to the conclusion that whatever is the cause that it can be adjusted and that might explain why some bikes have it and others don't. I'm going to see me mechanic on Saturday and will ask him what it is due to if I remember. He may have some ideas.
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292 Posts
My previous bike an 06 FZ1 had very similar issues. It turns out that the new generation fuel injection controls in order to meet emmissions cut fuel on decel. Which means that the intake tract is empty on throttle reapplication resulting in a jerky response. One of the best fixes on that bike was a secondary butterfly removal which also resulted in pretty amazing power gains.
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I used to have a k7 600...and I would say that my current k8 is worse.
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You need to have the ECU flashed it has more to do with emissions when you close the throttle the ECU cuts fuel to the injectors when you get back on the throttle ECU says fuel on and you get the jerk. Have the ECU flashed and have the flasher disable the fuel cutoff on decell. Problem solved. How do I know this had it done on three different bikes problem solved on all three.
This will not solve the problem.
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