Hey guys, so I’ve noticed a weird kink on my rod when I’m trying to give it throttle and I’m already rolling at times it feels like that the bike jerks a little it won’t respond as if the throttle was choking the bike or if it wasn’t giving the bike enough gas to respond to the throttle I’m giving it, and I realized it does it when maybe I don’t catch the rpm right when I give it gas after letting the throttle loose and rolling a little or on a down shift, or when I try to rip it from a low mph.. Idk if it’s something wrong with it or if I’m just being a rookie and don’t understand my bike yet, and at times it feels like a little of both.. it’s turly hard to explain what I feel on the bike idk if I drew a good picture for you guys… thanks in Adanced
Throttle/acceleration kink has anybody experienced this ?
Jay1trey
1 - 9 of 9 Posts
Hey guys, so I’ve noticed a weird kink on my rod when I’m trying to give it throttle and I’m already rolling at times it feels like that the bike jerks a little it won’t respond as if the throttle was choking the bike or if it wasn’t giving the bike enough gas to respond to the throttle I’m giving it, and I realized it does it when maybe I don’t catch the rpm right when I give it gas after letting the throttle loose and rolling a little or on a down shift, or when I try to rip it from a low mph.. Idk if it’s something wrong with it or if I’m just being a rookie and don’t understand my bike yet, and at times it feels like a little of both.. it’s turly hard to explain what I feel on the bike idk if I drew a good picture for you guys… thanks in Adanced
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5,934 Posts
I would try cleaning the pintle for the Idle Air Controller (IAC). It is located between the two throttle bodies and is known to stick over time and acts like a choke on an old carbureted vehicle causing it to sputter between 3 and 4K RPM.
Ima gonna check this out over the weekend cause the bike is old so it could be
I have a suspicion It could be the front breather tube
A breather tube will have no effect on fueling. It just makes an oily mess.
Ron
So I took it for a ride today and realized that it does sputter under 5k rpm once it hits 5 it’s like it opens up and runs just like it should but if you give it a good amount of throttle under 5 between 3-5 it gets jerkey
That’s good to know, I thought it did. And you are right about the oily mess
High map load or rpms above 5k the calibration goes to an open loop richer area. A lot richer. An area where lean might not show up in the normal running . 3-4k is generally a problem area as it's generally the leanest part of most calibrations for cruising. If this issue just recently showed up, do a fuel pressure test first. The whole tune goes for a dump if it's not in spec, so it's the first step in diagnosing this issue. Do you have any engine codes showing? Does your bike have O2 sensors?
Ron
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