Throttle slack

[pkplex]

Gidday.

Just got hold of my first road bike, a YZF R6. And what is bugging me is the transition between idle and slightly above idle. There seems to be a lot of slack/play before the engine actually gets gas, and I don't seem to be getting used to it. So the basic result is unless I twist the throttle slowly and carefully and analyze the engine sound or the bite when the slack is taken up, I cant really take off or corner at low speeds very smoothly or gracefully. It just does not feel natural, has me focusing on the damn throttle more than I should be, and is getting quite annoying.

Annnnyway, Im wondering first of all if this is me being a numpty and that I just need to get used to it, OR, if I should really just adjust it? As for how much slack there is, I am guessing about 30 degrees or something like that. BTW it is a 2001 R6, so no EFI or such.

Any hints, suggestions, or colorful insults?

Cheers

[MSTRS]

There will be an adjuster on the cable somewhere.

[T.W.R]

There will be an adjuster on the cable somewhere.

Main adjuster on the carburettor end of the cable for taking up large amounts of slack.
Adjuster at throttle body for small amounts of slack or fine tuning

[pkplex]

Had a go just before, and I can only take out so much slack before it wont snap back very well. So I am thinking I need to go to the carburetor end, but there appears to be no easy access to it from the side. Is this a take the tank off type mission? :(

[firefighter]

colorful insults?

Cheers

What a useless fucken flower. Ya want me to change your pink knickers for you too?!


Your welcome......:lol:











What? :whistle:

[firefighter]

Gidday.

Just got hold of my first road bike, a YZF R6.

An R6 is a bit full-on for a first road bike i'd have thought....

[DarkLord]

Do you find that when you open the throttle, it kind of drags a bit, like the revs drop for a bit, then it eventually picks up from there and takes off?

My SV does the same thing if that is the case... any ideas on how to fix/adjust it would be great....

[pkplex]

Well hopefully not :D

[imdying]

Given that you can take up the slack just by turning the grip, it sounds more like you have a slight tuning issue. Get a second opinion from someone who has done a few miles on bigger bikes is the first place to start. You may just have slightly off kilter mixture in that range because either the pilot jets are contaminated, or perhaps the idle mixture screw is correctly set (i.e. the carbs need balancing).

DarkLord, start by balancing the throttle bodies and adjusting the TPS sensor to the correct position, there are many many tutorials for this on svrider.com.

[pkplex]

Do you find that when you open the throttle, it kind of drags a bit, like the revs drop for a bit, then it eventually picks up from there and takes off?

My SV does the same thing if that is the case... any ideas on how to fix/adjust it would be great....

Nah its just that it kind of has a bunch of slack, and its hard to feel for when it will start accelerating from idle, ie if I want just a bit more speed while I am idling along in first, if I dont slowly take up the slack and then feel for the bite, it will surge forward a bit.

[DarkLord]

Given that you can take up the slack just by turning the grip, it sounds more like you have a slight tuning issue. Get a second opinion from someone who has done a few miles on bigger bikes is the first place to start. You may just have slightly off kilter mixture in that range because either the pilot jets are contaminated, or perhaps the idle mixture screw is correctly set (i.e. the carbs need balancing).

DarkLord, start by balancing the throttle bodies and adjusting the TPS sensor to the correct position, there are many many tutorials for this on svrider.com.

Hi mate, no it's the carbied one. A 2001 model. I've had the carb balances checked, also had them cleaned, valve clearances checked (all were fine) so I'm a wee bit stumped as to what the problem could be...

[T.W.R]

Is this a take the tank off type mission? :(

.........yep

[imdying]

Ok, same rules apply, off idle hesistation and surges generally relate to the pilot/idle circuits. If you have modifications to the bike, then whoever did them might not have compensated for them.

[The Pastor]

Do you find that when you open the throttle, it kind of drags a bit, like the revs drop for a bit, then it eventually picks up from there and takes off?

My SV does the same thing if that is the case... any ideas on how to fix/adjust it would be great....
Your mixture is not right.

[DarkLord]

Your mixture is not right.

You mean it's running slightly rich or lean?

I had the sparkies checked out and they seem to be ok...

I'm kind of a mechanical n00b though so please correct me if you mean something else.

[The Pastor]

You mean it's running slightly rich or lean?

I had the sparkies checked out and they seem to be ok...

I'm kind of a mechanical n00b though so please correct me if you mean something else.
if you rev it in neutral, does it fall back instantly to idle or fall back slowly?

re reading what you posted it sounds more like a flat spot, does it happen only at a certain rpm?

[DarkLord]

if you rev it in neutral, does it fall back instantly to idle or fall back slowly?

re reading what you posted it sounds more like a flat spot, does it happen only at a certain rpm?

Usually just falls back instantly though from time to time I have noticed it falls back slowly.

It's usually if I am sitting around 5-6,000 RPM and I try and give it a little gas around that kind of rev range. It drops in revs before it actually starts accelerating.

[Cr1MiNaL]

It could be the adjuster on the carburator end. It could also mean your fuel mixture is not right, you need to be running 96 octane fuel. Start by taking it all off and adjusting the throttle bodies then clean the carbs and re fit. Also take off your throttle and clean & lube the cable. Then take the bike out and thrash it to red line in first 3 gears (when was your oil last changed?). Then post up what you find. Injexted bikes are so much easier to diagnose.