Making easily adjustable pilot screws.

[Suzuki Stevo]

If I was riding my KZ1000 down the road and it came to my attention that the idle mixture screw on the #3 cylinder was set to 1.3/4 turns out and wasn't set to 2 turns out like the other 3 cylinders 

I would pull over to the side of the road, break out the screwdriver from the kit and set it to 2 turns out so it matched the other 3 carbs, but that scenario would never have happened because on every 4 cylinder bike I have ever owned, once I get all 4 idle mixture screws set to the exact same *number of turns out I put a drop of paint on the screw so I never have to worry about adjusting the idle mixture screws ever again, whenever I deal with multiple anything, consistency is key to me..right or wrong I have always done it that way.

*A number where the bike starts good, idles smooth and transitions when the grip is twisted without hesitation.

[sledge]

Dennis?

I noticed the comment below you made.

"I have been trying to present the methods used by every motorcycle tuner that I know...along with manufacturer recommendations, and most of the rest of the web"


Just about all the `serious` techs I know use exhaust gas analysers and base the idle adjustment on the CO content in the exhaust rather than the actual physical position of the adjustment screw. What are your comments on this method?

[Suzuki Stevo]

Times have changed, nowadays I just take my EFI bikes to my tuner Nels at 2 Wheel DynoWorks and have him strap the bikes down on his chassis dyno, hookup his laptop and tweak the fuel maps, all I have to do now is maintenance, add fuel and ride them, to hell with idle mixture screws 


GSX650F




V-Strom 650

[dennisgb]

 

[dennisgb]

The Mikuni manual is clear. That is the "right" way to adjust the pilot circuit.

You seem to be preoccupied with arguing until the death...because you are incapable of accepting that you are wrong.

Stick an O2 sensor up your pipe and measure the mixture ratio at idle and report back.

I do that with every bike I tune and I've never had multiple bikes set at 3 turns out...ever.

In fact once you get to three turns it is recommended that you change your pilot jet(s).

But someone with as much experience and knowledge as you should know that. 

Sledge,

Maybe you should actually follow the thread instead of trying to look like you know what your talking about.

You people are argumentative and nasty.

I have better things to do.

Good luck.

[sledge]

Geez Dennis...I am not disputing anything, carb tuning is not something I consider myself to be particularly knowledgeable and I don't generally comment on the topic  all I did was ask for your opinion and comments 

And you say its us who are argumentative and nasty........oh the irony 

Maybe you would be better off in another forum............... this one obviously doesn't revolve around you and that's what seems to be the real problem here 

[Janx101]

A rare moment of agreement here!

[Suzuki Stevo]

So I grab some coffee, take the dog for a walk, come back and the frigging ball is gone again 

[Janx101]

There was a ball? 

[Suzuki Stevo]

As in....

Dennis,
Let me be the first to say..don't just take your ball and go home, you obviously have decades of experience, your only flaw is your incessant tunnel vision in thinking there is only one way to skin a cat, please stay and share your knowledge 

http://www.urbandictionary.com/define.php?term=I%27m%20going%20to%20take%20my%20ball%20and%20go%20home!

"The expression comes from the playground where one kid, the one who owns the soccer ball or basket ball, doesn't get his way in the game. If he doesn't get his way then he gets mad and punishes those who are unwilling to accept his mandate. He does this my taking his ball and going home thus ending the game and any fun the participants were having.

The expression "I'm going to take my ball and go home" when directed at an individual is used to illustrate the individual's immaturity when that person can't get his way and no longer wants to be a participant in the conversation or a contributor to solving a problem."

[Krav]

Holehmoleh. this has become quite the threat.

What i just wanted to say about the screwdriverbits, is that i can't see and hardly feel if the bit actually caught the screw, or not.
I want an easier way.

[Suzuki Stevo]

Holehmoleh. this has become quite the threat.

What i just wanted to say about the screwdriverbits, is that i can't see and hardly feel if the bit actually caught the screw, or not.
I want an easier way.

The needle with the angle is probably the easiest to work with even with gloves on.

It's the interwebz..serious chit Brah 

[Elmojo]

Quote from: Krav on Today at 03:48:12 AM

Holehmoleh. this has become quite the threat.
What i just wanted to say about the screwdriverbits, is that i can't see and hardly feel if the bit actually caught the screw, or not.
I want an easier way.

The extended screws on mine seem to be about as easy as it gets.
Mine hang down far enough that I mistook them for separate idle adjustments at first, until I looked deeper and saw the real idle adjuster.
I wish I could tell you what brand they are or where they came from, but they were on the bike when I got it.
I can take a photo if it will help.

[Janx101]

Ahh. . That ball. .. I must have skimmed past that bit on tapatalk

[Ron888]

This thread -despite it's unfortunate little argument- inspired me to retune my pilot screws.
I simply cut a small screwdriver to size and had zero access issues (except it's kinda hot in there :-0 ).
The tuning was slightly fiddly because there is a delay between turning the screws and the revs changing.It's running slightly smoother and more stable now.

FWIW it's at 3.5 turns out now.Does that imply anything about the needle jets? i.e they are slightly too small? I saw someone mention something like that in this thread

[sledge]

3.5 turns? 

Don't tell Dennis......his head might explode 

[Suzuki Stevo]

This thread -despite it's unfortunate little argument- inspired me to retune my pilot screws.
I simply cut a small screwdriver to size and had zero access issues (except it's kinda hot in there :-0 ).
The tuning was slightly fiddly because there is a delay between turning the screws and the revs changing.It's running slightly smoother and more stable now.

FWIW it's at 3.5 turns out now.Does that imply anything about the needle jets? i.e they are slightly too small? I saw someone mention something like that in this thread

You might want to reread the unfortunate part again..Dennis mentioned 3 turns 5 times in our discussion, and by me quoting him the info was repeated another 4 times. There are 9 references to 3 turns in this thread , are you crazy man....9 references to 3 turns and you end up at 3.5, when Dennis wakes up in the morning there is going to be hell to pay, I wouldn't want to be you 

[dennisgb]

No, doesn't make my head explode. It just means that the pilot jet is too small. If they are stock it's not a surprise. The experts recommend that you go to the next size pilot jet. You can run it like that if you want.

[sledge]

So the way I read that is......

You can either a) Wind the screw in and take the pilot jet up a size.......or b) Leave it as it is 

dunno_black:

[dennisgb]

Usually recommended that the pilot be changed a size when you get to 3 turns out or 1 turn in. It's how you tell if your pilot is sized right when you don't have an O2 sniffer.

If you are running at 3.5 turns you can leave it like that but it's not recommended because the screw can loosen and fall out.

Also on the far ends of adjustment you don't have the best control over the mix. Particularly when you are almost closed...not my rule...just what is recommended.

I know you guys don't believe anything related to pilot screw adjustment with the exception that a static setting is correct.

It's all cool dude...just don't listen to me and do what you want. When your screws fall out and your bike runs like crap, spend a month on here asking people what's wrong