carb crap---fixed

i got carbs clean new idle air screw in set them all at 2 3/4 out set the carbs air box on........1 is richer than before 2 still white 3 starting to tan (3out) 4 black black black now she loads up at idle........stock jets stock box 4 into1 exhaust WTF i should be lean all across the board

 

Re: carb crap

Did you remove the AIR Jets?
Is there any chance you mixed-up the Fuel Jets?
Have you checked the integrity of the Intake Manifolds and the Carb Neck Hose Clamps for Air Leaks?
Throttle Shaft Seals; too?

Flipped-over Flat and O-ring in the Pilot Mixture Holes?
Are the NEW Pilot Mixture Screws exactly like the Old ones?

Get it running and spray all the critical joints, clamps and seals with some Carb Cleaner and see what happens.

Let's try to get the bottom of it.

 

Re: carb crap

1.yes
2.no kept them all in order with each other
3.yes and did the carb cleaner test
4.checked them tight no leaks
5.new orings in pilot screws
6.yes
7.back to #3
i'm really stumped

 

Re: carb crap

Hang in there yamaha4life,
I had this same thing happen. pulled the carbs countless times rechecked everything, tested, bench synced re installed and to be honest I don't know what I did but one day it just decided to idle and i still don't have it dialed in.
But it's close. I stepped away from it for about a week, was getting pretty frustrated, I'm no motorcycle mechanic.
Anyway stay with it you'll get it sooner or later as I've noticed reading through other threads like yours it always comes down to some small detail.

Good Luck

 

Re: carb crap

running the screw out suppose to make it lean correct cause thats what all my other bikes have been i don't mean to sound stupid here but i feel like it just doesn't do anything....i am starting to wonder about float height and choke now cause everything is perfect but 2 won't do nothing at all i'm just happy i got 3 doing something i'm just so speachless about 1 and 4.....1 before the clean was about spot on now its just way out there 4 hasn't changed at all....oh and p.s. want to give a shout out to chacal for the parts and the needle :wink:

 

Re: carb crap

i got carbs clean new idle air screw in set them all at 2 3/4 out set the carbs air box on........1 is richer than before 2 still white 3 starting to tan (3out) 4 black black black now she loads up at idle........stock jets stock box 4 into1 exhaust WTF i should be lean all across the board

++++++++++

With this to go on; let's try treating each of the four Carbs independently.
Bring Number-1 Down gradually until you get it acceptably colored.
Test 2
Remove the Pilot Mixture Screw and see if Fuel is getting up there.
You need a Syringe and a short length of rubber or vinyl hose.
Stuff the hose in the empty Pilot Mixture Screw hole.
Collapse the Syringe and place the nozzle into the hose.
Release the Syringe and see if some fuel makes the trip.
Give Number-3 a degree or two more Richness.
Set Number-4 at 1.75 Turns and see what the Plugs say.

The type of Syringe you will need.
Available at the Drug Store.

 

Re: carb crap

ok so i'm al Dee-da-dee i have been going the wrong way lol in lean out rich :?

 

Re: carb crap

Stand down.
Call off the dogs.

Return to DEFCON-5

Just a little SNAFU. Nuthin' to get all worked-up about.

 

Re: carb crap

ok well #2,3 are tan 4 was looking good then went to hell 1 is my big problem.....i stopped counting turns just got new plugs and black went in white went out got #3 2nd try had 2 lost it got her back 4 was same as 3 then went south.......ok for #1 rich kept going in and going and going till i bottomed out anything after a 1/4 turn it runs rich......its the new idle screw also dunno if thats the problem or not oring in it is fine......what i did notice was if i hold the throttle at one stop after a second it just revs up on its own only at idle will it not rev up on its own???????? :?

 

Re: carb crap

compare the mixture screw to the original - if the tip is even slightly different, that may be your problem.. I ran into this with an XJ1100 I was working on... the mixture screws we got as replacements were just a tiny bit different and it seemed that nickel-width of a turn went from too lean to too rich.

 

Re: carb crap

ok i think i have had enough.......pulled the idle screws out of 1 and 4 cause the mix just suck.....looked at the screws look the same put them back in......nothing now no fuel coming out of both????????still my just alittle throttle and it just takes off on a rev-fest it runs like pure sh!t now wont idle right revs on its own at least i could ride it before i started all of this.....to top it off my jeep broke today so now i can't drive anything :x oh yeah checked the float height also they were all good

 

Re: carb crap rick help?????

DEFCON-3
Rick i skipped DEFCON-4

 

ok well got them set close a few days ago still not real happy with them my new factory exhaust came in today removed the 4 to 1 installed to stock set up.....spend around 10 minutes with the screws 5 minutes with the sync tool.... smooth idle took a 10 mile ride...its not the same bike i have power everywhere runs so smooth got home pulled the plugs.....all tan....perfect anyone in the market for a supertrapp????

 

Stop-by the Main Office and pick-up your "License to Tweak"
It gets quite addicting, you know.

You'll be sittin' there, with all the folks around the table, Birthday Candles supplying the only glow in the room, flashes go off from a few cameras, somebody blows-out the candles ... and suddenly, it hits you. You get the overwhelming compulsion to know how your Spark Plugs are lookin'.

"Honey, honey! Where are you going in such a rush"?
"Just cut me a piece of cake. I'll be just a minute".

You come back. The confetti is all vacuumed-up. The dishes are all washed and put-away. Everybody is lookin' at you with their noses going slightly left and right and left and right; standin' there in night clothes.
You have a stain on your new shirt that ain't comin'-out. A squadron of jets are flying past Old Glory on TV with the National Anthem playing. Your wife present for you sittin' in the middle of the table -- still wrapped!

The worst part about it is:

You don't feel Guilty!

 

lol i really didn't think that just a 4 to 1 would and could cause that much problems with the bike but it must...i pulled the plugs layed them side by side and really looked at them....i used to be able to know where each one came from just by the color of the plug...not now my little babies are all the same :cry: there growing up being big plugs running in a pack together :lol: i love it..i really thinking hard about the harley muffler thing but this maxim midnight exhaust is so cool all black...i don't have huge chrome hanging from both sides so you really get to see the whole bike and not just focus on the chrome cans and i'm really worried that the harley stuff would piss my plugs off and make them start not minding me....ATTN...i would like my title changed from 2nd gear to "Tweek Junkie"

 

JEEP BROKE, HOLY CHIT, DEFCON 2 !!!!

 

no i'm use to it is an 05 grand cherokee...its been in the shop more than on the road....but now i have to pay for the stuff not jeep :evil: lol put it this way it has 22,000 miles on it and almost 4 years old.........yeah i dont have it enough to drive it

 

Let me see if I understand this correctly,

All you basicly did, besides going the right direction
with air mixture screws, was to replace after market
exhaust with factory spec exhaust?

Or did I miss part of the thread?

 

More importantly, you have proven once again that a 4-1 DOES NOT "improve" performance it merely alters it and causes all sortsa headaches. The Yamaha engineers that designed these things really got it right and all of our mere mortal attempts to outsmart them will fail, some more miserably than others. I too was AMAZED at how much my 550 IMPROVED when I took it back to the stock exhaust. Even more remarkable was the difference after doing a valve adjustment, had 1 intake (#1) and two exhaust (#2, #3) that were tight. Do a valve adjustment if you haven't and see how much better it is...

 

removed pods and 4 to 1 went to all stock......much much better
NIGHT AND DAY