S4 Carburetor Servicing

[hachi]

So if there is nothing to tune then bikes running on stock jetting dont need to tune carbs just wash them by shop ok, am I correct?

[S750WP]

Originally posted by hachi@May 30 2005, 06:28 PM

So if there is nothing to tune then bikes running on stock jetting dont need to tune carbs just wash them by shop ok, am I correct?

If bike is running on stock jetting no tuning is required. Just wash and balance the carb will do,

[hachi]

Originally posted by S750WP@May 30 2005, 06:32 PM

If bike is running on stock jetting no tuning is required. Just wash and balance the carb will do,

The how to balance them?

Using wat? IS there any adjustment to balance them other then the mixture screw?

Thanks

[S750WP]

Originally posted by hachi@May 30 2005, 06:34 PM

The how to balance them?

Using wat? IS there any adjustment to balance them other then the mixture screw?

Thanks

There are adjustment screws in between the carb which adjust the position of the butterfly valves. Please do not mixed up this adjustment screw with the air/fuel mixture screw, if unsure its better for you to send to shop to wash and balance.

[hachi]

Originally posted by S750WP@May 30 2005, 06:52 PM

There are adjustment screws in between the carb which adjust the position of the butterfly valves. Please do not mixed up this adjustment screw with the air/fuel mixture screw, if unsure its better for you to send to shop to wash and balance.

Oic thanks great info.

[HONG]

Originally posted by S750WP@May 30 2005, 06:12 PM

http://www.carbtune.com/Images/90%275.jpg

 

This is the tool for the adjustment of the mixture screw at the bottom of the carb, it available on the morgan carbtune website for 33 pounds. Mine is similar and made by motion pro from US.

ya.. this is the tool that the "monkeys with bananas" used to adjust the screw below my carb... i have check my CO level at K&T b4... told me anithing below 2 is fine liao.. but my fuel consumption still looks bad for a ver S... planet have this tool ?? if have i dun mind spending 20 bucks ....

[HONG]

Originally posted by anodise57@May 30 2005, 03:47 PM

hmmmmm go try 1st like he said lor... if not... heheeh time to UPGRADE within same class.. SPECIII.. hahhaha

ya... but dun wan same class liao... buy cls 2 bike le... been eyeing a few bikes for a very long time liao... but still considering...

[hachi]

Go to planet and tell them about ur problems, they will able to help. But tuning only $20.

[S750WP]

Originally posted by HONG@May 30 2005, 08:39 PM

ya.. this is the tool that the "monkeys with bananas" used to adjust the screw below my carb... i have check my CO level at K&T b4... told me anithing below 2 is fine liao.. but my fuel consumption still looks bad for a ver S... planet have this tool ?? if have i dun mind spending 20 bucks ....

My bandit 400 CO level is 0.8, stock jets with K&N filter. My gsxr750, dynojet stage 1 jetting with K&N filter CO level is 1.2.

[fabianpbs]

So many shops which one should i go??? I just want to balance and do a tuning to my carb.. And get an K&N filter and earth cable lay...

[eric78]

Originally posted by fabianpbs@May 30 2005, 12:08 AM

Hi eric 78 where is k&t.. How much they charge??

its at ubi blk 3005....its on the rite hand side of the one-way rd....go slow n u can c it....

[eric78]

Originally posted by fabianpbs@May 30 2005, 11:54 PM

So many shops which one should i go??? I just want to balance and do a tuning to my carb.. And get an K&N filter and earth cable lay...

bro we hv give u our opinions....end of the day its up to u to decide which shop to go.....cos everybody hv their individual preferences.

 

wat i tink suit me might not suit u....

[HONG]

Originally posted by S750WP@May 30 2005, 09:00 PM

My bandit 400 CO level is 0.8, stock jets with K&N filter. My gsxr750, dynojet stage 1 jetting with K&N filter CO level is 1.2.

wah.. after seeing ur CO level.. i feel that mine is quite high... cos mine around 1.9 like that... does adjusting the air affect the CO level?? if adjusted correctly CO level will drop??

[S750WP]

Originally posted by HONG@May 31 2005, 01:12 AM

wah.. after seeing ur CO level.. i feel that mine is quite high... cos mine around 1.9 like that... does adjusting the air affect the CO level?? if adjusted correctly CO level will drop??

Your bike is air/fule mixture screw is adjusted too rich, your fuel is not combusted fully hence the high level of CO level.

[hilfiger]

From the above posts is it true there's a difference between balancing n tuning of carbs? Can clarify further?

 

So when we go bikeshop for carbs servicing, we tell them wash n balance carbs but don't tune? Will they get the point n not accidentally tune our bikes?

[S750WP]

Originally posted by hilfiger@Jun 1 2005, 12:46 AM

From the above posts is it true there's a difference between balancing n tuning of carbs? Can clarify further?

 

So when we go bikeshop for carbs servicing, we tell them wash n balance carbs but don't tune? Will they get the point n not accidentally tune our bikes?

Just tell the bike shop, wash and synchronise the carbs will do.

[Alvin.Y]

i got a few prices for carburetor wash and tune

 

$60 at hkl

$80 at planet

140rm in msia (hou heng at ah-kua lane)

 

my shop at tamah jurong (ah meng) charges $70

 

anyway, is it possible to tune to make it more petrol economical?

[hilfiger]

Originally posted by S750WP@Jun 1 2005, 07:27 AM

Just tell the bike shop, wash and synchronise the carbs will do.

Ok...wash n synchronise n DON'T tune.

 

Scali the mechanic ask "Huh?! what synchronise n don't tune??? Synchronise is tune ma!"

 

Then how i explain? Any other info i need to explain further to mechanic? Will they understand what i want?

[HONG]

Jus adjusted my Carb's air intake/mixture at K&T... and changed throttle cable as well... bike now very smooth and better response.... CO level dropped from 2.6 to about 1.4... now testing to see if bike's fuel consumption got improve anot.. will keep u guys updated... my fuel consumption before is 21km/litre.. about 315km b4 reserve tank...

[hachi]

Wat is CO level?

Izzit very important?

Thanks!

[S750WP]

Originally posted by hilfiger@Jun 2 2005, 01:16 AM

Ok...wash n synchronise n DON'T tune.

 

Scali the mechanic ask "Huh?! what synchronise n don't tune??? Synchronise is tune ma!"

 

Then how i explain? Any other info i need to explain further to mechanic? Will they understand what i want?

Tell your mechanic you want to wash and balance the carburetor, if he is unsure better bring your bike to other shop.

[S750WP]

Originally posted by hachi@Jun 3 2005, 05:10 AM

Wat is CO level?

Izzit very important?

Thanks!

CO is just one of the method to determine if your mixture screw is properly tune to combust the fuel efficiently. There are more complex digital gas analyser which measure other gases from your exhausted gas.

[kaginah]

 

the DIY club will come up with it soon enough!

 

alot of R&D and learning has to be done plus i have a little experience in carbs cos last time i tune my own carbs on my runner...

 

i whack in an open pod and rejetted the carbs so roughly i know how lah...

 

wash tune upgrade derestrict?

we'll try and let u guys know...

 

i'm R&D-ing open pod filters on S4... dunno whether will work...

[kel81]

Originally posted by kaginah@Jun 3 2005, 02:21 PM

 

the DIY club will come up with it soon enough!

 

alot of R&D and learning has to be done plus i have a little experience in carbs cos last time i tune my own carbs on my runner...

 

i whack in an open pod and rejetted the carbs so roughly i know how lah...

 

wash tune upgrade derestrict?

we'll try and let u guys know...

 

i'm R&D-ing open pod filters on S4... dunno whether will work...

sounds so power to me.. haha open pod in a vtec.. the vtec will roar..

[kel81]

my idling not stable.. went for servicing last week, change spark plugs, dan one of the spark plug very black. the mechanic say need to wash carbs and tune the bike. but my fuel consumption now is relatively gd. 380km before hitting reserve. shd i go for tuning? riding vtec1.