[Discussion] Technical - Fuel Consumption

[eric78]

guys vtec1 do not have reserve switch? new to cb400 family.. then when do we know it is using reserve?

 

Vtec got no reserve switch. When ur fuel gauge starts flashing non-stop means u had oredi enter the fuel reserve zone.

[smiley73]

oh,reli.that cool bro,can u tell me how can u hit to that km?i haven't service plug/carb since i got this bike. anyway to hit km like yrs.if possible please let me know where is the best workshop for service & quote me the price as well.Thanks alotssssss

 

Try using recommended tyre size F 110 R 140

Did my Full service carb @ K&T ard $200. Including Float needle etc.

[fuzzyhall]

hi guys, when my fuel guage hit the red mark. i still can ride on but my bike will on start to die off then it hit rigth at the end of the red mark then i will turn on reserve to fide on. so is my fuel guage workin correctly?

[fuzzyhall]

oh,reli.that cool bro,can u tell me how can u hit to that km?i haven't service plug/carb since i got this bike. anyway to hit km like yrs.if possible please let me know where is the best workshop for service & quote me the price as well.Thanks alotssssss

 

ii service my carb, change somethin insde but i forget wat it call:cheeky: and change my clutch plate and my millage from 20 km/l to 24km/l. now i can ride until 360:cheeky: :cheeky: then turn on reserve

[fuzzyhall]

oh,reli.that cool bro,can u tell me how can u hit to that km?i haven't service plug/carb since i got this bike. anyway to hit km like yrs.if possible please let me know where is the best workshop for service & quote me the price as well.Thanks alotssssss

 

ii service my carb, change somethin insde but i forget wat it call:cheeky: and change my clutch plate and my millage from 20 km/l to 24km/l. now i can ride until 360 :cheeky: then turn on reserve

[E.M]

guys like to know how u all calculate the FC ?? if not wrong mine is 20km/L.. wat can be done to improve the FC ?

[Xdir]

guys like to know how u all calculate the FC ?? if not wrong mine is 20km/L.. wat can be done to improve the FC ?

 

Have the total distance u ve travelled since the last time u pump petrol eg 300km.Take note the total petrol u ve filled presently eg 15L.

FC= 300/15= 20km/L. To improve depends on ur riding style, petrol u used or ve something to improve the efficiency of ur combustion.

If u ride mostly at nite wil improve FC. At nite has higher dense air so improve efficiency of ur engine.

Juz my opinion, if anyone has other or better ideas do correct me.

[E.M]

 

Have the total distance u ve travelled since the last time u pump petrol eg 300km.Take note the total petrol u ve filled presently eg 15L.

FC= 300/15= 20km/L. To improve depends on ur riding style, petrol u used or ve something to improve the efficiency of ur combustion.

If u ride mostly at nite wil improve FC. At nite has higher dense air so improve efficiency of ur engine.

Juz my opinion, if anyone has other or better ideas do correct me.

 

 

FC= 300/15= 20km/L. means 20km/L is good ???

riding a spec 2

[Xdir]

FC= 300/15= 20km/L. means 20km/L is good ???

riding a spec 2

 

Ya its a standard FC for S4. But some of our brothers here can hit 400+km bf res. Tat is sometin my PB1 has nvr bn able to achieve so far.

I ve a fren riding spec1 hitting 450km bf res. Dnt knw whether true or not. He told me he pickup vry slow, chnge gear 3-4rpm n top speed at 80km/h even on e xpressway!

He vry rarely opens his vtec. I tink urs can be better if u dnt always open e vtec n b chill on ur riding style:cheeky:

[E.M]

how to know vtec open without the indicator ??

[Xdir]

how to know vtec open without the indicator ??

 

Me riding PB1 n never try Vtec Version... Somewhr in other thread ppl wil b discussing bout it.

If i'm not wrng, u wil feel thr wil b a sudden boast of speed whenever e vtec opens. During tis time, thr wil b an increase in both fuel n air suppled to the engine for higher power.

Tis wil in turn increase FC. My 2cents of knowledge, if i'm wrng again correct me:cheeky:

[limsn65]

what happen if our mileage is at 99999?? my mileage now is 97575km when i buy its spec1 at 97270km

 

When your mileage touch 00000km u should feel like riding a brand new Spec1..

 

Cheers

[limsn65]

Dear fellow s4 riders,

 

Recently my PB1 has seen a dramatic drop in FC. Also sometimes when i throttle i can feel that the power delivered is very jerky. like got something stuck somewhere blocking it. So far i've changed EO, Oil filter, air filter, spark plug, service and tune carbs, service radiator and changed my starter motor. All done within last 2 weeks. My mech still can't find the problem.

 

Please help if you've encountered the same problem before. Any advice would be greatly appreciated. Thanks.

 

Cheers

 

Check if any water accumulated in Fuel Tank.. It happen to my previous bike B4.. Water vapour comes from Petrol Stn when filling. Expecially during raining season rain water may enter storage tank and end up in our bike when fill-up.... That's why petrol tank get the rust inside....

[nyquist2000]

I noticed most of the machine can get best FC on the following:

1) Weight of a person riding

2) Gradually open throttle and not over throttle

3) Kick to high gear as fast as possible

4) Tyre pressure optimised

 

I realised most of the time, I can move off my bike at second gear without the need for first gear.

[nyquist2000]

My spec 3 was giving me 26km /litre.

[tt6389]

I noticed most of the machine can get best FC on the following:

1) Weight of a person riding

2) Gradually open throttle and not over throttle

3) Kick to high gear as fast as possible

4) Tyre pressure optimised

 

I realised most of the time, I can move off my bike at second gear without the need for first gear.

 

i might be wrong, but i think moving off from gear 2 can wear out clutch prematurely.

[vtec88]

check these out....SUPER 4 riders

 

 

http://www.singaporebikes.com/forums/showthread.php?t=152414

[limsn65]

I see some of u guys having 300-350km per tankful (abt 15 litres) before spare. Some even claim 395km/15lits. My Spec 2 2003 only manage 265km/full tank(15 litres) even after service and electronic tuning my carburator.. Idling is also Ok at 1000-1100k.. Smooth after tuning but consumption improved only from 255km. I'm above average rider, riding about 120-140km/hr if road permits ..

 

Any secrets to share how to get such a high mileage.

 

Cheers

[nando]

Hi everyone, Im kinda new to this thing. Im riding a spec 1(FR plate). Just bought it 4 months back. The fuel consumption in the beginning used to be 300km before hittin reserve. Now its like 250km den it hits reserve. Can anyone tell me why? I ride as per normal, changing gear at 4 or 5 rpm. My tyre pressure is ok, sprocket ok. Issit becos the carb pin needle or sumthing? Due to wear and tear.. Cos tsts wat i heard from sum ppl. How much will it cos me? My budget not tat big.

[mountain_smith]

hey bro, i used to have that prob. 250 -260 km my vtec 1 will reach reserve. i went for carb servicing, change the pins, service air filter, it was well worth it. my bike now reach reserve when i have travelled about 340km. there are other factors affecting fc too, like chain lubrication, pressure of tyres, the way u throttle(throttle happy) but its best to bring ur bike to a shop for further checks.

[loufu]

I see some of u guys having 300-350km per tankful (abt 15 litres) before spare. Some even claim 395km/15lits. My Spec 2 2003 only manage 265km/full tank(15 litres) even after service and electronic tuning my carburator.. Idling is also Ok at 1000-1100k.. Smooth after tuning but consumption improved only from 255km. I'm above average rider, riding about 120-140km/hr if road permits ..

 

Any secrets to share how to get such a high mileage.

 

Cheers

 

:giddy:

[ghost04]

I see some of u guys having 300-350km per tankful (abt 15 litres) before spare. Some even claim 395km/15lits. My Spec 2 2003 only manage 265km/full tank(15 litres) even after service and electronic tuning my carburator.. Idling is also Ok at 1000-1100k.. Smooth after tuning but consumption improved only from 255km. I'm above average rider, riding about 120-140km/hr if road permits ..

 

Any secrets to share how to get such a high mileage.

 

Cheers

 

check ur carbs needles. look out for signs of wear.

[nando]

tanx bro! the thing is i very very seldom open vtec leh.. aniwae how much will servicing and tuning carbs, changing pins cost me? and which shop is the best? any recommendation? tink $200 will be enuff?

[silverstein]

my spec 3 only clock 270-280 before reserve.. i cruise at 80-90km/h.. how come so bad? what is the exact tank capacity excluding reserve? my bike also gets hot very fast.. but the red light nvr come out so i think should be ok.. does my bad FC and hot engine have any connections?

[FY]

Try UNIQUE MOTOR, heard not bad in S4....

Better get it done fast, today the oil price had finally reached USD100, i believe the petrol price will sore up again soon.....