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Thread: [Discussion] Carburetor

  1. #101
    warrior.c.o.n.p
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    Quote Originally Posted by thrasher View Post
    K & t at ubi
    Quote Originally Posted by Fazli View Post
    Combine Motors @ Sin Ming Autocare.
    ok noted!!!! thnks both of you
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  2. #102
    khaiwasaki
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    Quote Originally Posted by LXY View Post
    when warmed, rpm is ard 1.4-1.6 but the needle very unstable. when cold, rpm is ard 1 so when start engine that time, the bike is like choking (petrol doesn't move smoothly) and keep on die off until i rev and rev it.
    my fc still quite alright, 24km/L.
    i dun understand the timing mean? = higher wear and tear>?
    Bro, just wanna noe or any bros out there noe what is e standard FC fer spec 3?

     

     
  3. #103
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    Quote Originally Posted by khaiwasaki View Post
    Bro, just wanna noe or any bros out there noe what is e standard FC fer spec 3?
    Depends on each bike. Some can get 350km, some 300km. As for me only 260km.

    Try to pump full tank and see how much Km you clocked before the meter starts dancing.
    "Bikes don't leak oil, they mark their territory"...

  4. #104
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    I tried full tank (18liters) clocked 200-210km mileage

    thats the maximum for me (V-tec opened once I exit gas station) enroute to Krabi

    In singapore, i maintain RMP at 6-7. the mileage i have is around 300km (full tank)

    : ) ride slow, consume lower. Ride fast. consume higher
    The happiest person has worries too
    But, he knows very well that everyone has worries
    Therefore he gives happiness to the worried people.

  5. #105
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    Hi bros, if my bike very difficult to start, issit because of carburator? cuz battery, spark plug juz change.. got cranking sound but cant seem to fire up the engine.. have to push start always..

  6. #106
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    Quote Originally Posted by rockerz90 View Post
    Hi bros, if my bike very difficult to start, issit because of carburator? cuz battery, spark plug juz change.. got cranking sound but cant seem to fire up the engine.. have to push start always..
    Probably due to your starter carbon. Try knock knock abit. Or else, put in gear 2, reverse start (instead of push forward start). You will hear some crank sound after you release the clutch. After that return to neutral gear, you try start your bike like normal. (Courtesy of Ah Pek guidance). Hope this helps.

  7. #107
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    changed starter carbon already, still same problem.. any pros out there know wats the problem.. quite embrassing for me to push start all the time..

  8. #108
    World Misanthropy
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    Quote Originally Posted by rockerz90 View Post
    changed starter carbon already, still same problem.. any pros out there know wats the problem.. quite embrassing for me to push start all the time..
    Wow you already changed quite alot but yet problem still persists yeah?

    I'm sure there must be some electrical fault somewhere...
    "Bikes don't leak oil, they mark their territory"...

  9. #109
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    Quote Originally Posted by World Misanthropy View Post
    Wow you already changed quite alot but yet problem still persists yeah?

    I'm sure there must be some electrical fault somewhere...
    yup, juz now go mechanic and he show me my bike no spark to fire up the engine.. sian ah must leave bike at bike shop so he can check throughtly..

  10. #110
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    Well hopefully after that your bike is ok liao. Lol...
    "Bikes don't leak oil, they mark their territory"...

  11. #111
    bobsalino
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    Any of you ever service carbs at republic motor.?thinking either goin dere or planet motor

     

     
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    Quote Originally Posted by bobsalino View Post
    Any of you ever service carbs at republic motor.?thinking either goin dere or planet motor
    go bikeworkz !!

  13. #113
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    Quote Originally Posted by bobsalino View Post
    Any of you ever service carbs at republic motor.?thinking either goin dere or planet motor
    go bikeworkz !!

  14. #114
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    Hi Bros... I had a slow stationary drop just now to the left side....Any damage or anything I shud look out for in terms of carburetor setting or balancing?... I start bike, seems like alright.
    The Clown Never Gets Tired Of Laughing, Neither Do I


  15. #115
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    Nothing much la bro. If you're idling is normal, not fluctuating, then it is ok..
    When I feel sad, I stop being sad and be awesome instead. True story. Hehe

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    I thought so too... went riding just now...seems perfectly fine...was a lil scared la bro..just gt the bike....haha but thx anyways. Cheers!
    The Clown Never Gets Tired Of Laughing, Neither Do I


  17. #117
    khaiwasaki
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    Quote Originally Posted by World Misanthropy View Post
    Depends on each bike. Some can get 350km, some 300km. As for me only 260km.

    Try to pump full tank and see how much Km you clocked before the meter starts dancing.
    Okok ive tried mind its plus minus 300km per full tank. im on e safe list. thanks (:

  18. #118
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    Default bad consumption on bike

    for those having bad FC for bike , try this method .

    my bike used to have 280 full tank , i find it so weird because the consumption is really bad .

    i change my spark plug to ilitium , and tune my carburetor at republic motor . carburetor tuning cost $60-70 , spark plug less then 50 ( if i remember correctly ) .

    turn out my full tank can go 380 on petronas 98 or 95 . very good and power improve . this might be one of the problem u guys can inspect on .

  19. #119
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    my bike full tank till last drop, best millage i get is 410km
    bike spec3

  20. #120
    khaiwasaki
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    Quote Originally Posted by igunneri View Post
    for those having bad FC for bike , try this method .

    my bike used to have 280 full tank , i find it so weird because the consumption is really bad .

    i change my spark plug to ilitium , and tune my carburetor at republic motor . carburetor tuning cost $60-70 , spark plug less then 50 ( if i remember correctly ) .

    turn out my full tank can go 380 on petronas 98 or 95 . very good and power improve . this might be one of the problem u guys can inspect on .
    thanks fer sharing i guess i hav to start investing on these things (:

  21. #121
    khaiwasaki
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    Quote Originally Posted by HaiR1 View Post
    my bike full tank till last drop, best millage i get is 410km
    bike spec3
    bro, u serious? so how about the riding style?

     

     
  22. #122
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    hi there i am new to this thread, but i took time to read all of your post .. very interesting ... learn alot


    But i will like to noe more about dyno jet .... when unqiue motor to ask ... they told me if u put after market pipe then u should get a bigger jet so that your engine will not under power ... if u don do so, it will wear out your engine slowly...

    don noe if it is true or it is jus their sales tactic??

  23. #123
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    It's true, it's to maximize the performance of the bike

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  24. #124
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    Quote Originally Posted by darkiller22003 View Post
    hi there i am new to this thread, but i took time to read all of your post .. very interesting ... learn alot


    But i will like to noe more about dyno jet .... when unqiue motor to ask ... they told me if u put after market pipe then u should get a bigger jet so that your engine will not under power ... if u don do so, it will wear out your engine slowly...

    don noe if it is true or it is jus their sales tactic??
    Bro, how much do they quote u on getting bigger jet n doin e dyno jet stuffs?

  25. #125
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    100 for normal bigger size jetting .... 350++ for dyno jet set not including tuning

  26. #126
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    Yo peeps.

    I'm facing this problem recently; my bike (version S) can start and engine will rev as per normal. Then about 1 min later or so, the engine gradually dies down and stall. As if it ran out of petrol. So since then, I pull throttle when it's dying down, or use the choke to start and let the engine continue running.

    Last time, I was able to start engine without the choke, even if the engine was cold (for instance, one week of not warming up my bike).

    I suspect it's the caburetor, which needs tuning, I think. But is it possible that the air filter could be the issue?

    Carburretor service is ex man. Especially when there are parts that needs replacement.

  27. #127
    thrasher
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    Ver s? I think its abt time for major servicing already? Thus u need to spend more. Like the saying goes, u pay peanuts u get monkeys
    Thrash? Don't mind if i do.


  28. #128
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    Guys.. izit true that spec 3 main jets theres 2 different size in carb..its like 2 jets 0.5 and another 2 1.0???

  29. #129
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    Quote Originally Posted by khaiwasaki View Post
    bro, u serious? so how about the riding style?
    if u play pick up, it will suck more. if u open vtec it will suck more..throttle control is important if u wanna get the best FC.
    my spec 3 hits 400km too.

  30. #130
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    mine was 320km. i prefer shell 98 or twice a mth i go for vpower. nvr had a cab service or tuning since i bought the bike. 5 1/2 yrs & still counting
    Life is like a shooting star, it don't matter who you are,

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  31. #131
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    CB400 superfour version s carburetor fix on Superfour VTEC 1?

     

     
  32. #132
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    Hi All,

    What are the options we have for Carbs. i have a 1998 SuperFour CB400F3V, I am going to be fitting pod filters and exhaust, I know I need to rejet but what are the options for differents carbs?

    I have been able to find
    MIKUNI TMR-MJN32 (Yoshimura website)
    MIKUNI TMR32 (Yoshimura website)
    I also understand we can use GSXR400 carbs, any ideas which ones?

    do anyone advise which is the best way to go?

    Cheers
    It doesn't matter what the question is, the answer is more power!

  33. #133
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    It's possible but don't do that. VTEC 1 has vtec. Has an extra hose if im not wrong. Ver S carbs doesnt have this.

    “Speed has never killed anyone. Suddenly becoming stationary, that's what gets you.” - Jeremy Clarkson


    [

  34. #134
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    I got a GSXR400 carb today, supposedly it'll give me more horse power but they're a real dog to keep tuned. I've also got a problem that there's 5mm difference in the diameter so I either need to modify the carb or the rubbers?
    It doesn't matter what the question is, the answer is more power!

  35. #135
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    hi guys do u noe roughly how much to change the diaphragm inside the carburetor cost?

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    Quote Originally Posted by singkiwi View Post
    I got a GSXR400 carb today, supposedly it'll give me more horse power but they're a real dog to keep tuned. I've also got a problem that there's 5mm difference in the diameter so I either need to modify the carb or the rubbers?
    i am not sure of a gsxr400 carb but based on ur problem, u might have to modify the air intake manifold

    Yamaha RXZ, Kawasaki ZX KR150, Yamaha Spark135, Honda CB400 REVO NC42, Suzuki DRZ400SMK8, Aprilia RS125, Suzuki GSXR600K9, Honda RS150R

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  37. #137
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    hello people.

    anybody knows how often i needa service my carb and change the EO, coolant and etc.?

    TY.

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    Quote Originally Posted by shazwanmchaggis View Post
    hello people.

    anybody knows how often i needa service my carb and change the EO, coolant and etc.?

    TY.
    Once every 3 months

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    Quote Originally Posted by shazwanmchaggis View Post
    hello people.

    anybody knows how often i needa service my carb and change the EO, coolant and etc.?

    TY.
    Once every 3 months

  40. #140
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    Quote Originally Posted by shazwanmchaggis View Post
    hello people.

    anybody knows how often i needa service my carb and change the EO, coolant and etc.?

    TY.
    I ride a spec 3... Recommended service for carb(provided the carb does not out of sync) and coolant(of cox if empty need to top up la) only once yearly. EO change once every 5000KM or 3 months which ever come 1st.
    RIDE TO BE A GHOST RIDER

  41. #141
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    Whats the milage per litre of gas you guys are getting for a spec 2?
    Last edited by Dino Bravo; 01-07-2012 at 05:45 PM.

     

     
  42. #142
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    Im using 105 for main jet.
    Is that the stock size?
    Last edited by Dino Bravo; 04-07-2012 at 01:57 PM.

  43. #143
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    anyone got any idea wat is the stock size for the needles, pins and the main jets?
    '97 CB400 F3V (NC31)

  44. #144
    thrasher
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    If u go the previous pages, you'll get the answer
    Thrash? Don't mind if i do.


  45. #145
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    well i did read all 3 pages of this thread b4 posting my qn as i only found the following posts which comes closest to the ans im seeking for or did i miss sumting out?
    Quote Originally Posted by blackness View Post
    in the end replaced 4 needle and 2 main jet things. not sure what are they. 1 of the needle is already broken. and apparently previous owner changed them before. 2 needle was "35" and the other 2 was "38". the mechanic changed all 4 needles to "38". and the 2 main jet was changed from "102" to "105". Also replaced some torn o-rings, and did a cleaning and tuning of carb. Total cost $230
    Quote Originally Posted by Qrisx View Post
    i think its normal for 2 needle - "35" and the other 2 - "38". mine are of those sizes too.
    Quote Originally Posted by MonsterJufri View Post
    Guys.. izit true that spec 3 main jets theres 2 different size in carb..its like 2 jets 0.5 and another 2 1.0???
    none of the figures above was confirmed as stock sizes so hence my qn
    '97 CB400 F3V (NC31)

  46. #146
    micheal84
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    u serious? the fuel consumption drops?

  47. #147
    syeDsTp
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    Guys, my spec1 has mini backfires when engine braking. Is it good? And when my bike almost hits reserve, it will lose power at a certain point of time. Meaning to say that when i pull the throttle, its as though like u off the engine while moving and even the exhaust sound change. Any idea whats the prob?



    Sent from my GT-N7000 using Tapatalk

  48. #148
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    Quote Originally Posted by syeDsTp View Post
    Guys, my spec1 has mini backfires when engine braking. Is it good? And when my bike almost hits reserve, it will lose power at a certain point of time. Meaning to say that when i pull the throttle, its as though like u off the engine while moving and even the exhaust sound change. Any idea whats the prob?
    send it to your workshop good heaven.
    check your exhaust headers! quickly weld the hole or change the exhaust round ring gaskets! it's fine to hear the sound as i've been riding with it for the longest time until i welded it back one month back.

  49. #149
    syeDsTp
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    I dont think theres a hole bcoz all the problems arises when my petrol is on reserve bro..

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    Quote Originally Posted by syeDsTp View Post
    Guys, my spec1 has mini backfires when engine braking. Is it good? And when my bike almost hits reserve, it will lose power at a certain point of time. Meaning to say that when i pull the throttle, its as though like u off the engine while moving and even the exhaust sound change. Any idea whats the prob?


    Sent from my GT-N7000 using Tapatalk
    backfire might be due to air/fuel ratio incorrect..

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