Since '02 xBhp is different things to different people. From a close knit national community of bikers to India's only motorcycling lifestyle magazine and a place to make like minded biker friends. Join the #16YearsOfxBhpCelebrations click here.

WE DESIGN ON

Lenovo ThinkPad
Magazine
Castrol Power 1

Accelerate quick but brake easy.

Our Partners

User Tag List

Results 1 to 10 of 10
Like Tree3Likes
  • 1 Post By Pinaki
  • 1 Post By paul.1911
  • 1 Post By 0mnipresent

Thread: Honda Unicorn - Not Revving

  1. #1
    Rookie
    Join Date
    Mar 2013
    Location
    Pune
    Posts
    8
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Honda Unicorn - Not Revving

    Hello Friends,
    I have unicorn 2009 model, it is not going/raveing smooth & not giving better pickup when I drive double seat.
    I have replaced my rear tire, block-piston, Air filter, Clutch plats according to wear out. I have done 55000km till date.
    Now its time to change the chain sprocket?????but it looks in good condition.
    Please tell me what to do for good performance & mileage, now it giving me 50kmpl.

  2. #2
    Moderator The Monk's Avatar
    Join Date
    Apr 2011
    Location
    Gurgaon/ Kanpur
    Posts
    10,019
    Mentioned
    435 Post(s)
    Tagged
    4 Thread(s)

    Default

    Query Approved
    Biking is not about what you have between your legs, its all about how well you use it!!!!!!!

    Give your details here if you want to help your fellow xBhpian stranded in your city

    Touring Blog: Cycling in Mongolia!

  3. #3
    Rusted Pinaki's Avatar
    Join Date
    May 2010
    Location
    Calcutta
    Posts
    2,064
    Mentioned
    103 Post(s)
    Tagged
    0 Thread(s)

    Default

    Lubricate the chain and adjust it to correct slack , about 1.5 inch up-down movement in the middle of the bottom run , with the bike on main stand . Ask your service-center/mechanic to tune the carburetor for a richer mixture ( fuel mileage shall reduce ) . Your engine is running lean .
    Amit CBF150 likes this.

  4. #4
    Rusted MidnightEvil Parth's Avatar
    Join Date
    Sep 2012
    Location
    Haldwani,Uttarakhand
    Posts
    947
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)

    Default

    I think the chain sprocket is the culprit. Ask your mech and go for what he suggests.

  5. #5
    Rusted RohIIT's Avatar
    Join Date
    Oct 2012
    Location
    Bhilai > Pune
    Posts
    837
    Mentioned
    58 Post(s)
    Tagged
    0 Thread(s)

    Default

    Most probably front sprocket is worn off . Adjust chain slack and re tune carb .

    ----consecutive posts auto-merged-----

    Most probably front sprocket is worn off . Adjust chain slack and re tune carb .

  6. #6
    Rusted paul.1911's Avatar
    Join Date
    Jul 2012
    Location
    New Delhi
    Posts
    779
    Mentioned
    34 Post(s)
    Tagged
    0 Thread(s)

    Default

    What is the last time u changed your spark plug? If u have driven more than 15000 in your spark plug then change it.
    Change it to Mico or NGK and don't go for Champion. Your company recommends NGK CPR8EA-9 or RG6YC CHAMPION. Recommended gap 0.8-0.9 mm.
    After u changed spark plug u need to get your carb re-tuned.

    If u want to change chain sprocket then go for DIAMOND RACING SPECIAL. The number of teeth for unicorn front sprocket is 15t and rear 42t.
    Last edited by paul.1911; 04-19-2013 at 12:39 AM.
    Amit CBF150 likes this.
    | SOL 68s | Rynox Tornado Pro | Rynox Advento | Cramster TRG2 | Scoyco MC20 | Hero 5 and SJ6 |

    Adjusting Tappets FZ25 www.youtube.com/watch?v=VhiJGtd_Xigl
    Engine Oil & Oil Filter Change www.youtube.com/watch?v=9AZ5MlXF7dc

    Visit here for more DIY www.youtube.com/c/LifeofPal

    DIY - Foam Air filter Cleaning & Oiling / Horn Repair Guide / Replacing Motorcycle Fork Oil

    Read This Before You Buy Any Halogen Bulb
    Engine Overhaul

  7. #7
    Rusted
    Join Date
    Jun 2012
    Location
    MH-03, Mumbai, Maharashtra, India
    Posts
    285
    Mentioned
    28 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Amit CBF150 View Post
    Hello Friends,
    I have unicorn 2009 model, it is not going/raveing smooth & not giving better pickup when I drive double seat.
    I have replaced my rear tire, block-piston, Air filter, Clutch plats according to wear out. I have done 55000km till date.
    Now its time to change the chain sprocket?????but it looks in good condition.
    Please tell me what to do for good performance & mileage, now it giving me 50kmpl.
    When was the last time you changed the engine oil?
    What grade engine oil you put in the engine? As putting the wrong grade of engine oil also worsens the revving and smoothness.

  8. #8
    Addicted 0mnipresent's Avatar
    Join Date
    Feb 2013
    Location
    Mysore, Karnataka, India
    Posts
    105
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Amit CBF150 View Post
    Hello Friends,
    I have unicorn 2009 model, it is not going/raveing smooth & not giving better pickup when I drive double seat.
    I have replaced my rear tire, block-piston, Air filter, Clutch plats according to wear out. I have done 55000km till date.
    Now its time to change the chain sprocket?????but it looks in good condition.
    Please tell me what to do for good performance & mileage, now it giving me 50kmpl.
    See you are lucky that you're getting 50 kmpl mileage.Usually others get 40-45 kmpl in Unicorn.
    The reason you're getting so high mileage is your carb is running lean mixture and too lean or too rich
    mixture is not good for the engine,it should be exact.So IMHO please inspect and adjust the carb.
    Related to the chain sprocket,as you have done 55k kms,its better if you change it.
    Check the mixture by inspecting the spark plug,if the tip is light brown,its a good tuned carb.
    Try to lubricate your chain for every 200-300 kms which increases the life of both sprocket and chain.
    Amit CBF150 likes this.

  9. #9
    Live2Race Rakesh Rok's Avatar
    Join Date
    Jan 2013
    Location
    From Mandya, in Mysore, Karnataka
    Posts
    1,336
    Mentioned
    82 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Amit CBF150 View Post
    Hello Friends,
    I have unicorn 2009 model, it is not going/raveing smooth & not giving better pickup when I drive double seat.
    I have replaced my rear tire, block-piston, Air filter, Clutch plats according to wear out. I have done 55000km till date.
    Now its time to change the chain sprocket?????but it looks in good condition.
    Please tell me what to do for good performance & mileage, now it giving me 50kmpl.
    It's time now that you get your sprockets changed, I think it'll be in the final limits of the sprocket, I guess the front GB might have worn out. . . If you need an extra pick up, ask your mechanic to tune your carburetor for performance, it'll give you that extra pick up and also go for shell engine oils, semi-synthetic that I am using currently (not the yellow one, but a still upgraded than that) which will cost you around 315. . . I have tuned up my unicorn towards a rich mixture and believe it or not, it can beat down an rtr180 on a straightline drag, I had a race soon after I got it tuned, we started together, my bike went further uptil 90-95 kmph and that's when the rtr180 took the lead and also the top end has been increased from 101 kmph to 120+ kmph which I have rode it till there, all these you get by sacrificing a little amount of FE, firstly I was getting up to 55-59kmpl, now getting uptil 52-53 and I don't rev my Unicorn continuously, only sometimes. . .

    (PS: Don't forget to change your oils regularly, tighten the chain and lubricate it once in a week and leave it for time to time service, then your ride will rock)
    Yamaha Rx135 - 2005 - 2007 (stolen :mad:)
    Scooty Pep - 2008 - 2012 (sold)
    Honda Unicorn - 2012 - 2015 (crashed)
    Hero Honda Splendor+ 2015 - present (temporary ride)
    Bajaj Pulsar AS200 - 16th September 2015 - present ride

    10 years into riding :D
    Live2Race. . .

  10. #10
    Rookie
    Join Date
    Mar 2013
    Location
    Pune
    Posts
    8
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Honda Unicorn - Not Revving

    M using castrol power1 15w-40...Oil is in good quality.

Similar Threads

  1. Bike not revving freely
    By lnagr in forum Help Me!
    Replies: 3
    Last Post: 10-25-2012, 02:19 AM
  2. honda unicorn dazzler Vs honda stunner fi
    By NubieDriver in forum What Bike?
    Replies: 6
    Last Post: 06-09-2011, 02:37 AM
  3. Rx 135 5speed is not revving freely
    By sinhead in forum Thumpers,2-Stroke And Exotics
    Replies: 2
    Last Post: 03-08-2011, 01:49 PM
  4. [Help]: RD350 not revving
    By conrod in forum Help Me!
    Replies: 1
    Last Post: 10-14-2010, 10:08 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •