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R15 V2 top speed problem

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  • R15 V2 top speed problem

    My bike doesn't go over 115-120km. I used to get 135-140km. All seems okay but in 5th and 6th gear, RPM doesn't go over 9000. If I pull the clutch, then it goes over 9000. My rpm doesn't want to go over 9000 from 5th gear, and speed increases very slightly. And my throttle also reacts slightly late. Bike performance decreases rapidly when riding with pillion.

    Can someone please tell me what is the problem with my bike?

    BTW my weight increased from 65 kg to 80kg. I always used Mobil 1(10w40) engine oil. And I maintained tyre pressure 35-45.
    Last edited by xBhp; 01-16-2019, 06:00 PM.

  • #2
    Re: R15 V2 top speed problem

    Thread approved.

    Comment


    • #3
      Re: R15 V2 top speed problem

      How much kms on your bike?

      Comment


      • #4
        Re: R15 V2 top speed problem

        Bike age is 2yrs.And total km is 10700km.I use mobil 1(10w40).And changed it every 1000km.

        Comment


        • #5
          Re: R15 V2 top speed problem

          Bro, prolonged usage at high rpms causes excessive wear on all moving parts.

          Before diving in deep, check the basics. Fuel level, air filter, spark plugs, injectors and others.

          Rev the engine while the bike is stationery. It should rev above 11.5k rpm. Then go full throttle in 2nd gear and see if the engine redlines without lagging power. Check for smoke from the exhaust.Hope this helps.

          Regards
          Pranav
          There is no such thing as a bad motorcycle, it all depends on how you ride it.


          My Modded VictorGL https://www.xbhp.com/talkies/do-your...-gl-110-a.html

          Comment


          • #6
            Re: R15 V2 top speed problem

            Change the air filter and check. Then we will go into other areas if that doesn't correct the problem.
            Photo of my joy- http://www.xbhp.com/talkies/854067-post963.html-3.88 lac km cont....Ownership review of my joy- http://www.xbhp.com/talkies/832255-post608.html- slowly updating as and when getting time. HERO HONDA CBZ EXTREME(2011) - 47K KM AND COUNTINGhttp://www.xbhp.com/talkies/motorcyc...tml#post904152-carb tuning guide

            Comment


            • #7
              Re: R15 V2 top speed problem

              Originally posted by pranavraj1125 View Post
              Bro, prolonged usage at high rpms causes excessive wear on all moving parts.

              Before diving in deep, check the basics. Fuel level, air filter, spark plugs, injectors and others.

              Rev the engine while the bike is stationery. It should rev above 11.5k rpm. Then go full throttle in 2nd gear and see if the engine redlines without lagging power. Check for smoke from the exhaust.Hope this helps.

              Regards
              Pranav

              I changed air filter,spark plug n checked everything.No prob at all.At stationanry it rev 11.5 rpm.And there is no prob at 2nd gear also.Bike only looses pwer in 4th,5th n 6th gear.In 5th gear rpm doesnt wanna go over 9000,if i pull the clutch than it goes over 9000 n speed increases slightly.

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

              Originally posted by sibun View Post
              Change the air filter and check. Then we will go into other areas if that doesn't correct the problem.

              I changed air filter,spark plug already.Perforfance improve 30% only

              Comment


              • #8
                Re: R15 V2 top speed problem

                Originally posted by HaammMbbBaa View Post
                My bike doesn't go over 115-120km. I used to get 135-140km. All seems okay but in 5th and 6th gear, RPM doesn't go over 9000. If I pull the clutch, then it goes over 9000. My rpm doesn't want to go over 9000 from 5th gear, and speed increases very slightly. And my throttle also reacts slightly late. Bike performance decreases rapidly when riding with pillion.

                Can someone please tell me what is the problem with my bike?

                BTW my weight increased from 65 kg to 80kg. I always used Mobil 1(10w40) engine oil. And I maintained tyre pressure 35-45.
                Air pressure is on the higher side. The correct reading is on your bike's swingarm. Did you fill up from a shady fuel pump? Try to fill up at a better fuel pump.
                Originally posted by HaammMbbBaa View Post
                Bike age is 2yrs.And total km is 10700km.I use mobil 1(10w40).And changed it every 1000km.
                Changed every 1000 kms? That's too early for Mobil 1 engine oil.
                Chain slackness also makes a huge difference. Try to see and get it checked and corrected if needed.
                Regards,
                Akash Yadav

                The world ain't all sunshine and rainbows. It is a very mean and nasty place. It will beat you to your knees and keep you there permanently if you let it.

                Comment


                • #9
                  Re: R15 V2 top speed problem

                  Originally posted by Akash.Yadav View Post
                  Air pressure is on the higher side. The correct reading is on your bike's swingarm. Did you fill up from a shady fuel pump? Try to fill up at a better fuel pump.Changed every 1000 kms? That's too early for Mobil 1 engine oil.
                  Chain slackness also makes a huge difference. Try to see and get it checked and corrected if needed.
                  Fuel is okay.I filled up from gud pump.Chain is also Okay.BTW what u mean by air pressure?Tyre air pressure??I checked tyre air pressure before every ride

                  Comment


                  • #10
                    Re: R15 V2 top speed problem

                    Originally posted by HaammMbbBaa View Post
                    Fuel is okay.I filled up from gud pump.Chain is also Okay.BTW what u mean by air pressure?Tyre air pressure??I checked tyre air pressure before every ride
                    Tyre pressure is on the higher side.
                    The manufacturer recommended is 28 front 32 rear.
                    Regards,
                    Akash Yadav

                    The world ain't all sunshine and rainbows. It is a very mean and nasty place. It will beat you to your knees and keep you there permanently if you let it.

                    Comment


                    • #11
                      Re: R15 V2 top speed problem

                      Originally posted by HaammMbbBaa View Post
                      but in 5th and 6th gear, RPM doesn't go over 9000. If I pull the clutch, then it goes over 9000. My rpm doesn't want to go over 9000 from 5th gear, and speed increases very slightly. And my throttle also reacts slightly late.
                      Change your clutch plates ,these are symtoms of worn out clutch plates.

                      Comment


                      • #12
                        Re: R15 V2 top speed problem

                        Check the compression of the engine, clutch and pressure plates, and check the free play of the clutch first of all. Once i noticed such problem with my bike and found that clutch was too tight...

                        Comment


                        • #13
                          Re: R15 V2 top speed problem

                          Originally posted by pranavraj1125 View Post
                          Bro, prolonged usage at high rpms causes excessive wear on all moving parts.

                          Before diving in deep, check the basics. Fuel level, air filter, spark plugs, injectors and others.

                          Rev the engine while the bike is stationery. It should rev above 11.5k rpm. Then go full throttle in 2nd gear and see if the engine redlines without lagging power. Check for smoke from the exhaust.Hope this helps.

                          Regards
                          Pranav
                          FYI stock R15 v2 has rev limiter at 10.5k rpm. So, it will not rev above 11.5k.

                          Comment


                          • #14
                            Re: R15 V2 top speed problem

                            Originally posted by Om1234 View Post
                            Change your clutch plates ,these are symtoms of worn out clutch plates.
                            I changed my clutch plate but it's still doesn't go over 9000rpm in 5th n 6th gear

                            Comment


                            • #15
                              Re: R15 V2 top speed problem

                              Before opening any thing with your bike Check with Fuel Injector cleaner liquid either Stp / Liqui moly / abro if your bike has Fuel injection system other wise carb cleaner..

                              As you have done 10k cloaked too low ride and left idle in 2 years so there must be some fuel sludge is gathered inside fuel injection system. 10K km cloaked bike do not have much wore and torn issue with some inside components other than rubber components..

                              This additive will mostly clean full injector system to some what level. After pouring 1/4th or 1/3th bottle to full tank - ride bike with some 40 to 60 kmph speed range for 100 to 200 km.. Difference is easily noticeable after 50 km of ride...It smooths the engine/revs/ throttle response. ( refer manual for mixing fuel + fuel additives from respective brands)

                              I have been using Carb/Fuel Injector cleaner additive together with fuel every 9k to 10k km range, till 90k cloaked never clean carburetor ever and still getting same mileage and performance..

                              Always fill Power / High octane fuel . Japanese auto manufactures always suggested to use High octane fuel. Even Honda Activa manual says to use High octane fuel.

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