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Yamaha YZF-R15

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  • #19471
    Re: Yamaha YZF-R15

    hi guys,

    The warning light (red) is coming on after 5 mins of riding. I checked with the ECU diagnostic tool but its not showing any error codes. Checked the engine oil and coolant level, both seem to be fine. The radiator fan also seems to be working fine. Also recently i did a 200km ride and didnt have face any problems. I was going thru the R15 service manual and came up with a couple of probable causes 1. Clogged coolant passage 2. Heavy carbon built up. My bike runs on RC's big bore and free flow. Its clocked around 40K of which at least 12K was with the RC setup.

    Anyone's got any insights as to what might be the reason.

    Comment

    • #19472
      Re: Yamaha YZF-R15

      Originally posted by tintumat View Post
      hi guys,

      The warning light (red) is coming on after 5 mins of riding. I checked with the ECU diagnostic tool but its not showing any error codes. Checked the engine oil and coolant level, both seem to be fine. The radiator fan also seems to be working fine. Also recently i did a 200km ride and didnt have face any problems. I was going thru the R15 service manual and came up with a couple of probable causes 1. Clogged coolant passage 2. Heavy carbon built up. My bike runs on RC's big bore and free flow. Its clocked around 40K of which at least 12K was with the RC setup.

      Anyone's got any insights as to what might be the reason.

      The red light means a problem with the cooling system. I am sure you have been through the process of elimination and ruled out coolant level as one of cause. The next thing that you need to check is the radiator cap. The radiator cap has a pressure valve built into it. If the same is not functioning properly then it will lead to cooling problem. The other thing that you need to check is the head gasket. If the head gasket is leaking coolant into the combustion chamber it can cause the problem (this maybe the most likely prospect if you have used head gasket which was filed to accommodate the big bore).
      Only a biker knows why a dog sticks his head out of a car window.

      Multum in Parvo - Much in Little

      "Yes, it is FAST! No, you CAN'T ride it!" - http://www.xbhp.com/talkies/general-...a-300-san.html

      Comment

      • #19473
        Re: Yamaha YZF-R15

        Always had issue cleaning and lubing on the go. Finally made this portable folding side stand that can fit even a waist pouch.
        Portable folding side stand for Yamaha R15
        https://www.youtube.com/watch?v=Fnmtb6NLhT0
        For bikes without central stand(or paddock stand), chain lubing on the go becomes tedious. After checking online and taking a cue from a fellow rider's work,...


        Do PM me if anyone needs ready-made pieces. Anyone who wants to fabricate it himself, I have posted all the details here - http://www.xbhp.com/talkies/do-yours...tml#post952510
        Picturesque Bidar
        Mesmerizing Belum caves
        Second Chance-A trip to Kuntala Waterfalls, Sadarmatt Anicut,SriRamSagar Dam
        A 4 days rural Andhra exploration trip(Horsley hills,Gandikota)
        Independence Day ride: 6 Days exploration of less known Andhra
        My Bun Burner ride (Officially certified)

        Comment

        • #19474
          Re: Yamaha YZF-R15

          Originally posted by abhimanyu31 View Post
          The red light means a problem with the cooling system. I am sure you have been through the process of elimination and ruled out coolant level as one of cause. The next thing that you need to check is the radiator cap. The radiator cap has a pressure valve built into it. If the same is not functioning properly then it will lead to cooling problem. The other thing that you need to check is the head gasket. If the head gasket is leaking coolant into the combustion chamber it can cause the problem (this maybe the most likely prospect if you have used head gasket which was filed to accommodate the big bore).
          Thanks abhimanyu, I will check the head gasket first.
          Last edited by tintumat; 06-04-2013, 08:49 PM.

          Comment

          • #19475
            Re: Yamaha YZF-R15

            Originally posted by tintumat View Post
            Thanks abhimanyu, I will check the head gasket first.
            I'm having the same issues also, after 3km riding, the red light comes on, as the monsoon is due any time now, I'm not really going to be riding, i have got new gaskets waiting, will change the thermostat and the rocker arms are due for a change (just awaiting one rocker arm) , so will do all at once, hopefully that will take care of that, will probably change the head cover gasket at the same time. I might wait a bit, as I want to change to the big valve head. My problems are definitely related to when we changed back to the stock camshaft recently, after a quick test ride I immediately changed back to the RC cam.
            Beware of Bread, don't say I didn't warn you!
            More than 98 percent of convicted criminals are bread eaters !
            Statistics show that more than 75 % of violent crimes are committed within 24 hours of eating bread !
            Bread is known to be extremely addictive. Subjects deprived of bread and given only water, actually begged for bread after just two days !
            Bread has been proven to kill. Scientists have now uncovered alarming evidence that 100% of the people who eat bread will eventually die !

            Comment

            • #19476
              Re: Yamaha YZF-R15

              I am back on this forum after a long time.

              Got a query about the front fork - The manual says that the front fork oil level should be around 120ml per fork along with air gap of 12.6 cm. So, I recently decided to change the fork oil. I drained the oil and filled up with HP Gabriel fork oil with the air gap set to 12.6 cm as recommended. Now, the ride is harsh with too strong rebound damping! I think the manual is incorrect and the air gap must be more than this. Also, I had to put in much more that 120 ml to get to this air gap.

              So, has anyone changed the fork oil and if yes, what was the air gap that you maintained?
              Your biking tells a lot about the person you are!

              Comment

              • #19477
                Re: Yamaha YZF-R15

                Originally posted by abhijeet080808 View Post
                I am back on this forum after a long time.

                Got a query about the front fork - The manual says that the front fork oil level should be around 120ml per fork along with air gap of 12.6 cm. So, I recently decided to change the fork oil. I drained the oil and filled up with HP Gabriel fork oil with the air gap set to 12.6 cm as recommended. Now, the ride is harsh with too strong rebound damping! I think the manual is incorrect and the air gap must be more than this. Also, I had to put in much more that 120 ml to get to this air gap.

                So, has anyone changed the fork oil and if yes, what was the air gap that you maintained?
                No wonder the rebound is so harsh. I think you have made a mistake. The front fork oil is specified as 240 cm3 i.e. 240ml. You have filled only half of the fluid that needs to go into it. For reference see section 2-10 of the service manual. You can also see that the same in section 4-47.
                Only a biker knows why a dog sticks his head out of a car window.

                Multum in Parvo - Much in Little

                "Yes, it is FAST! No, you CAN'T ride it!" - http://www.xbhp.com/talkies/general-...a-300-san.html

                Comment

                • #19478
                  Re: Yamaha YZF-R15

                  Originally posted by abhimanyu31 View Post
                  No wonder the rebound is so harsh. I think you have made a mistake. The front fork oil is specified as 240 cm3 i.e. 240ml. You have filled only half of the fluid that needs to go into it. For reference see section 2-10 of the service manual. You can also see that the same in section 4-47.
                  I thought is was 240 ml total for 2 forks. Hence initially, I had decided to put 120 ml each. But, since even with 120 ml oil, it was nowhere close to the specified air gap, I had to put in extra oil. I guess, the total oil now is more or less close to the specified quantity. I have only measured the air gap at the end. But, even then the ride is too harsh.

                  I think you got it in reverse. When the rebound damping to too high, the oil level should be lowered so that the damping effect reduces. So, in my case, I suspect the oil level should be lowered further. Hence, my question if the company specified air gap is correct.

                  Another possibility is that the HP Gabriel oil is not suitable for the fork (too high viscosity?). Is there a R15 specific fork oil supplied by Yamaha/Motul?
                  Your biking tells a lot about the person you are!

                  Comment

                  • #19479
                    Re: Yamaha YZF-R15

                    Originally posted by abhijeet080808 View Post
                    I thought is was 240 ml total for 2 forks. Hence initially, I had decided to put 120 ml each. But, since even with 120 ml oil, it was nowhere close to the specified air gap, I had to put in extra oil. I guess, the total oil now is more or less close to the specified quantity. I have only measured the air gap at the end. But, even then the ride is too harsh.

                    I think you got it in reverse. When the rebound damping to too high, the oil level should be lowered so that the damping effect reduces. So, in my case, I suspect the oil level should be lowered further. Hence, my question if the company specified air gap is correct.

                    Another possibility is that the HP Gabriel oil is not suitable for the fork (too high viscosity?). Is there a R15 specific fork oil supplied by Yamaha/Motul?
                    240ml is for one fork. Viscosity specified is 10W, however, the Motul fork oil is 20W. You can get the oil from Yamaha showroom.
                    Only a biker knows why a dog sticks his head out of a car window.

                    Multum in Parvo - Much in Little

                    "Yes, it is FAST! No, you CAN'T ride it!" - http://www.xbhp.com/talkies/general-...a-300-san.html

                    Comment

                    • #19480
                      Re: Yamaha YZF-R15

                      Originally posted by abhimanyu31 View Post
                      240ml is for one fork. Viscosity specified is 10W, however, the Motul fork oil is 20W. You can get the oil from Yamaha showroom.
                      The HP Gabriel oil does not have any viscosity mentioned on the can! Has anyone used the Motul 20W oil? Any reviews?
                      Your biking tells a lot about the person you are!

                      Comment

                      • #19481
                        Re: Yamaha YZF-R15

                        Originally posted by abhijeet080808 View Post
                        The HP Gabriel oil does not have any viscosity mentioned on the can! Has anyone used the Motul 20W oil? Any reviews?
                        I have used Motul 20W without any problem. However, if you are look for 10W oil, it is available at SVC. You will need about 4 bottles, if you are buying from Yamaha, one bottle is 150 ml if I recall correctly.


                        Sent from my iPad using Tapatalk HD
                        Only a biker knows why a dog sticks his head out of a car window.

                        Multum in Parvo - Much in Little

                        "Yes, it is FAST! No, you CAN'T ride it!" - http://www.xbhp.com/talkies/general-...a-300-san.html

                        Comment

                        • #19482
                          Re: Yamaha YZF-R15

                          Originally posted by abhimanyu31 View Post
                          I have used Motul 20W without any problem. However, if you are look for 10W oil, it is available at SVC. You will need about 4 bottles, if you are buying from Yamaha, one bottle is 150 ml if I recall correctly.


                          Sent from my iPad using Tapatalk HD
                          Bro service manual says a total of 240ml. I dont think its 240ml in each. Am a noob here,but just want to say what I read . Its confusing though as its not given clearly in manual.

                          Sent from my MT11i
                          Its better to sweat than bleed!! "AGATT "

                          sigpic

                          Comment

                          • #19483
                            Re: Yamaha YZF-R15

                            Originally posted by siddharthsure View Post
                            Bro service manual says a total of 240ml. I dont think its 240ml in each. Am a noob here,but just want to say what I read . Its confusing though as its not given clearly in manual.

                            Sent from my MT11i
                            Nope, it's 240ml +/- 3 ml each fork. When you fill that much oil it will reach 126mm level. Unless explicitly mentioned otherwise, volume/ quantity will always be for 1 unit, which in this case is 1 fork unit.


                            Sent from my iPad using Tapatalk HD
                            Last edited by abhimanyu31; 06-06-2013, 01:47 AM.
                            Only a biker knows why a dog sticks his head out of a car window.

                            Multum in Parvo - Much in Little

                            "Yes, it is FAST! No, you CAN'T ride it!" - http://www.xbhp.com/talkies/general-...a-300-san.html

                            Comment

                            • #19484
                              Re: Yamaha YZF-R15

                              Originally posted by abhimanyu31 View Post
                              I have used Motul 20W without any problem. However, if you are look for 10W oil, it is available at SVC. You will need about 4 bottles, if you are buying from Yamaha, one bottle is 150 ml if I recall correctly.


                              Sent from my iPad using Tapatalk HD
                              Thanks for the info. I will replace the oil on both forks once again.

                              Originally posted by abhimanyu31 View Post
                              Nope, it's 240ml +/- 3 ml each fork. When you fill that much oil it will reach 126mm level. Unless explicitly mentioned otherwise, volume/ quantity will always be for 1 unit, which in this case is 1 fork unit.


                              Sent from my iPad using Tapatalk HD
                              Yes, I can confirm this now after opening up the fork!
                              Your biking tells a lot about the person you are!

                              Comment

                              • #19485
                                Re: Yamaha YZF-R15

                                '**i read the previous posts has ny one come to know...
                                **why does the sound changes after pressing the clutch......???
                                **i talked this abt to mechanic...he was telling me about some couplings..he told me tht this noise comes ..but if it is too high then only it is a problem (O.o) >>too high when to knw
                                ** imagine ur bike is 1st gear and u r revving hard ..but no gain in speed ..then only thre is a 99% chance of replacing the clutch plates .
                                ****************my r15 has done 48000 km ..performance yet top notch...gear shifting is quite gud..! bike still clocks 130 ..!
                                MY SOLUTION TO CLUTCH RELATED PROBLEM
                                *i change my clutch wire on every 10000 km and early also if its needed
                                * get Clutch WIRE adjusted it every service from a experienced mechanic ...and early also if its needed....i suggest this to evry one to follow.
                                *clutch plates are not meant to be changed early ...Some SVC do bullshit just to make cash....change your clutch cable ..check pressure plates..then only replace clutch plates.
                                **dont ride with half pressed clutch ....if the bike needs a gear shift go down a gear and then rev !!!

                                I AM LOOKING FOR THE ANSWER TO WHY AFTER PRESSING THE CLUTCH THE ENGINE SOUND CHANGES..????????????
                                Last edited by pulkit kumar singh; 06-09-2013, 04:08 AM.

                                Comment

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