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Bike engine repair: HELP

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  • Bike engine repair: HELP


    I am facing a problem in my bike for which service center guys are telling me for engine overhaul. plz read below and suggest...

    Bike: Pulsar 150 DTS-i with digital display

    Purchased on: Dec. 2006

    Bike History: Had a major accident in aug 2007. got it repaired from an authorized service center (though not my regular service center). chasis was broken into two pieces from just near to handle. so now hava a new chasis, front rim, forks, disks, handle assembly, headlight assembly, tank, side panels tyres, indicators, leggaurd, footrest. these are the items replaced in my bike after accident. the service center guy told me at that time - that since engine was running fine, he did not open it although gearbox cover had a crack near one screw hole. i started using my bike again after around 9 months after accident i.e. may 2008. the bike was running fine. once i had the idea of using Motul 300V Factory Line Oil, on the very next servicing, the service center guys told me that there is no oil in my gearbox, i was shocked to hear that. i bike must have run around 150 km without oil or say negligible oil, of which 80 KM was a straight non-stop drive. then i got my bike serviced changed the oil. since then i am keeping a watch on my bike oil consumption. It is consuming 300 ML for around 1000 KMS and the oil turns BLACK. there is no white smoke from exhaust and there is no leakage elsewhere. and from last few months i m experienceing a loss of pick-up and drop in mileage. a lot of noise also comes from engine, jhan-jhan, dhag-dhag-dhag, gad-gad-gad. some time back i had my rear wheel sprocket bearing replaced.

    Now if the engine is consuming oil, shudn't there be white smoke? and the sound seems to be coming from crank shaft (there may be play in crakshaft), service center guy tells me that my clutch plates have also worn out.
    the gearbox feels very rough and dry. gear changes are hard and sounds thak-thak. i m amazed as to where the oil is going? also clutch engages with a sudden jerk.

    please note: I use my bike daily for going to office and back which is around 20 Km round trip. i live in a very hilly area. lot of clutch and brake usage.

    twice a week - around 200-250 kms round trip of which 150 kms straight drive on speed above 85 KMPH ocasionally touching 110 KMPH and staying above 100 KMPH for atleast 10 mins after every 15-20 mins.

    once a month long drive of around 500 KMPH round trip.

    although i use clutch and brake too much i dont think clutch plates or for that matter engine block piston shud wear out in 25000 KMS.

    please help me .......this bike is very dear to my heart.




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  • #2
    Query Approved.
    :)

    Comment


    • #4
      Hi Prince,
      I can outline a few steps that may help you outline the problem in your motorcycle:

      1) Check if your bike is leaking oil from the crankcase. Check the drain bolt below and other seals etc. You may be leaking some oil from your crankcase
      2) Get your bike's emission test done. Check if the HC is on the higher side. This will confirm that your bike is indeed burning oil. You could also be burning oil thourhg your valves or cylinders
      3) If possible, try and remove the exhaust pipe from the cylinder head. This will give you access to the location of the exhaust valve. If you see or on closer physical inspection find lots of black soot and unburned engine oil, then certainly you are burning engine oil

      Hope this helps you out.

      Regards,
      Siddharth
      Siddharth
      Digital Display Units and LED Brake Lights at www.PhiTesla.com

      Comment


      • #5


        @ Arnie:

        1) oil is not leaking from crankcase.
        2) i will definitely do the emission test. actually at the last servicing the mechanic smelled the oil and said engine is burning oil.

        i will try to check the soot from exhaust valve.


        senior members are requested to help.







        sigpic

        Tyre Sizes _ Spark Plugs

        Headlight Focus _ Fork Oils

        All India xBhp Couple Riders Thread

        Ashtavinayak + Shirdi
        Purandar
        Raigad
        Dapoli
        Aurangabad
        Kaas Plateu & Thoseghar Waterfalls
        Purandar

        Comment


        • #6
          Originally posted by princesirohi View Post

          I am facing a problem in my bike for which service center guys are telling me for engine overhaul. plz read below and suggest...

          Bike: Pulsar 150 DTS-i with digital display

          Purchased on: Dec. 2006

          Bike History: Had a major accident in aug 2007. got it repaired from an authorized service center (though not my regular service center). chasis was broken into two pieces from just near to handle. so now hava a new chasis, front rim, forks, disks, handle assembly, headlight assembly, tank, side panels tyres, indicators, leggaurd, footrest. these are the items replaced in my bike after accident. the service center guy told me at that time - that since engine was running fine, he did not open it although gearbox cover had a crack near one screw hole. i started using my bike again after around 9 months after accident i.e. may 2008. the bike was running fine. once i had the idea of using Motul 300V Factory Line Oil, on the very next servicing, the service center guys told me that there is no oil in my gearbox, i was shocked to hear that. i bike must have run around 150 km without oil or say negligible oil, of which 80 KM was a straight non-stop drive. then i got my bike serviced changed the oil. since then i am keeping a watch on my bike oil consumption. It is consuming 300 ML for around 1000 KMS and the oil turns BLACK. there is no white smoke from exhaust and there is no leakage elsewhere. and from last few months i m experienceing a loss of pick-up and drop in mileage. a lot of noise also comes from engine, jhan-jhan, dhag-dhag-dhag, gad-gad-gad. some time back i had my rear wheel sprocket bearing replaced.

          Now if the engine is consuming oil, shudn't there be white smoke? and the sound seems to be coming from crank shaft (there may be play in crakshaft), service center guy tells me that my clutch plates have also worn out.
          the gearbox feels very rough and dry. gear changes are hard and sounds thak-thak. i m amazed as to where the oil is going? also clutch engages with a sudden jerk.

          please note: I use my bike daily for going to office and back which is around 20 Km round trip. i live in a very hilly area. lot of clutch and brake usage.

          twice a week - around 200-250 kms round trip of which 150 kms straight drive on speed above 85 KMPH ocasionally touching 110 KMPH and staying above 100 KMPH for atleast 10 mins after every 15-20 mins.

          once a month long drive of around 500 KMPH round trip.

          although i use clutch and brake too much i dont think clutch plates or for that matter engine block piston shud wear out in 25000 KMS.

          please help me .......this bike is very dear to my heart.




          Motul 300V FL s and Pulsars are not that great friends, though Motul is a very nice person
          When everything comes ur way, u r in the wrong way ;)

          Comment


          • #7
            at what rpm does your bike do 80?
            and is the engine getting hotter than usual??

            harsh gears and jerky clutch are simptoms of less or bad engine oil
            http://richard-david.blogspot.com

            Comment


            • #9
              Originally posted by Richard View Post
              at what rpm does your bike do 80?
              and is the engine getting hotter than usual??

              harsh gears and jerky clutch are simptoms of less or bad engine oil
              80 KMPH at around 6500 RPM..

              no there is absolutely no problem of engine overheating. you drive the bike on full throttle to whatever length u want. absolute ZERO overheating.

              yes harsh gears and jerky clutch means bad oil...but remember oil is getting burnt and turning black and also reducing in quantity.

              CAN SOMEONE TELL ME WHEN WILL ENGINE BURN OIL. .. IS IT WHEN PISTON RINGS WORN OUT..???
              sigpic

              Tyre Sizes _ Spark Plugs

              Headlight Focus _ Fork Oils

              All India xBhp Couple Riders Thread

              Ashtavinayak + Shirdi
              Purandar
              Raigad
              Dapoli
              Aurangabad
              Kaas Plateu & Thoseghar Waterfalls
              Purandar

              Comment


              • #10
                Originally posted by princesirohi View Post
                80 KMPH at around 6500 RPM..

                no there is absolutely no problem of engine overheating. you drive the bike on full throttle to whatever length u want. absolute ZERO overheating.

                yes harsh gears and jerky clutch means bad oil...but remember oil is getting burnt and turning black and also reducing in quantity.

                CAN SOMEONE TELL ME WHEN WILL ENGINE BURN OIL. .. IS IT WHEN PISTON RINGS WORN OUT..???
                ^^ Most probably it is a problem with the engine, and like you said, do check the piston rings. I do not think it is a problem of the brand of engine oil.

                Since you have had a bad crash before, there might be things that are not 'visible'. You might need to open up the engine. Since this bike is dear to your heart, I suggest you taking all the necessary steps, albeit will cost you.

                EDIT: Piston rings keep the oil out of the combustion chamber so it might be a possibility.
                Last edited by pranay; 04-13-2009, 05:24 PM.
                DoN\'t LivE tO DiE, dIe tO LiVe

                Comment


                • #11
                  @ Arnie: i checked the emmission ....it was OK.

                  removed silencer and checked exhaust port....carbon deposit was present but it was ok....
                  sigpic

                  Tyre Sizes _ Spark Plugs

                  Headlight Focus _ Fork Oils

                  All India xBhp Couple Riders Thread

                  Ashtavinayak + Shirdi
                  Purandar
                  Raigad
                  Dapoli
                  Aurangabad
                  Kaas Plateu & Thoseghar Waterfalls
                  Purandar

                  Comment


                  • #12
                    Hi Prince,

                    Check your emission results against the emission report from your previous emission test (normally you have to renew every 6 months right). This will tell you which values have changed, and help you diagnose the porblem correctly.

                    Just for being sure, most of the modern bikes have PCV. Please check your air filter and the breather hose for oil. In case you have excessive oil here, then they could also be contributing to your abnormal oil consumption rates.

                    What is the mileage you are getting from your bike? Have you noticed any loss in pickup or idling speed?
                    I think the piston rings have worn out, in all probability the oil retainer ring in the bike has worn out. If so then they will manifest in the form of lower pickup and lower mileage figures.

                    Regards,
                    Siddharth
                    Siddharth
                    Digital Display Units and LED Brake Lights at www.PhiTesla.com

                    Comment


                    • #13
                      @ Arnie: What is a breather Hose?

                      ya i too think that piston rings and oil retainer rings have worn out.

                      can u tell me the symptoms of clutch plate being worn out.

                      yes the pick up and mileage is reduced. but my bike still cruises happily at 110 KMPH.
                      sigpic

                      Tyre Sizes _ Spark Plugs

                      Headlight Focus _ Fork Oils

                      All India xBhp Couple Riders Thread

                      Ashtavinayak + Shirdi
                      Purandar
                      Raigad
                      Dapoli
                      Aurangabad
                      Kaas Plateu & Thoseghar Waterfalls
                      Purandar

                      Comment


                      • #14
                        Hi Prince,

                        The breather hose goes from your crankcase to your airfilter. In short check if any hose goes to your air filter, if you find one then its probably the breather hose.

                        Clutch plates being worn out:
                        When you put the bike in say 1st gear and start releasing the clutch, the transition should be smooth and the bike should start picking up smoothly if your clutch is OK. On the contrary if your clutch is not OK then, when you start releasing the clutch lever you should feel a jerk when the engine starts taking the load and the bike starts moving forward

                        Even with worn out rings your bike will cruise at 110kmph, this time have someone follow you at the back and see how much smoke you are emitting while cruising at that speed. If you are the certainly somewhere oil is being burnt.

                        Regards,
                        Siddharth
                        Siddharth
                        Digital Display Units and LED Brake Lights at www.PhiTesla.com

                        Comment


                        • #15
                          Originally posted by Arnie View Post
                          Hi Prince,

                          The breather hose goes from your crankcase to your airfilter. In short check if any hose goes to your air filter, if you find one then its probably the breather hose.

                          Clutch plates being worn out:
                          When you put the bike in say 1st gear and start releasing the clutch, the transition should be smooth and the bike should start picking up smoothly if your clutch is OK. On the contrary if your clutch is not OK then, when you start releasing the clutch lever you should feel a jerk when the engine starts taking the load and the bike starts moving forward

                          Even with worn out rings your bike will cruise at 110kmph, this time have someone follow you at the back and see how much smoke you are emitting while cruising at that speed. If you are the certainly somewhere oil is being burnt.

                          Regards,
                          Siddharth

                          1) yes i will check breather hose.
                          2) bike starts smoothly in 1st gear, but clutch engages with jerk in gear changes from 1st to 2nd, 2nd to 3rd and so on and gears change with a big clank sound.
                          3) ya i will tell my frend to watch out for smoke.
                          sigpic

                          Tyre Sizes _ Spark Plugs

                          Headlight Focus _ Fork Oils

                          All India xBhp Couple Riders Thread

                          Ashtavinayak + Shirdi
                          Purandar
                          Raigad
                          Dapoli
                          Aurangabad
                          Kaas Plateu & Thoseghar Waterfalls
                          Purandar

                          Comment

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