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Pulsar 150 UG3 overheating

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  • #1

    Pulsar 150 UG3 overheating

    I have a Pulsar 150 DTS-i UG3 digital console bike, had done around 65,000 kms and is abt 3.0 years old. My bike engine overheats. this problem is from last....say 8-9 months....whenever i do a long ride or high speed run, the engine heats up so much that when i stop, there is burning smell coming from bike. this is the smell of burning clutch plates kind of smell. i had done a spit test ( spit on the engine after stopping when the engine is hot, and my spit vapourize instantly)
    • is there a way to find out whether the engine is actually overheating and by how much.
    • what can be the reason.
    • how to rectify it.

    i have converted my bike to full DC and done rewinding of stator coil for HID. i don't remember exactly, whether the overheating problem existed before rewinding also. also just for info- after 3000 kms when i drain the oil, only about 200 ml remains, so i make it a point to service my bike every 2000-2500 kms.

    history of bike --
    • just changed clutch plates and silencer and hose pipe between carb and filter box. ( the problem was there before these changes)
    • i regularly do all my servicing at every 2500 kms, use good quality oil and barhdall.
    • i had modified my bike's stator plate for HID by rewinding.
    • had changed block piston, clutch plates, repaired crank shaft 1.5 years back.
    • had a mojor accident few years back, in which chasis broke and replaced. ( all repairs properly done at authorized service center, and bike was working fine untill recently)
    i love my bike, kindly help.
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  • #2
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    • #3
      Im not pretty sure but certain pulsars suffered from clutch oil starvation. Simply put, oil doesnt reach the clutch and friction plates which causes them to warp and wear faster. Find out if that is the problem by inspecting the clutch plates.

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      • #4
        There are digital thermometers which can give you accurate reading of your bike's engine temperature....Inspect the center electrode of the plug.I think your plug will be white in color..and running lean AFR. Most of the pulsars start consuming oil as it ages..Check compression to know the condition of your bore and piston ring status. Clutch plate frying in Pulsar is also reported.Some people do clutch porting as they call it....by drilling small holes in the clutch bell,without making it weak.
        When Was The Last Time,You Did Something For The First Time.

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        • #5
          there is also a chance that your engine running on lean mixture try tuning the carb and see.
          on 4 wheels u feel the speed after a crash, 2 wheelers are much more advanced

          Ananthagiri Trip

          Kemmannagundi-Mulliyanagiri

          Ooty trip

          Tirumala-horsley Hills

          Kudremukh

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          • #6
            Not sure about heating..

            but engine oil level should 'NEVER' drop below 800 ml(approx.).. Its dangerous for your bike and may be heating is because of that only. I am only starteled and amazed how your bike is still running if you let the engine oil level drop to 200ml..


            here is what I do with P150 UG3..
            1. service every 3K kms.
            2. After every 1000 KMs,
            - check engine Oil level through window and add some oil myself if it looks less.. Jsut buy a spare oil bottle at home.. whenever required, top up the oil.
            - take the bike for washing and chain lubrication.

            Break above routing if bike is not feeling 100%.


            as per my experience and knowledge on high speed riding 100+, Pulsars have habit of drinking oil and that must be topped up..


            ride on..

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            • #7
              Is it like you have changed the oil grade i.e switched manufacturers after your overhauling?

              The burning smell and all can also be cause of your crank shaft bearing has a issue, try doing this after you put fresh engine oil try running on moderate speed say 70 km/h for an hour or so do this for 2 or 3 days and then again check the engine oil level and if possible drain out and see if the oil is burnt.

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              • #8
                Originally posted by crankpin View Post
                Im not pretty sure but certain pulsars suffered from clutch oil starvation. Simply put, oil doesnt reach the clutch and friction plates which causes them to warp and wear faster. Find out if that is the problem by inspecting the clutch plates.
                typically how long shall a set of clutch plates last..??


                Originally posted by psr View Post
                There are digital thermometers which can give you accurate reading of your bike's engine temperature....Inspect the center electrode of the plug.I think your plug will be white in color..and running lean AFR. Most of the pulsars start consuming oil as it ages..Check compression to know the condition of your bore and piston ring status. Clutch plate frying in Pulsar is also reported.Some people do clutch porting as they call it....by drilling small holes in the clutch bell,without making it weak.
                well, i don't exactly want to buy a thermometer, is there any other way to check engine temperature. Compression is ok, bore and piston etc is ok, because pick-up and top-end is perfectly ok. also oil is not getting consumed in engine because then it will smoke heavily. can you explain a little bit more about clutch porting.

                Originally posted by pabi View Post
                there is also a chance that your engine running on lean mixture try tuning the carb and see.
                i don't think my engine is running lean, because i always tell my mechanic that " if mileage is reduced, doesn't matter, increase pipck-up". still i will get it checked. can you tell the correct setting of air-fuel screw. how many turns?

                Originally posted by Nitin_traveller View Post
                Not sure about heating..

                but engine oil level should 'NEVER' drop below 800 ml(approx.).. Its dangerous for your bike and may be heating is because of that only. I am only starteled and amazed how your bike is still running if you let the engine oil level drop to 200ml..


                here is what I do with P150 UG3..
                1. service every 3K kms.
                2. After every 1000 KMs,
                - check engine Oil level through window and add some oil myself if it looks less.. Jsut buy a spare oil bottle at home.. whenever required, top up the oil.
                - take the bike for washing and chain lubrication.

                Break above routing if bike is not feeling 100%.


                as per my experience and knowledge on high speed riding 100+, Pulsars have habit of drinking oil and that must be topped up..


                ride on..
                even i do the same, wth only difference that i service my bike at 2000 kms, at that time oil remaining is around 500-600 ml, and if for some reason i am not able to service it at 2000 kms and have done 3000 kms, i top it up in between, if i don't top it up oil level further decreases to 200-300 ml. what i am saying is i don't ride it will 200 ml oil, but if i don't top it up, i will find only 200-300 ml at the end of 3000 kms. oil consumption is not an issue, i have become habitual to it. even after changing block piston, the bike still consumes oil.

                this i guess is mainly because of my riding-- LONG DISTANCE HIGH SPEED RIDING. my riding consists of 90% HIGHWAY and 10% CITY RIDING.


                KINDLY TELL ME HOW TO STOP THE ENGINE FROM OVERHEATING.
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                • #9
                  Pulsar UG III heating

                  Prince have a look at the spark plug and see if center electrode is white. When exhaust is cold ,keep your finger 1" inside the opening ,and run your finger along the opening and see if you get any sticky residue on your finger.Clutch porting as explained by an end user ,is drilling small holes on the Clutch Bell housing and also on the individual finger like structure of the housing.This is supposed to increase the oil flow in between the friction plates of the clutch... This was done on the first and UG I models ...How far it will be useful in your case will be known only after trying...if it is clutch problem....A good mechanic will be able to check and tell you if the clutch plates are worn,burnt,or it is ok.
                  When Was The Last Time,You Did Something For The First Time.

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                  • #10
                    Hello Prince, I am also facing the same problem. When i rev my bike hard then a burning smell comes but i have done the spit test and the spit dint vaporise instantle.........But still im going tro take my bike to my mechanic coz i have installed a new piston block only 2k kms back......Will inform u after i talk to him!

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                    • #11
                      Originally posted by princesirohi View Post
                      i don't think my engine is running lean, because i always tell my mechanic that " if mileage is reduced, doesn't matter, increase pipck-up". still i will get it checked. can you tell the correct setting of air-fuel screw. how many turns?
                      i am no master in tuning carbs , i just try to follow the methods posted on xbhp.com and **********.in . Just try with them and see if there is any change. Also heard Probiking showroom have CO tester which can test A/F mixture correctly.
                      on 4 wheels u feel the speed after a crash, 2 wheelers are much more advanced

                      Ananthagiri Trip

                      Kemmannagundi-Mulliyanagiri

                      Ooty trip

                      Tirumala-horsley Hills

                      Kudremukh

                      Comment

                      • #12
                        "even i do the same, wth only difference that i service my bike at 2000 kms, at that time oil remaining is around 500-600 ml, and if for some reason i am not able to service it at 2000 kms and have done 3000 kms, i top it up in between, if i don't top it up oil level further decreases to 200-300 ml. what i am saying is i don't ride it will 200 ml oil, but if i don't top it up, i will find only 200-300 ml at the end of 3000 kms. oil consumption is not an issue, i have become habitual to it. even after changing block piston, the bike still consumes oil.

                        this i guess is mainly because of my riding-- LONG DISTANCE HIGH SPEED RIDING. my riding consists of 90% HIGHWAY and 10% CITY RIDING.
                        "


                        man, thats what my point was.. I guess I am not able to explain that fully..

                        I also ride a P150-UG3.. and with Long distance high speed thingy..
                        refer( http://www.xbhp.com/talkies/help-me/...-required.html)

                        after 1000 KMs.. the oil level decreases.. MAYBE to 800ml..
                        and I top it up by approx 200ml..

                        as per my assumption 'its the engine OIL that keeps engine cool'.. if it is less than 800ml, the engine will become hot. so top it up back to 1000 ml..

                        try keeping it always on 1000 ml and check if the bike still heats.

                        ride on..

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                        • #13
                          @ psr:what if the spark plug is white, it means lean mixture. i will check that. and what if there is sticky thing in silencer. wht does it mean. no need to check clutch plates now. i have changed clutch plates recently a few months back.

                          i m not sure about clutch porting. never heard that thing before, and bike was just fine around 1 year back. rip it as hard as you can, and no burning smell ever comes.

                          @pabi: even my service center has a CO analyzer. i have already checked iton a CO analyzer, it is ok.

                          @ nitin_traveller: i know yaar, pulsars are prone to drinking oil as it gets older. and all this oil just disappears without even smoke, we can't just keep toping it up like a radiator coolant. even i am fine with it. but what about overheating.

                          @ rockstar:will wait for your results

                          i feel like attaching an extra bottle of oil on the side and connect it with a tube to gearbox. i will call it "online oil topping",....wht say...lol.

                          guys my main problem is not oil consumption, but overheating.

                          HELP ME OUT.
                          sigpic

                          Tyre Sizes _ Spark Plugs

                          Headlight Focus _ Fork Oils

                          All India xBhp Couple Riders Thread

                          Ashtavinayak + Shirdi
                          Purandar
                          Raigad
                          Dapoli
                          Aurangabad
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                          • #14
                            Originally posted by princesirohi View Post
                            @ psr:what if the spark plug is white, it means lean mixture. i will check that. and what if there is sticky thing in silencer. wht does it mean. no need to check clutch plates now. i have changed clutch plates recently a few months back.

                            i m not sure about clutch porting. never heard that thing before, and bike was just fine around 1 year back. rip it as hard as you can, and no burning smell ever comes.

                            guys my main problem is not oil consumption, but overheating.

                            HELP ME OUT.
                            If the Center of plug is white your engine is running lean AF mix and explains the heating problem

                            If you run your finger at the Exhaust tip and get sticky black coating on your fingers,then it means there is gap between the bore and piston rings,and explains your oil consumption.
                            Last edited by psr; 11-23-2010, 05:42 PM.
                            When Was The Last Time,You Did Something For The First Time.

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                            • #15
                              thanks psr, i will check.

                              hey guys anything else u wanna tell......
                              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

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