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Need help with Pulsar 150 DTSi

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  • #1

    Need help with Pulsar 150 DTSi

    Hello All,

    I am not sure if the below questions are answered or the situation was witnessed by anyone before. Mods please merge this thread with any similar/same thread already on-going, I couldn't find any.

    Ok, so I own a Bajaj Pulsar 150 DTSi, May 2011 manufactured, June 2011 bought. My Casstiel was born on 6th June and since then I have clocked 6125 kms only. Following are the questions I want fellow owners/experts to look into and help me while shedding some light over it.

    I have strictly followed the manufacturer run-in procedure and ride at ultra normal speeds of 38-40 KMPH (3K RPM) +- 5 KMPH. This used to give me a mileage of 58-62 KMPL till one bad week when my friend took it for a week and clocked 340-350 kms while I was at home. He happened to have filled in 1.5L of petrol from a bunk people avoid going to because of its bad reputation and quality. Before I gave him my bike it had around 6-7L of fuel excluding reserve. I had set my trip meter to calculate mileage and that resulted in somewhere around 42 KMPL. I tried again to calculate the distance from one refill to the other, but again I got 42-46 KMPL under same riding condition.

    I went to the mechanic and asked him to clean my carb as the fuel itself was faulty which my friend had put in. I know this was a wrong choice. The bike has gone through 4 engine oil change, 1st @ 642 kms (Bajaj DTSi oil), 2nd @ 1950 kms(Bajaj DTSi oil), 3rd @ 4230 kms (Yamalube 15W50 SS) and 4th at 5310 kms ( MAK 4T NXT).

    I happened to have seen an oil spill on the cooling fins after the second service, but never experienced it again. I idle my bike for around 2 mins everytime I take it out and crank it for the first time in a day, wash it regularly and clean the chain every 500 kms.

    I am a newly inspired biker and would ride till my hips/spine/bones/eye sight are good. Also, can anyone answer the below questions?

    1. Does hitting top speed bring down the mileage that low(from ~58 KMPL to ~45 KMPL)?

    2. How high in the rev range I can shift the gear without inviting trouble? Been doing in the range 3-4K RPM. Does this effect mileage and engine health?

    3. Engine oil which can last long? Bajaj DTSi sucks big time. Mineral oil looses composure after 500-700 kms. Tried Yamalube, MAK 4T NXT (holding good till now after 710 kms). I somehow feel Bajaj engines are quite harsh on the oil).

    4. What is the role of Spark plug in deciding the mileage? Its just 6125 kms old. Noticed rust and white powdery coating when I asked the mechanic to clean them as well as the air filter.

    5. How reliable is the digi display of fuel meter? I am left with 3 bars now and at times it has gone invisible without even going into reserve(hoping that my fuel knob works as it is supposed to).

    6. Does riding at speeds of 38-45 KMPH, a bad thing? I do occasional speed bursts to 65 KMPH, once in a while.

    I happened to have a full tank the day before fuel prices went sky-rocketing to 81.77 in Hyderabad, Bharat Petroleum. Gave 2 L to my friend as his Honda Shine came to a standstill in the middle of the road with a face of empty tank. So that leaves me with 11 L before I hit reserve. If I expect a mileage of 50 KMPL, it is supposed to carry me for 550 kms(11*50). Right now its somewhere dancing near 380 kms on trip meter and three bars showing on the digi fuel display.

    Mileage is the only issue(I call it issue because it has dropped significantly given my riding style is way too slow).

    Can anyone please help me in this context?

    Ragards,
    Akash Yadav
    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.
    Tags: None
  • #2
    Query Approved

    First of all, 350odd km is not very high mileage for 1 week of usage. Many People have commutes longer than that.

    A1: So is the real query that
    a: You got low FE when your friend Ripped the bike?
    OR
    b: You are consistently getting low FE after you gave your bike to your friend?

    If the query is 'a', the answer is obvious, the bike needed more energy to cover distances at higher speeds, energy came from Petrol. It used more Petrol!

    If the query is 'b', Then my friend, It is definitely not related to your friend ripping the bike. Have you tried checking the tire pressure all this while?

    A2: As long as the engine oil is good AND the run-in is complete, it makes no difference to the engine even if you shift at redline in each gear. It will be bad for mileage for that particular stint, but it will definitely not cause long-term ill-effects on mileage. The mileage you get now depends on how you ride now, not how the bike was ridden last week/month.

    A3: Since you are open to the idea of Semi-Synthetics, I would recommend you try the Motul 5100T. It comes in both 15w40 and 15w50, choose according to what grade is recommended in the manual (I think it is 20w40). If this is the case, you can safely ignore the number before the 'w' and pick 15w40.

    A4: Since you saw rust and white powdery coating on the spark plug, it means that your bike is running ideal air/fuel mixture (rust) in some throttle positions, and lean (white powder) in others. This is the way it is supposed to be. Don't worry, the spark plugs come from a reputed vendor and don't go bad so fast.

    A5: The digital fuel gauge is reliable enough when you get the hang of it. In the meantime, learn to trust your fuel tap, it always works the way it should. At 3 bars on the digi-fuel-gauge, you should have 4ish liters remaining above reserve.

    A6: Riding at slow speeds is certainly not a bad thing. Just ensure that you don't ride in too high a gear for the speed that you start lugging the engine. Lugging is worse for the engine than redlining. Also, riding in the correct gear also aids FE, so common wisdom of shifting to highest gear possible, as soon as possible, may not always be true for all bikes. Keep RPMs at least in the 3k-4k band when cruising, not lower. Remember, it is not the RPM where you ride that determines the FE you get, it is the throttle position.

    Hope I could help, I'll let the others take over from here.
    Advice is a form of nostalgia.
    Dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it's worth.

    Antz Travelz!! | South India Exploration Ride | Leh Triplog (Work in progress)

    Comment

    • #3
      @Antz.Bin : Thanks for the detailed answer. Phew!! That makes me a bit comfortable now. But I don't understand, why such a big drop in mileage. My riding style has definitely not changed. I check for air-tyre pressure everyday, idle it as recommended, and keep it in as good condition as possible. Its 20W50 for P150 as well. Will hunt for Motul in Hyderabad and change it as soon as I find one.
      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

      • #4
        Re: Need help with Pulsar 150 DTSi

        Originally posted by antz.bin View Post

        A5: The digital fuel gauge is reliable enough when you get the hang of it. In the meantime, learn to trust your fuel tap, it always works the way it should. At 3 bars on the digi-fuel-gauge, you should have 4ish liters remaining above reserve.

        A6: Riding at slow speeds is certainly not a bad thing. Just ensure that you don't ride in too high a gear for the speed that you start lugging the engine. Lugging is worse for the engine than redlining. Also, riding in the correct gear also aids FE, so common wisdom of shifting to highest gear possible, as soon as possible, may not always be true for all bikes. Keep RPMs at least in the 3k-4k band when cruising, not lower. Remember, it is not the RPM where you ride that determines the FE you get, it is the throttle position.
        Hi,

        I just purchased a Pulsar 150 Dtsi and I would be thankful if you could explain a few things.

        Regarding A5 : I just want to confirm that the bars in the digital fuel meter show the fuel excluding the reserve fuel.

        Regarding A6 : I am following the same strategy of keeping the RPMs as low as possible and I think I have not exceeded 4000 RPMs in the few days I have rode the bike and cruise at around 2000 RPMs. It would be really helpful if you can explain gear selection and lugging vs. red lining.
        Last edited by xRider711; 06-27-2015, 08:07 PM.
        When it comes to riding gear, you can either :
        A. Not wear and look cool but be stupid; or
        B. Wear it and look stupid but be smart.
        Your choice.

        Google+ : google.com/+RonakDhakan/about
        Facebook : https://www.facebook.com/ronak.dhakan
        Twitter : https://twitter.com/RDX711
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        Comment

        • #5
          Re: Need help with Pulsar 150 DTSi

          Originally posted by Akash.Yadav View Post
          Hello All,

          I am not sure if the below questions are answered or the situation was witnessed by anyone before. Mods please merge this thread with any similar/same thread already on-going, I couldn't find any.

          Ok, so I own a Bajaj Pulsar 150 DTSi, May 2011 manufactured, June 2011 bought. My Casstiel was born on 6th June and since then I have clocked 6125 kms only. Following are the questions I want fellow owners/experts to look into and help me while shedding some light over it.

          I have strictly followed the manufacturer run-in procedure and ride at ultra normal speeds of 38-40 KMPH (3K RPM) +- 5 KMPH. This used to give me a mileage of 58-62 KMPL till one bad week when my friend took it for a week and clocked 340-350 kms while I was at home. He happened to have filled in 1.5L of petrol from a bunk people avoid going to because of its bad reputation and quality. Before I gave him my bike it had around 6-7L of fuel excluding reserve. I had set my trip meter to calculate mileage and that resulted in somewhere around 42 KMPL. I tried again to calculate the distance from one refill to the other, but again I got 42-46 KMPL under same riding condition.

          I went to the mechanic and asked him to clean my carb as the fuel itself was faulty which my friend had put in. I know this was a wrong choice. The bike has gone through 4 engine oil change, 1st @ 642 kms (Bajaj DTSi oil), 2nd @ 1950 kms(Bajaj DTSi oil), 3rd @ 4230 kms (Yamalube 15W50 SS) and 4th at 5310 kms ( MAK 4T NXT).

          I happened to have seen an oil spill on the cooling fins after the second service, but never experienced it again. I idle my bike for around 2 mins everytime I take it out and crank it for the first time in a day, wash it regularly and clean the chain every 500 kms.

          I am a newly inspired biker and would ride till my hips/spine/bones/eye sight are good. Also, can anyone answer the below questions?

          1. Does hitting top speed bring down the mileage that low(from ~58 KMPL to ~45 KMPL)?

          2. How high in the rev range I can shift the gear without inviting trouble? Been doing in the range 3-4K RPM. Does this effect mileage and engine health?

          3. Engine oil which can last long? Bajaj DTSi sucks big time. Mineral oil looses composure after 500-700 kms. Tried Yamalube, MAK 4T NXT (holding good till now after 710 kms). I somehow feel Bajaj engines are quite harsh on the oil).

          4. What is the role of Spark plug in deciding the mileage? Its just 6125 kms old. Noticed rust and white powdery coating when I asked the mechanic to clean them as well as the air filter.

          5. How reliable is the digi display of fuel meter? I am left with 3 bars now and at times it has gone invisible without even going into reserve(hoping that my fuel knob works as it is supposed to).

          6. Does riding at speeds of 38-45 KMPH, a bad thing? I do occasional speed bursts to 65 KMPH, once in a while.

          I happened to have a full tank the day before fuel prices went sky-rocketing to 81.77 in Hyderabad, Bharat Petroleum. Gave 2 L to my friend as his Honda Shine came to a standstill in the middle of the road with a face of empty tank. So that leaves me with 11 L before I hit reserve. If I expect a mileage of 50 KMPL, it is supposed to carry me for 550 kms(11*50). Right now its somewhere dancing near 380 kms on trip meter and three bars showing on the digi fuel display.

          Mileage is the only issue(I call it issue because it has dropped significantly given my riding style is way too slow).

          Can anyone please help me in this context?

          Ragards,
          Akash Yadav
          You are not happy with 40+ mileage on pulsar...
          I have to live with around 32 with my fz..

          Sent from my SGH-I747M using xBhp Connect mobile app

          Comment

          • #6
            Re: Need help with Pulsar 150 DTSi

            Originally posted by Ishwor View Post
            You are not happy with 40+ mileage on pulsar...
            I have to live with around 32 with my fz..

            Sent from my SGH-I747M using xBhp Connect mobile app
            Umm, mate, you must have joined a bit late on that conversation. I sold the bike more than a year ago. I didn't even remember that I posted this query on XBHP.

            FZ is inherently thirsty bike. Pulsars are known for their fuel efficiency. 40-45 in P150 means the owner has a heavy right hand..

            I now own a humble P220.
            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

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