Since '02 xBhp is different things to different people. From a close knit national community of bikers to India's only motorcycling lifestyle magazine and a place to make like-minded biker friends. Join us

Axor
Magazine
Castrol Power 1

Careful with that leaking water tanker ahead.

Our Partner

Announcement

Collapse
No announcement yet.

Duke 390 juddering when throtle let go in high RPM

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
  • #1

    Duke 390 juddering when throtle let go in high RPM

    I bought a used low run Duke 390 about 2 years ago. From day one there has been one or the other issue with the bike. The latest one is from yesterday.while riding, in first gear if I go to 5k or 6k rpm and let go of throttle, the bike starts to vibrate(not because of loose parts) or Judder. It feels almost like the engine is stalling(like when we are in a higher gear but lower speed for that gear). But I am in 1st gear. This happens only if I reach about 40km or higher and then let go of throttle.
    I checked chain tension and it is all right. I don’t know what is causing this!
    Please help!
    Tags: bike juddering, duke 390
  • #2
    Re: Duke 390 juddering when throtle let go in high RPM

    Topic Approved.
    ---
    Brotherhood, Rules, Freedom. Xbhp.
    Indian riding = Alertness, Anticipation and Adjustment.

    Comment

    • #3
      Re: Duke 390 juddering when throtle let go in high RPM

      Originally posted by arjun jois View Post
      I bought a used low run Duke 390 about 2 years ago. From day one there has been one or the other issue with the bike. The latest one is from yesterday.while riding, in first gear if I go to 5k or 6k rpm and let go of throttle, the bike starts to vibrate(not because of loose parts) or Judder. It feels almost like the engine is stalling(like when we are in a higher gear but lower speed for that gear). But I am in 1st gear. This happens only if I reach about 40km or higher and then let go of throttle.
      I checked chain tension and it is all right. I don’t know what is causing this!
      Please help!
      Do these things,
      1. Check valves and valve seals.
      2. Check shrimps
      3. Clean Throttle body, Fuel injector and Fuel pump.
      4. Check your ignition coil and ECU.

      It will solve your issue.

      Comment

      • #4
        Re: Duke 390 juddering when throtle let go in high RPM

        Originally posted by niranjanreddy891 View Post
        Do these things,
        1. Check valves and valve seals.
        2. Check shrimps
        3. Clean Throttle body, Fuel injector and Fuel pump.
        4. Check your ignition coil and ECU.

        It will solve your issue.
        By judder I meant the bike rear wheel tends to gets struck and released (like when the engine is about to stall) but as soon I pull the clutch it is back to normal.

        The engine was overhauled at 18KM (present Odo 31K) with new cylinder and Head. . In the last service (5k ago) I got throttle body cleaned. Valves and their clearance is fine.
        I suspect it is because of the rear suspension. I saw it leaking yesterday. I’ll replace it and see
        Last edited by arjun jois; 03-12-2020, 11:32 PM.

        Comment

        • #5
          Re: Duke 390 juddering when throtle let go in high RPM

          Originally posted by arjun jois View Post
          By judder I meant the bike rear wheel tends to gets struck and released (like when the engine is about to stall) but as soon I pull the clutch it is back to normal.

          The engine was overhauled at 18KM (present Odo 31K) with new cylinder and Head. . In the last service (5k ago) I got throttle body cleaned. Valves and their clearance is fine.
          I suspect it is because of the rear suspension. I saw it leaking yesterday. I’ll replace it and see
          ok. Please update the status after changing rear suspension

          Comment

          • #6
            Re: Duke 390 juddering when throtle let go in high RPM

            Originally posted by niranjanreddy891 View Post
            ok. Please update the status after changing rear suspension
            Got the Rear Suspension changed. the problem solved!
            i also changed the sprocket kit. got the new Rolon Sprocket kit and all the wheel bearings replaced at front and back Tyre. the bike feels smooth and the JUDDER has been solved.

            Comment

            • #7
              Re: Duke 390 juddering when throtle let go in high RPM

              Originally posted by arjun jois View Post
              Got the Rear Suspension changed. the problem solved!
              i also changed the sprocket kit. got the new Rolon Sprocket kit and all the wheel bearings replaced at front and back Tyre. the bike feels smooth and the JUDDER has been solved.
              Great. I am not sure about how good is Rolon sprockets. Can you tell me about its cost, expected life time and performance?

              Comment

              • #8
                Re: Duke 390 juddering when throtle let go in high RPM

                Originally posted by niranjanreddy891 View Post
                Great. I am not sure about how good is Rolon sprockets. Can you tell me about its cost, expected life time and performance?
                This is the 3rd Sprocket kit on my bike. first two were KTM Sprockets.
                I dont know about rolon, but my friend was advised by the Yamaha Service guy to go for rolon for his R15. even the shop where i got it suggested rolon instead of KTM. so i wanted to see for myself

                It costed me Rs.2510.
                the KTM service quoted ~3500 including labour for their kit.

                About the performance, i dont see any difference, it is the same 15-45-112link kit exactly like KTM. The store told me if maintained properly it will last for 20k-22k.

                Comment

                Previous template Next
                Working...
                X
                © xBhp.com 2026. All rights reserved.
                Designed by xBhp