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bike wont run on no choke

Discussion in 'Technical and Troubleshooting Torque' started by idontlikemondays, Jul 28, 2008.

  1. well the XR4 finally had the dodgey auto decomp system ripped off the camshaft, and she's barking again, but...

    the bloody POS wont run without choke.

    she'll rev clean through to the limiter, it run's fine except a touch of black smoke (obviously running rich), which to me sounds like the main jets arent blocked cause otherwise it wouldnt rev freely.

    but the second you turn off the choke (full or half, there is only two settings on the XR) its like hitting the kill switch.

    does anyone have anyideas on what might be wrong? or any suggestions on what i could try to fix it before taking the carbys apart?

  2. Do you have to leave the choke on when you rev it ??
    Check that the carby isnt sucking air from around the manifold rubber or theres a hose not connected ..It sounds like its getting to much air from somewhere..