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DT125R FORUM

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  4. Bike has little to no power.

Bike has little to no power.

Scheduled Pinned Locked Moved DTR
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  • Y Offline
    Y Offline
    YYHpilo
    wrote last edited by
    #1

    Hello, i have a dt125r out of 1996. I have it for several months now. And have road it for about 2 months now. Before i began riding it, i fully deristricted it. I followed the guide on this forum. I got a different pipe from romeu henriques, looked if there was a reed switch or a grey box. Nether of those where on the bike, so it probably is the CDI that is still restricted. But my problem is that it has almost no power it goes max 97 km/h ( 60 mp/h) it hits the power band at around 7/8000 rpm. But the powerband is not incredible fast, it just goes a tiny bit faster. Also it cannot rev higher then 9/10 rpm and in the last to second last gear it does not surpass 5000 rpms. I thought maybe it is the powervalve, but it moves when i turn it on. And also when i feel with my hand it is flush with the exhaust port walls. I tried disconnecting the servo and riding it with the power valve pinned open, then it had no power overall. It was almost unrideble, i tried pinning it in the closed position thats when it gave alot more botten end power. But overall still not great. What could it be that i am missing?

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote last edited by
      #2

      This symptom sounds like the reed switch, but I've never had to derestrict one myself.

      Have you got a compression tester to check the engine's health?

      The easiest way to derestrict these bikes is to simply get an aftermarket CDI and then you don't have to worry about the reed switch.

      Always Originate, Never Pirate!

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