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Makotosun

Need help Diagnosing loss of power

  • Charlie72
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Need help Diagnosing loss of power was created by Charlie72

My 1972 DT2 250 seems to idle fine, but when I rev it to or past 4000 RPM in neutral, it sputters and loses power. Any thoughts on what may be the cause and what the noise may be coming from?
Lean mixture? Air leak? I included a video below for reference.

youtube.com/shorts/SUZ3dXcG0VY?feature=share

Last edit: 28 May 2023 20:10 by MarkT.
28 May 2023 19:40 #1

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Replied by MarkT on topic Need help Diagnosing loss of power

Sounds like ignition to me.

Have you changed the spark plug?
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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28 May 2023 20:11 #2

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Replied by RT325 on topic Need help Diagnosing loss of power

Check the points gap. I'll bet it's about almost zero.
The following user(s) Liked this Post: Charlie72
28 May 2023 20:12 #3

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