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DT125 Carb Leaking Gas

  • Bsconnor3
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DT125 Carb Leaking Gas was created by Bsconnor3

Hi all,
I recently had to clean my carb a couple times to finally get my bike to start. However, now it will only start on the "Reserve" gas setting on the petcock even though there's a decent amount of gas in the tank. On top of that, gas is leaking quite profusely from the carb in multiple places. When I cleaned it I noticed the gasket between the two pieces of the carb body was fairly worn and thin but it was definitely not doing this before I took it apart and cleaned it. I'm assuming I may have made a mistake when cleaning it and will have to take it back off but what should I be looking for and what kind of issue does this sound like? Thanks!
23 Oct 2019 17:03 #1

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Replied by liferbiker on topic DT125 Carb Leaking Gas

Needle & seat debris holding it open or damaged, float level too high
23 Oct 2019 22:47 #2

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Replied by asco on topic DT125 Carb Leaking Gas


It's possible the needle but I would also figure the float setting is off.

Measure upside down 1" up to the bottom of the float resting on a clean working needle

Then replace the bowl gasket ..

a
YAMA-LAND RESTORATION,
( 818 ) 521-2109
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1971 CT1-C (BRANDY)
1970 DT1-C (MONICA)
1972 AT2M (ZIFFLE)
1970 CT1-B (HULK)
1971 DT1E (GINA)
1970 CT1-B (CLIDE)
Last edit: 24 Oct 2019 18:07 by asco.
24 Oct 2019 18:07 #3

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Replied by Capt.Dave on topic DT125 Carb Leaking Gas

Get a new needle and seat, also a new Oring.
Capt Dave
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24 Oct 2019 18:29 #4

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Replied by RT360Fan on topic DT125 Carb Leaking Gas

What year? I had a '76 DT125 and I don't recall a needle jet o-ring, but the earlier models had them.

First guess would be the float level. Inspect the float needle/seat for wear, replace if necessary.
Last edit: 24 Oct 2019 22:08 by RT360Fan.
24 Oct 2019 22:06 #5

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