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Makotosun

73 DT250 not running right

  • 999Homer
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73 DT250 not running right was created by 999Homer

Hi just started my bike up and seems to only want to run on choke turn off the choke and it cuts out was fine before but hasn’t been started in a few months any ideas
19 Aug 2022 09:05 #1

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Replied by AirborneSilva on topic 73 DT250 not running right

Carb gummed up...
2023 Tenere T7
1976 DT400C
1975 DT400B
1973 RT3
1981 DT175H
1980 GT80
1972 CT2
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19 Aug 2022 09:14 #2

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Replied by MarkT on topic 73 DT250 not running right

pilot jet plugged up/restricted
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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19 Aug 2022 10:21 #3

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Replied by RT325 on topic 73 DT250 not running right

I'll go--everything bunged up. Time for a good clean. Could pull the carb bung-mainjet first to let a bit drain through clean & check the main jet as has to go through there to get up the needle & into the motor.
19 Aug 2022 16:30 #4

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Replied by 999Homer on topic 73 DT250 not running right

Petroleum tap is also leaking like a bastard when I turn fuel on am I right in thinking just need to replace the rubber with the 4 holes in in the tap
20 Aug 2022 13:16 #5

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Replied by Sneezles61 on topic 73 DT250 not running right

There is a rubber O-ring around the fuel selector lever…
I’ve been fighting with mine… I ordered a new petcock… once I get it, and if it all fits and doesn’t leak, I’ll tell about it…
Sneezles61
20 Aug 2022 15:19 #6

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Replied by AirborneSilva on topic 73 DT250 not running right

I've been fighting mine as well, rebuilt it but still wants to leak at times so I'll be looking at buying a new one too.
2023 Tenere T7
1976 DT400C
1975 DT400B
1973 RT3
1981 DT175H
1980 GT80
1972 CT2
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20 Aug 2022 16:04 #7

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Replied by RT325 on topic 73 DT250 not running right

New rubber should fix it. I turned mine over which helped but they can get ripped between the holes & then ya out of luck. Gotta be careful not to trap the wavy washer screwing the plate on too. I used to give the wavy a bit of a bend to increase tension but probably only works in theory.
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20 Aug 2022 17:31 #8

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