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Makotosun

Dt3 VM26

  • MarkT
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Replied by MarkT on topic Dt3 VM26

You'll need to post video to YouTube or other hosting site and then post link here.
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
29 Aug 2021 07:29 #11

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Replied by principal282 on topic Dt3 VM26

Slightly wet but not overly wet.
video of me kicking 20 times with full throttle is a dud. It's kick kick kick nothing 
29 Aug 2021 07:36 #12

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Replied by MarkT on topic Dt3 VM26

Engines don't burn liquid fuel well.  It needs to be vaporized.

It's flooded and/or you have an ignition problem.   

Running a BR plug with a resistor cap will reduce available spark energy...  not that it won't run that way.  All you need is enough spark to make it run. More spark than "enough" won't make it run better. When conditions get tougher (like flooded) then that lesser energy can make the difference.  Make sure plug gap is 0.020" to 0.024".  Dry off plug and try to gap at 0.020"  Narrower gap is easier for spark to jump.  Replace plug if you haven't.

Choke off, petcock off, throttle wide open, give it a few kicks.  Pull plug.  If wet, dry it off and try again.  Don't turn fuel back on until it starts or plug starts coming out dry.

 
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
29 Aug 2021 07:53 #13

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Replied by principal282 on topic Dt3 VM26

Thanks Much Mark.  I'm in town today and will pick up a gap tool. 
29 Aug 2021 10:20 #14

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Replied by principal282 on topic Dt3 VM26

Yippee we are much closer. But now as the song says, "now look at this." 

Smoke pouring out the exhaust area. 

29 Aug 2021 15:24 #15

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Replied by principal282 on topic Dt3 VM26

Yippee we are much closer. But now as the song says, "now look at this." 

Smoke pouring out the exhaust area. 




Video 2
A bit of fine tuning and two trips through neighborhood. 



Pic of new plug gapped properly after a 5 min ride. Hesitates mid throttle and not real responsive but so much better

  
29 Aug 2021 16:01 #16

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Replied by principal282 on topic Dt3 VM26

Gap on factory br8es-- .030
spec--.020

Who knew a hundredth of an inch made such a difference??
29 Aug 2021 16:03 #17

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Replied by principal282 on topic Dt3 VM26

A thought. 
I wonder if my battery is bad. It holds almost no charge. when fully charged it ran decent.  

Would a bad battery or bad charging circuit lead to sputtering and poor running?
29 Aug 2021 18:27 #18

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Replied by RT325 on topic Dt3 VM26

Bowl gasket isn't critical for running, only for making a mess. Sorry i'm a day behind. Start again go back & read.
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Last edit: 29 Aug 2021 18:30 by RT325.
29 Aug 2021 18:29 #19

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Replied by MarkT on topic Dt3 VM26

Bad battery can lead to expensive failure of lights if you don't have a regulator installed.  (Regulator didn't come standard until 75-76 models...  76 in US.)  Worth changing it just for that reason.

More charging load because the battery is weak does take away from available ignition power. 

Again, if you're using a resistor plug, get rid of the stock resistor cap if you haven't already.  or find the correct non-resistor plug which is not easy these days and you might end up with counterfeits. 
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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29 Aug 2021 18:37 #20

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