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#540028 - 07/30/12 11:31 AM
Re: Jetting help... HELP!
[Re: Kenzo]
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Hall of Fame
Registered: 11/17/03
Posts: 1181
Loc: Katy Texas
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kennys got a good point. when i buy a used bike and tear into the carb for a cleaning, i dont even worry about the pilot, it just automatically gets replaced. everthing else gets scrubbed.
fouled spark screen, bummer!! i have heard of another 2 stroke story (locally) where the plug looked wet and everything thought it was too rich and wouldnt idle right. turns out it wasnt the jetting, it was a bad head gasket leaking fluid into the cylinder and fouling the plugs.
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Nacho Nate Kronreif Trunkenpolz Mattighofen 450xcw (plated)
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#540037 - 07/30/12 03:01 PM
Re: Jetting help... HELP!
[Re: CaD11]
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Hall of Fame
Registered: 11/17/03
Posts: 1181
Loc: Katy Texas
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i have run them since 2006, and even with over 100hrs on sets, havent seen them flap. i wouldnt hesitate to run them on any new machine i got.. i tried the v4 on a 250 ktm and had jetting issues. i started swapping back and forth between the v3 and v4 and convinced myself i just didnt like the new v4 design. big fan of the v3 though.
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Nacho Nate Kronreif Trunkenpolz Mattighofen 450xcw (plated)
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#540038 - 07/30/12 03:31 PM
Re: Jetting help... HELP!
[Re: Nacho Nate]
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Gang Daddy
Registered: 04/11/09
Posts: 598
Loc: Katy, TX
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Connor,
it looks like you have your answer. clean and adjust the PV and the carb, replace the pilot, check for leaks down the line from air filter to jug to spark arrestor.
If you have a manual, you can also check the jets according to factory. just sayin, you never know what the person before you did. They may have left out the moon phase factor!
welcome to the world of 2T's.
+1 on the V3
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Toby TRH_Events@hotmail.com __________________ Kyle '14 KTM 250xc '08 CRF 450R #215 Terri '07 CRF230F Toby - '04 YZ250 , '10 KTM 300 XC-W #394 _______________________________________
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#540042 - 07/30/12 06:01 PM
Re: Jetting help... HELP!
[Re: CaD11]
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Hall of Fame
Registered: 11/17/03
Posts: 1181
Loc: Katy Texas
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dont believe everything you read on the internet!! lol
after studying moon phase, also look up density altitude. even though we are near sea level, the motor thinks we are really at about 2300 feet due to pressure and humidity etc. you might run slightly leaner jets due to this, in summer time.
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Nacho Nate Kronreif Trunkenpolz Mattighofen 450xcw (plated)
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#540043 - 07/30/12 06:03 PM
Re: Jetting help... HELP!
[Re: Nacho Nate]
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Hall of Fame
Registered: 11/17/03
Posts: 1181
Loc: Katy Texas
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oh something to consider too, the powerband and that 2 stroke hit. running a little rich makes it less explosive and for technical trails, sometimes a little less hit is a good thing. and repack that silencer often.
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Nacho Nate Kronreif Trunkenpolz Mattighofen 450xcw (plated)
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#540044 - 07/30/12 06:24 PM
Re: Jetting help... HELP!
[Re: Nacho Nate]
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Veteran Lunatic
Registered: 08/17/02
Posts: 2944
Loc: TEXAS
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Your entire problem is your hair, should be green.
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#540049 - 07/30/12 07:31 PM
Re: Jetting help... HELP!
[Re: CaD11]
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Gang Member
Registered: 09/12/11
Posts: 175
Loc: East Texas
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Connor----if it were me-I would start with the power valve first (remember it is a power valve) when I had it good and clean and working right if the bike still does not feel right-then I would be looking at the carb. I would stay on the fat side of jetting (may not make peak hp). I dont know what oil you use for pre-mix or how you mix it, or how you keep it or how old it is. Also what fuel you use.
For me in the old days I used the same jetting on my 250 with pump fuel or race gas (vp 104) my bike ran better on rave gas but money was real tight so alot of times I had to run pump fuel.
Just keep it simple--------also do you put the oil in the gas can first or the gas in the gas can first???? That can make a real big differance. One more thing the power valve is gummed up-how about your air filter-how offen do you clean it??
TxTom
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Rolling Thunder Racing. The Pony Express. Home to the Little Red Ponies.
Tom #04v Honda XR200
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