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Jamie
Moderator
Joined: 27 Aug 2006
Posts: 749
Location: somewhere
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 Posted: Sat Dec 01, 2007 7:32 pm Post subject: kfx400 problem |
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hey there,
my dad just got a 03 kfx400 the other day and finally got to ride today and there seems to be a problem with it,the problem is when your going along and go give it a bit from mid to top end power it dyes down in acceleration like its hitting the rev limiter and got no fuel up top,its running a 146main on 3rd clip with a dmc pipe and a filter.
would anyone know what could be causing this problem??
thanks |
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Sponsor
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250Rtony
4fiddy Racer
Joined: 25 Apr 2007
Posts: 200
Location: wherever there is a 250r
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| Posted: Sat Dec 01, 2007 7:49 pm Post subject: |
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you need to fit a atc250r motor in it jamie.That will do the job.lol
If your problem is mid to topend its probably a main jet problem or some rubbish in the carb.Find out what size the standard main should be and start jetting from there.Clean the carb and put a fuel filter on the bike.
tony
_________________
'86 250R ATC
'07 Pro Shark 90cc RED
'07 Pro shark 90cc BLUE
74 atc 70
84 ytm 200 |
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Todd 127
The Day Starts With OZATV !
Joined: 12 Feb 2006
Posts: 1267
Location: Hawkesbury
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| Posted: Sat Dec 01, 2007 8:30 pm Post subject: Re: kfx400 problem |
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| Jamie wrote: | hey there,
my dad just got a 03 kfx400 the other day and finally got to ride today and there seems to be a problem with it,the problem is when your going along and go give it a bit from mid to top end power it dyes down in acceleration like its hitting the rev limiter and got no fuel up top,its running a 146main on 3rd clip with a dmc pipe and a filter.
would anyone know what could be causing this problem??
thanks |
Our mate was chasing a similar problem for about a year, changing every electrical part over time and found out it was the reverse sensor/switch playing up and not letting it rev out  , giving it the feeling it had a misfire. this was on a ltz400 but same quad.
Might not be the problem, but check all these things, including jetting before you go spending bucks on cdis and other big dollar items.
Then if that doesnt work the atc250r motor will go pretty hard  |
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Jamie
Moderator
Joined: 27 Aug 2006
Posts: 749
Location: somewhere
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| Posted: Sat Dec 01, 2007 9:12 pm Post subject: |
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| thanks tod i will play around with that tomorrow when i go riding,does anyone know where abouts the reverse sensor is and how do i check it?? |
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Quad
The Day Starts With OZATV !
Joined: 22 Oct 2006
Posts: 2773
Location: UP FRONT
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| Posted: Sat Dec 01, 2007 10:00 pm Post subject: ok |
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| ill check it out sunday for you |
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Jamie
Moderator
Joined: 27 Aug 2006
Posts: 749
Location: somewhere
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| Posted: Sun Dec 02, 2007 4:02 pm Post subject: |
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problem fixed it was the reverse switch playing up,bike goes excellent now  |
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