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400ex, cutting out problem

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TRX FoFiddy
4fiddy Racer


Joined: 30 Jun 2006
Posts: 231
Location: Mount Isa, North Queensland

PostPosted: Sun Oct 07, 2007 7:42 pm Post subject: 400ex, cutting out problem Reply with quote Back to top

today was the 1st time i took my bike 4 a proper ride sicne its new rings and it was going good 4 aobut 1 hour, the all of a sudden when i hold it flat from gears 3rd-5th it seems almost like its runnig out of fuel coz it hamers in the bottm to mid but when its up top screaming it just farts ans crap like that, i check the jets and there all clean so i dont no what else to check.
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Trx450er 2008 Stock For Now Smile

2000 HONDA 440ex
(Blown Up)

MSN: grant_31291@hotmail.com
 
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PeteW
Moderator


Joined: 09 Feb 2006
Posts: 1877
Location: Doreen, Vic

PostPosted: Tue Oct 09, 2007 12:10 am Post subject: Reply with quote Back to top

what size main jet have you got in Grant?
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TRX FoFiddy
4fiddy Racer


Joined: 30 Jun 2006
Posts: 231
Location: Mount Isa, North Queensland

PostPosted: Tue Oct 09, 2007 7:35 am Post subject: Reply with quote Back to top

it has a 450r carb on it and it has a 180main, its just real wierd it was going so good 4 aobut 30min then it just started palying up.
_________________
Trx450er 2008 Stock For Now Smile

2000 HONDA 440ex
(Blown Up)

MSN: grant_31291@hotmail.com


Last edited by TRX FoFiddy on Tue Oct 09, 2007 7:40 am; edited 1 time in total
 
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TRX FoFiddy
4fiddy Racer


Joined: 30 Jun 2006
Posts: 231
Location: Mount Isa, North Queensland

PostPosted: Tue Oct 09, 2007 7:36 am Post subject: Reply with quote Back to top

do u think it could b the cdi
_________________
Trx450er 2008 Stock For Now Smile

2000 HONDA 440ex
(Blown Up)

MSN: grant_31291@hotmail.com
 
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altech1
50cc nipper


Joined: 09 Nov 2007
Posts: 11

PostPosted: Sat Nov 17, 2007 9:23 pm Post subject: Reply with quote Back to top

hi there did you clean the carb after the rebuild . had a mate with that same mod (450 carb on the 400 ) after cleaning the carbe, we noticed that when he hit the throttel hard it splutted and bog down. after a close look we noticed that the power pump was squirting more fuel. when we cleaned it we pulled the power pump apart. there was dirt on top of the plunger not letting it return all the way back. (must have been tuned like this) now when you hit the throttel it squirted too much fuel it was just a matter of adjusting the squirt time about (1.5 sec - about wat ya wont)
 
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TRX FoFiddy
4fiddy Racer


Joined: 30 Jun 2006
Posts: 231
Location: Mount Isa, North Queensland

PostPosted: Sun Nov 18, 2007 10:59 am Post subject: Reply with quote Back to top

thanks ill try that when i can move my arm abit better.
_________________
Trx450er 2008 Stock For Now Smile

2000 HONDA 440ex
(Blown Up)

MSN: grant_31291@hotmail.com
 
View user's profile Send private message Send e-mail MSN Messenger
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