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Seirra117th · July 12th, 2019, 09:47 PM

hope this post helps others understand how to tune fuel/air ratio

bikes....2008 green machine 250r ex250j 25000k's

have no history from PO

have fixed most problems and can idle nicely, ride only in 1st and 2nd atm due to no rego

so i needed a new air filter the form one is falling apart....i decided to get a k&n style panal hiflow filter from ebay

i installed it and straight away problem after blipping the throttle. it would drop below idle.......sit there.....then slowly come up if it didnt go to stall.......didnt attempt to ride it but normally pulls from a stop at 3000rpm with little drop in rpm

the bike has snorkle removed and yoshi slip on.....stock jets and pilots set at factory and idle set to around 1350......so far had run extremely well and starts up fine in da cold with short choke times......(in Australia and its winter here atm)

im keen on adding the new filter and was thinking its made more air flow so a LEANER mixture.......so i was thinking shimming stock needles with 2 washers.......aswell as increase pilots by 1/4 turn each.......making then L.2 3/4 R.2 total turns out.......if nit pilots out by 1/2 a turn

whats everyones thoughts?

July 12th, 2019, 09:47 PM	#1
Seirra117th ninjette.org member Name: Daniel Location: N.S.W. Australia Join Date: Apr 2019 Motorcycle(s): Ninja 250r 2008 Posts: 54	air filter made bike lean or rich? hope this post helps others understand how to tune fuel/air ratio bikes....2008 green machine 250r ex250j 25000k's have no history from PO have fixed most problems and can idle nicely, ride only in 1st and 2nd atm due to no rego so i needed a new air filter the form one is falling apart....i decided to get a k&n style panal hiflow filter from ebay i installed it and straight away problem after blipping the throttle. it would drop below idle.......sit there.....then slowly come up if it didnt go to stall.......didnt attempt to ride it but normally pulls from a stop at 3000rpm with little drop in rpm the bike has snorkle removed and yoshi slip on.....stock jets and pilots set at factory and idle set to around 1350......so far had run extremely well and starts up fine in da cold with short choke times......(in Australia and its winter here atm) im keen on adding the new filter and was thinking its made more air flow so a LEANER mixture.......so i was thinking shimming stock needles with 2 washers.......aswell as increase pilots by 1/4 turn each.......making then L.2 3/4 R.2 total turns out.......if nit pilots out by 1/2 a turn whats everyones thoughts?