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Thread: ATC 250r New pipe!

  1. #31
    Join Date
    Oct 2003
    Location
    Las Vegas, NV.
    --
    2,469
    Nice! LED makes a good looking pipe.
    Red Rider's Sand Machine Updated 07/23/14

  2. #32
    Join Date
    Jun 2004
    Location
    Oregon
    --
    1,771
    So I took it to the dunes and it ran pretty good for about 30minutes then it started sputtering on the top end. Checked the main jet it was a 185 pilot was 58 plug was black and wet.. So I dropped to a 175 52 and a new plug. Took it back out did the same thing ran much better for about 20 minutes then the top end started crapping out again, plug dark but dry.Dropped the needle from a dgh to a cej 3rd clip. Same thing but it’s improving a little. Not sure if I should drop another size in the main or what. Carlos says it might be something else going on.
    This trike is something else! Let me tell ya
    1986 ATC 250R
    Ported w/ Cool head
    LED pipe and silencer.
    Boyesen Rad Valve
    Keihin PWK 38mm
    Works Ultra Cross Shock
    LSR +2 Axle
    American Star Racing +4 Swinger
    LED Intake
    Hi-Flite desert seat
    OEM clutch 89 upgrade
    2021 YFZ450Rse Rossier R5 Titanium Header AIS Delete FCI Vortex ECU


  3. #33
    Join Date
    Jun 2004
    Location
    Oregon
    --
    1,771



    Sent from my iPhone using Tapatalk
    1986 ATC 250R
    Ported w/ Cool head
    LED pipe and silencer.
    Boyesen Rad Valve
    Keihin PWK 38mm
    Works Ultra Cross Shock
    LSR +2 Axle
    American Star Racing +4 Swinger
    LED Intake
    Hi-Flite desert seat
    OEM clutch 89 upgrade
    2021 YFZ450Rse Rossier R5 Titanium Header AIS Delete FCI Vortex ECU


  4. #34
    Join Date
    Oct 2011
    Location
    SLC, UT
    --
    93
    I've had similar symptoms with seemingly rich jetting, but no amount of jetting fixes it. I know that my Kawasaki ignitions aren't known for reliability, but 40 years old is a long time to live even for a Honda! Do you have a spare CDI or stator you could swap and try?

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