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Thread: 1977 atc90 help!!!

  1. #16
    Join Date
    Nov 2010
    --
    30
    ok so go bought new fuel lines, fuel filters, steering stem bearings and a num65 main jet. still no luck i readjusted the needle and nothing, also does it matter the pipe is off and there is not air filter yet. i tried to advance and retard the ignition and still no luck u am so lost. what should i check out? i just got feeler gauges and have to check the point gap. but i need ideas

  2. #17
    swifty's Avatar
    swifty is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    May 2010
    Location
    sabula iowa
    --
    381
    buy a new set of points and gap them correctly ive had so many atc 90's act stupid and bog like that and i rebuilt carbs switched carbs so many times to get no where come to find out it was the points ive had little luck with just cleaning them just buy a new set for $9 bucks, i think the spark just craps out or is weak and dosent burn the fuel and gives the you the bog, acts just like a carb problem ive even had it get better or worse with using the choke to trick me even more into thinking it was the carb,,,,,,, thats been my expericence hope it helps
    ACT NOW THINK LATER!
    current trikes owned
    minty 86 250sx my rider
    pauter flat track framed 110-123cc with custom goodies
    pauter mx framed 110-123cc with aftermarket goodies
    joker framed 90-108cc with front suspension
    2007 artic cat DVX 400
    dickson sprint framed 73 green us90 with 110 engine

  3. #18
    Join Date
    Nov 2010
    --
    30
    ok ill try that, and swifty your bike is sweet as hell love the drag tires and suicide shift

  4. #19
    swifty's Avatar
    swifty is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    May 2010
    Location
    sabula iowa
    --
    381
    thanks man its something diffrent, its a old flatrack frame looks stupid ass hell with rear fenders so i had them off and was like this thing looks fast!! added the solo seat and hoosier rear tires and instant custom atc 90! i ride it on the street only and the shifter is so top heavy it swithch gears on its own when u shift from rocking back and forth! lol
    ACT NOW THINK LATER!
    current trikes owned
    minty 86 250sx my rider
    pauter flat track framed 110-123cc with custom goodies
    pauter mx framed 110-123cc with aftermarket goodies
    joker framed 90-108cc with front suspension
    2007 artic cat DVX 400
    dickson sprint framed 73 green us90 with 110 engine

  5. #20
    Join Date
    Sep 2009
    Location
    Washington
    --
    553
    I had bent forks too....Not that bad but still to the point where the fender rubbed the head. I chained the back to my truck (as close to the inside of the axle as I could get on both sides) and then used two come-alongs(one to each side of the front axle) to the back of my sisters car and started cranking each one evenly till the forks were straight. All you need is two stationary objects and something to pull the forks evenly. Make sure all your hook points and equipment are in good shape.

    If it doesn't work you aren't out anything and still have to pick up some new ones.
    2) 1977 Honda ATC90
    2)1985 Tecate
    2005 Banshee LE
    01 Honda 300EX
    74 Suzuki TC100
    66 Honda 305 Scrambler

  6. #21
    Join Date
    Nov 2010
    --
    30
    i am getting so sick of this p.o.s. atc, i got new points and condenser went threw all the wiring and a lot was chewed up so i fixed everything taped it all up nice. and now i have no spark. i am so fed up with this thing o and then the throttle cable snapped so i have to order another 1

  7. #22
    Join Date
    Nov 2010
    --
    30
    if anyone is still following this i just got it running good i think.(DUE TO SWIFTYS ADVICE) ill know for sure once i get my chain,throttle cable, and new rim orings in the mail.but from what i can tell its good, now excited to ride

  8. #23
    Join Date
    Sep 2009
    Location
    Washington
    --
    553
    Good deal! Congrats Man!
    2) 1977 Honda ATC90
    2)1985 Tecate
    2005 Banshee LE
    01 Honda 300EX
    74 Suzuki TC100
    66 Honda 305 Scrambler

  9. #24
    swifty's Avatar
    swifty is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    May 2010
    Location
    sabula iowa
    --
    381
    glad my advice worked it only took me about 10 yrs of tinkering to figure out this trick, wish someone had told me it when i first started wrenching on 90's
    ACT NOW THINK LATER!
    current trikes owned
    minty 86 250sx my rider
    pauter flat track framed 110-123cc with custom goodies
    pauter mx framed 110-123cc with aftermarket goodies
    joker framed 90-108cc with front suspension
    2007 artic cat DVX 400
    dickson sprint framed 73 green us90 with 110 engine

  10. #25
    Join Date
    Dec 2010
    Location
    Rockford, Il
    --
    38
    nice trike i have a 78 Atc 90 i would get smaller tires in the back mine doesnt like to go in high with the big ones but nice trike good luck to u!
    84' Yamaha ytm 200 trooper
    84' Honda atc 200s parts
    82' Honda atc 110 parts
    78' Honda atc 90 runs

    buddy
    86 Honda atc 250r BADD

    uncle
    02 Kawasaki Praire 4x4

  11. #26
    Join Date
    Nov 2010
    --
    30
    Quote Originally Posted by Brian Lilb Keen View Post
    nice trike i have a 78 Atc 90 i would get smaller tires in the back mine doesnt like to go in high with the big ones but nice trike good luck to u!
    lol, just picked up 2 maxxis razors on beatrice.com for 100 they r 22/11/8

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