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Thread: 1980 185 Carb Question - Need Some Help!

  1. #1
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
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    1980 185 Carb Question - Need Some Help!

    Before I get to the carb issue, here's the history. Took on a 1980 185 project for a co-worker who's son inherited this machine from his grandfather. It had a supposedly "no-spark" issue with potential carb cleaning needed. You've all seen this scenario before!

    I got spark just replacing the boot so check that off.

    It made some noise after spraying some fuel in the cylinder so now for the carb.

    The carb:
    1. It was missing the second small gasket under the spring and washer on the air/idle screw so I put one in and turned out the air/idle screw 2 turns.
    2. Thoroughly cleaned the carb body, needle/seat and main jet.
    3. Set the float at 12.5 mm
    4. Made sure the needle is set to the second notch on the throttle. It has a new throttle cable on it which seems correct.
    Note: If you notice in the picture the pilot jet is pressed in so I didn't remove it to clean. Is this normal, can I just pull it out? Any other ones I've seen screw out so this is baffling me?

    It runs incredibly rich at idle even after repeated cleanings and see carb cleaner/compressed air come from every orifice. It has great throttle response at mid and high revs and doesn't smoke at all.

    Next Steps:
    1. I'm getting the carb ultrasonically cleaned this week and will reset everything to factory settings.
    2. If that doesn't solve the problem, I'm leaning toward a Shindy carb kit from eBay.

    Any other suggestions for the carb issue?

    It's in really nice shape with decent plastics, seat and mechanically sound for brakes, bearings etc. They want to tow a wagon around their acreage so I donated and installed a trailer hitch.

    It has a bubba fit 110 tank on it which someone taped up one of the fuel delivery pipes to the carb. Must have leaked like a sieve! I installed a 'Y' fitting and replaced all the lines to at least make it safe.
    They had a completely wrong front brake handle on it and the cable was seized. I donated a handle and ordered a Motion Pro cable from eBay.
    The hand grips were wrecked so I replaced those with cheaper "Moose" ones and made replacement handle bar end protectors from plastic ones I had.
    The foot peg rubbers were falling apart so I located a decent used set near me for $20.00.
    Attached Thumbnails Attached Thumbnails 185 1r.jpg   185 2r.jpg   185 3r.jpg   185 4r.jpg   185 6r.jpg  
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  2. #2
    Join Date
    Jul 2009
    Location
    South Florida
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    6,722
    The press in pilot jet will pull out , just grab it with a decent set of pliers and twist - twist pull .
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  3. #3
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
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    3,001
    ^Thanks Shortline! FYI, I can see light in the passageway when I shine a flashlight up the jet and look down the small hole from the carb throat. That tells me it's clean I'm thinking. I'm getting the carb ultrasonic cleaned tomorrow and will start again. Rebuild kit is next in line.
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  4. #4
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
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    10,515
    Quote Originally Posted by coolpool View Post
    ^Thanks Shortline! FYI, I can see light in the passageway when I shine a flashlight up the jet and look down the small hole from the carb throat. That tells me it's clean I'm thinking. I'm getting the carb ultrasonic cleaned tomorrow and will start again. Rebuild kit is next in line.
    If it turns out that pilot is clear focus on that air passage like I was saying.
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  5. #5
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,722
    Just make sure that pilot jet hasn’t been drilled out oversized . Should be a # 38 jet .
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  6. #6
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
    --
    3,001
    ^ Is that number stamped on the pressed in pilot somewhere?
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  7. #7
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
    --
    3,001
    Quote Originally Posted by fabiodriven View Post
    If it turns out that pilot is clear focus on that air passage like I was saying.
    Roger that Fabio! As soon as it's back from cleaning I'll be going through it with a fine tooth comb.
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  8. #8
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,722
    Probably not since it’s not supposed to be a serviceable part . The # 38 is the correct size hole though .

    Quote Originally Posted by coolpool View Post
    ^ Is that number stamped on the pressed in pilot somewhere?
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  9. #9
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
    --
    3,001
    ^ Forgive my lack of knowledge here Shortline, when you say #38 pilot hole, is that the same as a #38 drill bit? I was thinking of measuring the existing hole with the nice end of a drill bit to see if someone has mucked with the hole size. The carb will be back from ultrasonic cleaning tonight....I'm told the solution was pretty dirty when it came out.
    Attached Thumbnails Attached Thumbnails Drill Bitsr.jpg  
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  10. #10
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,722
    Drill bit jet sizing is different . A # 38 drill bit is tiny compared to that one and I’m pretty sure their different between keihin and mikuni .
    I have the keihin kit .
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  11. #11
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
    --
    3,001
    Oh I see, thanks for the schooling. Never had to deal with this situation before on any machine I've tinkered with...lucky I guess. So i better find a Mikuni pilot measuring kit:-(
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  12. #12
    Join Date
    Jul 2009
    Location
    South Florida
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    Your carburetor should be a Keihin .


    Quote Originally Posted by coolpool View Post
    Oh I see, thanks for the schooling. Never had to deal with this situation before on any machine I've tinkered with...lucky I guess. So i better find a Mikuni pilot measuring kit:-(
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  13. #13
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
    --
    3,001
    ^Ah yes, correct Shortline...my bad. I got the carb back from cleaning and it's actually worse in the fact that I'm having a hard time starting it now and it still runs way too rich at idle. Is it possible the black composite float is saturated and sitting too low in the bowl?
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

    Other
    1983 Honda Z50
    1978 Honda XL75

    Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
    http://www.3wheelerworld.com/showthr...k-for-coolpool

  14. #14
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
    --
    10,515

    1980 185 Carb Question - Need Some Help!

    Quote Originally Posted by coolpool View Post
    ^Ah yes, correct Shortline...my bad. I got the carb back from cleaning and it's actually worse in the fact that I'm having a hard time starting it now and it still runs way too rich at idle. Is it possible the black composite float is saturated and sitting too low in the bowl?
    Put it in some gas and see if it floats. If the fuel were high in the bowl it would flow out the overflow though.

    I'm still thinking air circuit. You really have to work to clear them.
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  15. #15
    Join Date
    Jul 2009
    Location
    South Florida
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    6,722
    Doubtful on the float , it should be set parallel with the bowl just as the float valve seats , that’s basically a one year carburetor , did you use a shindy carburetor kit and use every piece in the kit ? Needle / seat all need to match .

    Quote Originally Posted by coolpool View Post
    ^Ah yes, correct Shortline...my bad. I got the carb back from cleaning and it's actually worse in the fact that I'm having a hard time starting it now and it still runs way too rich at idle. Is it possible the black composite float is saturated and sitting too low in the bowl?
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

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