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Thread: running weird.

  1. #1
    Join Date
    Jul 2005
    Location
    az
    --
    1,949

    running weird.

    this is driving me nuts. my beater 185s drips oil out tje pipe, runs great, smokes like a freight train, but runs great! now my other 185s checked valve adjustment, checked timing, new plug, rebuilt carb, new filter in the stock air box idles good, but has a flat spot right off idle, full throttle it runs okay, has a occasional pop out tje exhaust. I tried the oil burner carb, same thing.
    the weird runner has stock cdi, new spring in the pulse generator, stock coil.
    Old smoky has a 13 dollar china harness with cdi, coil plug wire. I haven't swapped the harness yet (don't want to cut the factory harness) but could it be the stock 40 year old ignition parts? jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

  2. #2
    Join Date
    Nov 2019
    Location
    Florida
    --
    1,044
    A flat spot and a pop, make me think jetting or running rich, lean it out a bit, clean and recheck the plug.
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  3. #3
    Join Date
    Jul 2005
    Location
    az
    --
    1,949
    strange thing is both carbs run like this on bike #1 and the pop happens at idle. Jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

  4. #4
    patriot1 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Mar 2020
    Location
    Palestine, AR
    --
    356
    Coil or CDI would be my guess

  5. #5
    Join Date
    Jul 2005
    Location
    az
    --
    1,949
    I'm going to swap the Chinese coil, wire and cdi and see what happens. jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

  6. #6
    Join Date
    Jul 2005
    Location
    az
    --
    1,949
    swapped coil, wire and cdi, starts easier, popping went away. installed the old parts onto old smokey and itsbhard to start. I noticed the actual plug wire is a old car plug wire . going to order another China harness to keep old smokey running. jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

  7. #7
    Join Date
    Jul 2005
    Location
    az
    --
    1,949
    another thing that got me thinking. last weekend messing with old smokey, I checked the oil and it was low, grabbed the first bottle on the shelf 0-20 synthetic that goes into my wifes 2017 tacoma. and added over 1/2 a qt that's when the oil started dripping out the exhaust. I'm sure the motor is tired, but maybe pouring basically water in the crankcase didn't help it any. went and changed the oil, found the drain cap loose and wet, had some old Rotella 15w40 Dino oil so that's what in there now. new ignition parts are on its way. we'll see. jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

  8. #8
    Join Date
    Jul 2005
    Location
    az
    --
    1,949
    went and messed with the trike again, starts up and idles fine. the rotor( spark advance),has both springs but really no tension. I had some distributor springs so I changed 1 out. still has a flat spot off idle but not popping.
    the carb is part oem, not even sure about the needle. going to order a ebay carb and give it another shot. Once pass the flat spot it has get up and go. I tried the washer on the needle top middle and bottom and really no difference. jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

  9. #9
    Join Date
    Jul 2005
    Location
    az
    --
    1,949
    ordered another ebay carb. 1st thing I notice is the slide and slide cap is bigger than the carb slide and cap that was on the trike. Installed the new carb and it seems to Rev better while parked. going to pull it out this weekend. If it runs good, going to order a new hi flite seat kit and be done with them.
    Still haven't decided weather to keep 1 or 2. I'm still stuck with all the extra parts too! Going to drag the 200s frame out and start bolting parts on it and make another trike. jim
    81 185s
    82 185s with 85 200s motor
    suspended 185s
    85 atc70
    1984 200s
    85 350x 3rd owner
    and a 72 ct70

    projects coming along

    85 200s
    81 suspended 185s (can't believe I came across 2)
    1982? 185s

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