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Thread: 1993 K75S White Smoke

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  1. #1
    Registered User
    Join Date
    Dec 2008
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    1993 K75S White Smoke

    First time posting as I have had a good run up to this point with the bike. Now, unfortunately, I am at a loss as to what to do...

    1993 K75S with about 2k miles on it. Original owner. Was running fine, as I use it twice a week to commute a few miles to work, until it tipped over to the right side in the garage. Cracked the upper fairing and saddle bag. Got the replacement parts and it is all back to 100% cosmetically.

    When the bike fell over though, it leaked out oil from the filler cap. Not a lot, maybe 1/2 to 3/4 of a cup. Well, in the haze of being pissed off and upset, I got the bike back up and started it up right away. Started fine and ran with no issues for a couple of minutes. In the meantime, I had the bike towed up to the local dealer to have an ABS problem fixed. They checked over the bike and said all looked okay. Fixed the ABS issue, test rode it and gave me the bike back.

    Trailered the bike back yesterday. When I got home, I started the bike and it billowed white smoke out of the tail pipe. Figured it could be that they had it on then side-stand for awhile. Idling fine, no warning lights, no roughness. Smoke dissipated then started right back up. Turned it off. Checked the oil glass and it looked low. Opened up the oil cap and you could smell smoke and a burning smell from inside the engine, oil was present though low. Added oil. Restarted. No smoke for a minute or two then white smoke again. Can detect no smell of coolant and reservoir level the same, half way in between min/max.

    At a loss as to what this could be.... Head gasket, oil/water pump gasket, oil leak, did I possibly cook the valves etc.?

    Any help or advice would be GREATLY appreciated before I take another trip to the dealer.

    Thanks to everyone who might respond!

  2. #2
    3 Red Bricks
    Join Date
    Jan 2007
    Location
    Pleasanton, Ca.
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    3,486
    How far have you RIDEN it since you got it back from the dealer?

    It sounds like not at all. In fact, 2000 miles since 1993? You've NEVER really riden it.

    The rings probably aren't even broken in (actually they're probably glazed). So you have less oil control than a normal bike.

    If I leave one of my bikes on the side stand after a ride, sometimes it will take a quarter mile or more to burn off the oil that got into the combustion chamber. Yours would probably take more.

    Do you know how to check the coolant level AT THE RADIATOR CAP (under the front of the tank) not at the overflow bottle? If the coolant level is up to the bottom of the RADIATOR CAP and the oil level is good, go for a ride. Watch your odometer. If the smoke is still there after 3 MILES, then you might have a problem. But if it's oil smoke, it's not hurting anything while you're testing it.

    I really think you'll be fine. You've probably just got a lot of oil in the chambers. It should burn off, IF YOU RIDE IT.

    Put some miles and smiles on that bike!!!!



    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  3. #3
    Registered User
    Join Date
    Oct 2007
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    383
    Does it really only have only 2000 total engine/frame time?

    If it does, then it is no wonder that the engine still stinks of "something heated" or "cooking".
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  4. #4
    Rally Rat
    Join Date
    Jun 2012
    Location
    Olympia, WA
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    170
    Why are you trailering / towing the bike back and forth? Why not ride it?

  5. #5
    Dum vivimus vivamus ted's Avatar
    Join Date
    Mar 2003
    Posts
    2,594
    First - welcome to the site. As Lee said, at 2K that bike is barely even beginning to be broken in, wish I could say the same about mine!

    When I got home, I started the bike and it billowed white smoke out of the tail pipe. Figured it could be that they had it on then side-stand for awhile. Idling fine, no warning lights, no roughness. Smoke dissipated then started right back up. Turned it off. Checked the oil glass and it looked low. Opened up the oil cap and you could smell smoke and a burning smell from inside the engine, oil was present though low. Added oil. Restarted. No smoke for a minute or two then white smoke again. Can detect no smell of coolant and reservoir level the same, half way in between min/max.
    This all sounds pretty normal My old K75S was parked in downtown DC for much of its life and unfortunately it was knocked over several times. Twice I came out in the morning to find it on its side, and it would do the same as yours - furiously smoke on and off for some time, to the point I thought I would foul the plugs, but over the course of a few miles spirited riding it would burn it off. I always thought it was from oil going backwards through the crankcase breather hose but who knows.

    Going forward make sure the oil level, while the bike has been resting on the centerstand on level pavement for 10 minutes or so, is right at or juuuust above the red dot in the middle of the sightglass. A little oil goes a long way bringing it from the bottom to the middle, be careful not to add too much.

    As for how you like to ride (or not ride) your bike ... well, it is your bike - ride your own ride, enjoy it your way, and ignore the rest.
    Ted
    "A good stick is a good reason"
    1994 K75RT
    Moto Pages

  6. #6
    Unfunded content provider tommcgee's Avatar
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    Dec 2006
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    Braintree, MA
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    3,117
    White smoke is usually a water leak, like a blown gasket. I'd look there first.
    Salty Fog Rally 2007, 2009, 2011, 2012, AND LOOKING FORWARD TO 2014!

    -Tom (KA1TOX)

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