Author Topic: Slight blue haze on startup. No side stand use!  (Read 4423 times)

Offline shoebox1.1

  • Motobrick Curious
  • Posts: 28
Slight blue haze on startup. No side stand use!
« on: August 09, 2015, 08:47:57 PM »
I know If the brick is on its side stand oil can seep into the combustion chamber.   I do not use the side stand but only to get off the bike.  Then on the center it goes.  68000 miles.  Well kept.  Oil always changed
Since i have owned the bike I've never seen blue smoke.  I was sitting on the bike choke 1 and saw in mirror blue haze and smelled oil burning.  Can't explain.  Going to monitor.  Normal sometimes?
  • mckinney texas
  • 87 k75s

Offline Chaos

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Re: Slight blue haze on startup. No side stand use!
« Reply #1 on: August 09, 2015, 10:46:42 PM »
It can happen even on the centerstand. My theory is that if the engine stops with one piston's valve's closed on the compression stroke, as the charge cools it will create a vacuum that can draw oil past the rings.  I quit using the centerstand years ago, let the engine idle for a moment leaning to the right before I shut it off.  Smokes about 1 out of 10 times.  Nothing to worry about.
  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline shoebox1.1

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  • Posts: 28
Re: Slight blue haze on startup. No side stand use!
« Reply #2 on: August 09, 2015, 11:05:39 PM »
Very interesting.  I'm going to start an oil consumption test here soon when I change the oil.  Ill try the idle to the right. I like the idea
  • mckinney texas
  • 87 k75s

Offline johnny

  • TrailBrakingThrottleWhacker
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Re: Slight blue haze on startup. No side stand use!
« Reply #3 on: August 10, 2015, 07:17:51 AM »
if my garage fills with blue haze when i start my motobrick... i know my exhaust valves are adjusted properly...

j o
  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline shoebox1.1

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  • Posts: 28
Re: Slight blue haze on startup. No side stand use!
« Reply #4 on: August 10, 2015, 08:24:40 AM »
Are there no exhaust stem seals on these engines?
  • mckinney texas
  • 87 k75s

Offline K75RT Keith

  • ^ Proficient Motobricker
  • Posts: 447
Re: Slight blue haze on startup. No side stand use!
« Reply #5 on: August 10, 2015, 09:52:00 AM »
It's normal for your K-bike to blow a little blue smoke.  If it blows a lot of blue smoke, then there's a problem.
You can't help someone who doesn't want to hear the answer.

1990 K75RT

Offline Nantucket_Red

  • ^ Motobrick Curious
  • Posts: 62
Re: Slight blue haze on startup. No side stand use!
« Reply #6 on: August 10, 2015, 11:08:18 AM »
Mine does it once in awhile. No big deal.
  • Cape Cod,MA
  • 1987 BMW K100RT

Offline shoebox1.1

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Re: Slight blue haze on startup. No side stand use!
« Reply #7 on: August 10, 2015, 11:09:42 AM »
I'm liking these responses and some general internet searching shows the same -- normal
  • mckinney texas
  • 87 k75s

Offline shoebox1.1

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Re: Slight blue haze on startup. No side stand use!
« Reply #8 on: August 10, 2015, 08:54:23 PM »
No smoke tonite on my normal startup!!  Thanks so much
  • mckinney texas
  • 87 k75s

redtank

  • Guest
Re: Slight blue haze on startup. No side stand use!
« Reply #9 on: August 14, 2015, 07:08:45 PM »
Years ago my brick used to smoke after the side stand parking stunt. I just got the bike back and have been riding and parking on side stand. I try to remember to lean bike to right side for a bit before getting off, and have had no smoking issues. I'm beginning to think the brand/model of oil in engine plays a part in the smoke thing. I've heard that older Goldwings did the same thing....

Cris

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