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Old 02-01-2010, 11:32 PM   #1
Just Dan OP
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What happens when you tip your airhead on its side?

My gear lever seal was leaking and I lowered the R100 softly on its right hand crash bar and replaced the oil seal. Now when I start it up for 5 secs or so it blows a lot of blue smoke. It seems engine oil has made its way up into the oil breather system and into the carbie. I can put my finger underneath the plastic inlet to the carbie and feel oil. Am I on the right track?

The bike only blows blue smoke on cold start up. Once going or starting when warm. The bike blows no smoke at all.

The engine oil level is just over 3/4 full. I have not over filled the engine, as that will force oil into the breather pipe.
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Old 02-02-2010, 01:05 AM   #2
opposedcyljunkie
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When parked and leaned to one side, it's normal for oil to creep into your intake and burn on combustion. Thus, the blue smoke. I rarely park using the sidestand to avoid this. The S/S for me is only for quick stops and to avoid the bike tipping over when dismounting.
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Old 02-02-2010, 07:17 AM   #3
jtwind
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That's how you usually replace that seal so that's ok. My guess is the issue will go away. It's my experience that any thing over the half way mark on the oil dipstick is over filled on an airhead. They almost all seem to just use oil until it gets down to half then it stops.
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Old 02-02-2010, 08:12 AM   #4
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Well, It sounds like you might give the airbox and related hoses a good cleaning out...If you got a bunch of oil in there it works it's way down into the carbs gradually.

I bet it clears up. But a little smoke on startup is in the range of normal for these engines. Hold it upright for 30 seconds after you shut it off. Then put it on the side stand, Get off, Then put it on the center stand.

I only use the side stand for quick offs and on's. Like beer stops.

John
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Old 02-02-2010, 12:09 PM   #5
lkchris
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We spent the night in an Alpine, AZ, motel, and I parked my G/S on its sidestand, as I do everywhere except my garage.

We arrived early, and soon thereafter the motel was filled with Harleys.

Next morning those guys were right there watching as we loaded up (what's that "tankbag" thing?) and they got a facefull of smoke when I started up. I liked it.
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Old 02-02-2010, 12:52 PM   #6
bigbottomedanarchist
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Good Morning Dan,

Have you had a look at the crankcase breather? It coupld be a problem with it. I had something similar happen on my cafe racer.

Im back home in Hobart today and will give you a call, Where's gadget when you need him?

Andrew
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Old 02-02-2010, 02:06 PM   #7
Just Dan OP
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Quote:
Originally Posted by bigbottomedanarchist
Good Morning Dan,

Have you had a look at the crankcase breather? It coupld be a problem with it. I had something similar happen on my cafe racer.

Im back home in Hobart today and will give you a call, Where's gadget when you need him?

Andrew
Floating around the South China Sea , I reckon. He will be back home some time around the end April I think.
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Old 02-02-2010, 04:27 PM   #8
rtw02
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Like this...

Nothing bad, just a bit of smoke...

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Old 02-02-2010, 05:07 PM   #9
Just Dan OP
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Yep , exactly like that. Even the same crouching position while replacing seal.. My thinking is - while on its side. The engine oil has seeped up into the oil breather. Started it again this morning from cold. No smoke at all. Phew...

For a brief moment. I was thinking valve guide replacement
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Old 02-02-2010, 05:46 PM   #10
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I fell over at next to zero speed on my R100 and broke my collarbone. It was on a lush, soft lawn. I didn't even get a grass stain on my jacket. The bike was on it's left side for several minutes. Of course when I started it to ride home it smoked heavily out of the LH pipe. That was no surprise to me. What surprised me is that it smoked for about 30 minutes and at least 15 miles. I was at Daytona during Bike Week and had to ride 90 miles home. All of those 30 minutes was in close proximity to hundreds of other riders, most on Harleys or metric cruisers. I felt like I was shaming the BMW marque by releasing huge clouds of blue smoke at every stop light but what the heck, the pain from the broken bone eclipsed the shame.
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