Author Topic: Help... Connie blowing smoke  (Read 1022 times)

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Offline Panda

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Help... Connie blowing smoke
« on: June 22, 2018, 03:39:06 pm »
 So i get on the freeway to go to work this morning, look in my mirror and see that i am blowing enough smoke out my left muffler to make the freeway disappear. No issues when i rode her home last night, nothing on initial start up this morning. It's an 86 with low miles. Vould i be looking at a rebuild.... Or possibly something simple?

Offline works4me

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Re: Help... Connie blowing smoke
« Reply #1 on: June 22, 2018, 04:05:54 pm »
Depends on what you consider “simple”.

Was the smoke white, blue or black?

Offline Boomer

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Re: Help... Connie blowing smoke
« Reply #2 on: June 22, 2018, 04:20:26 pm »
Hopefully not, but 86s have a tendancy to tulip their intake valves on the left 2 cylinders.
However if its just lots of white smoke and no loss of power then its probably a valve stem seal thats give up.
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Offline Brooke_Benfield_OR

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Re: Help... Connie blowing smoke
« Reply #3 on: June 22, 2018, 04:39:30 pm »
The inquiry about the color of the smoke spot on for diagnosing the problem.

I'll add that you may of had a partially flooded cylinder - either coolant or gasoline. Since you describe no problems after the smoke quit you may have narrowly missed hydro-locking your engine.

Read up here about hydro-locking and implement the advice on preventing it.
Brooke Benfield  2013 FJR1300  COG #2185

Offline Daytona_Mike

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Re: Help... Connie blowing smoke
« Reply #4 on: June 22, 2018, 04:40:10 pm »
mine did that once and i thought i had blown a hole in a piston because it looked blue.
Turned out to be a stuck float valve and I was dumping raw fuel in the cylinder.

Question: Do you have oveflow tubes?  If NO then be very care starting that bike back up. You may hydrolock it.
Normally aspirated engines have perpetual turbo lag
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Offline Panda

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Re: Help... Connie blowing smoke
« Reply #5 on: June 23, 2018, 02:03:31 am »
Thanks for the responses. Smoke is white. I do have overflow tubes installed. No loss of power. Saw the smoke and went back home and got the cage.Will check it out after it cools off outside a bit... 8pm and 109°.

Offline Bob_C_CT

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Re: Help... Connie blowing smoke
« Reply #6 on: June 23, 2018, 10:25:42 am »
Check condition of oil by making a dipstick out of dowel of wood or something similar to put in oil filler. May show a condition to give you more info on cause and makes sure your oil is in good condition, easy peasy.
I see you don't have many posts and maybe a new owner.
Are you filling your oil by using the sight glass to see oil level?, which is not very reliable. Overfilled?
« Last Edit: June 23, 2018, 10:30:14 am by Bob_C_CT »
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Offline Mettler1

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Re: Help... Connie blowing smoke
« Reply #7 on: June 23, 2018, 12:37:55 pm »
Check condition of oil by making a dipstick out of dowel of wood or something similar to put in oil filler. May show a condition to give you more info on cause and makes sure your oil is in good condition, easy peasy.
I see you don't have many posts and maybe a new owner.
Are you filling your oil by using the sight glass to see oil level?, which is not very reliable. Overfilled?


    good point!! :great:
'94 Concours 115,000 miles-- 7th gear,2MM,KB fork brace,Over flowtubes,Stick coils,Tcro shifter,GPS,SiSF'sTorque cams,SPOOKFAK,block off plates, SS brake & clutch lines,KB risers, FENDA EXTENDA, emulators, SiSF carb Spa, Delkevic exhaust, Murphs' knee savers +grips, etc

Offline Nosmo

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Re: Help... Connie blowing smoke
« Reply #8 on: June 23, 2018, 01:49:57 pm »
White smoke is usually coolant.
2003 Connie    2007 Wee-Strom   

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Offline Panda

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Re: Help... Connie blowing smoke
« Reply #9 on: June 23, 2018, 02:48:42 pm »
Fresh oil change. 3.3 qts. Since it's really too hot to ride for the next 3 months or so, might just tear her down and freshen her up. She did sit for 10 years before i bought her. Be a good time to upgrade suspension and brakes too 👍

Offline Panda

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Re: Help... Connie blowing smoke
« Reply #10 on: June 23, 2018, 03:15:45 pm »
So an update. Finally got time to tinker. Fired it up, smoking (white smoke) from both sides. It's a fuel issue. Stuck float(s)?

Offline turbojoe78_MA

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Re: Help... Connie blowing smoke
« Reply #11 on: June 23, 2018, 04:34:44 pm »
If it's running just fine, I would be checking my coolant level just to be sure it's not low, like Nosmo said, white smoke is often coolant.
1968 Honda 160 Scrambler,  Sold / 1979 Kawasaki SR 650, Traded in for next one,  1978 Kawasaki KZ 1000 Z1R Turbo Sold / 1986 Kawasaki ZX 1000R Ninja / 1999 Kawasaki Concours / 2014 Kawasaki Concours 1400  COG memb# 8645


Offline works4me

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Re: Help... Connie blowing smoke
« Reply #12 on: June 23, 2018, 06:45:29 pm »
So an update. Finally got time to tinker. Fired it up, smoking (white smoke) from both sides. It's a fuel issue. Stuck float(s)?

No. White smoke is from water vapor.
There’s no water in fuel.
Guess again.

Offline MAN OF BLUES

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Re: Help... Connie blowing smoke
« Reply #13 on: June 23, 2018, 07:59:52 pm »
really surprising that with all the expert commentary on "could be this..or that, or..."""' :-X :-[ ::) :-X

nobody even chimed in and said "did you stick your nose down there and smell the end of the exhaust pipe(s), or stick your finger in one, and sniff...."?

 :truce: :-X


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Offline Panda

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Re: Help... Connie blowing smoke
« Reply #14 on: June 23, 2018, 09:20:17 pm »
Man of Blues, i did do that. It was super rich but after a minute or so, has more of a burning oil smell.

Offline Redbarron

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Re: Help... Connie blowing smoke
« Reply #15 on: June 24, 2018, 11:59:11 am »
Hello Panda:

Did you say that you put 3.3 quarts of oil in her?

If so that's you'r problem you have to much oil and it is being pushed back up the vent tube and drawn into the carbs.

Put her up on her center stand and wait a few hours the level in the sight glass should be no more than 3/4 full.

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Offline MAN OF BLUES

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Re: Help... Connie blowing smoke
« Reply #16 on: June 24, 2018, 07:03:54 pm »
Hello Panda:

Did you say that you put 3.3 quarts of oil in her?

If so that's you'r problem you have to much oil
and it is being pushed back up the vent tube and drawn into the carbs.

Put her up on her center stand and wait a few hours the level in the sight glass should be no more than 3/4 full.

ummmm.....
how much oil do you pour in?

when I drain both drains on centerstand, and replace my filter (SPOOFAK) with the long filter , and fill, iirc I dump in 3 qts, and about 7 oz, ( or 5 oz. if I use the short filter)  and it comes right up perfect in "the mysterious window" after running it.

book calls for 3.7 litres... on a 'dry' new engine ( 3.9 quarts...)
2.7 litres on an oil change when filter is NOT removed (2.85 quarts)
3.0 litres when filter is removed, and new OEM installed. (3.17 quarts)
the 4 oz. difference, ( if he used 3.3 quarts) in all actuality, equates to about 1/16" or less in level in the window...

all this talk about oily stuff, and the metric system, makes me hungry...
"may I please have a Royale with Cheese, Brett...." :103:
« Last Edit: June 24, 2018, 07:08:11 pm by MAN OF BLUES »

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Offline Daytona_Mike

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Re: Help... Connie blowing smoke
« Reply #17 on: June 25, 2018, 12:00:38 am »
Thanks for the responses. Smoke is white. I do have overflow tubes installed. No loss of power. Saw the smoke and went back home and got the cage.Will check it out after it cools off outside a bit... 8pm and 109°.
Panda, Thanks for answering and that is very good news that you have overflow tubes. I would think (my opinion) that since you have overflow tubes the smoke your seeing is not from a stuck float valve or you would know. Just to be sure  that none of those drian lines are not plugged  just blow in then and they should be clear.

Now white smoke. Some one else   said is normally coolant. I would agree ( maybe a head gasket) . Sometimes that coolant  comes out the exhaust  . Sometimes it goes into the oil making it milky. Sometimes both. No indication of milky oil? No loss off coolant? 
So did this happen right after an oil change? Are you halfway in the sight glass? (bike on center stand)  Do you mind me asking how many miles?Any other details you can think of recently that was done to the bike?


Normally aspirated engines have perpetual turbo lag
2000 Red C10 1052 kit
2008  C14 Silver Dammit Full AreaP- Flies are put back in SISF_Flash
2011  KLR650   688 piston ported and polished
2011  KTM 530    This thing is FUN!!

Offline Panda

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Re: Help... Connie blowing smoke
« Reply #18 on: June 25, 2018, 08:53:43 pm »
Daytona Mike, when i bought the bike 9ish months ago, PO had done a motor swap. Original motor was junk, so not 100% sure of miles. Oil is 1/2 way in sight glass. This happened about 600 miles after oil change and coolant flush. I have decided to tear her down and thriw some cash at it since I plan on keeping her for a long time. Wanted to powder coat a bunch of stuff anyway, and ceramic coat my exhaust. 😀 Figure a rebuild can't hurt. Then I'll know exactly how many miles are on it