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Captive New Yorker....
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264 Posts
Discussion Starter #1
For some reason now when I start the bike, the right exhaust blows white smoke for about the first 30 seconds, then stops. No smoke at all out of the left side. I have custom pipes, no goats belly. After the first 30 seconds no smoke at all.

Something to be concerned with??
 

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Premium Member
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5,236 Posts
For some reason now when I start the bike, the right exhaust blows white smoke for about the first 30 seconds, then stops. No smoke at all out of the left side. I have custom pipes, no goats belly. After the first 30 seconds no smoke at all.

Something to be concerned with??
nope, flooding a little on start up on one cylinder especially if it is cold when it does it.If it always does it ,may be a valve stem letting a little oil into the cylinder when parked and when you start it ,the drop or two of oil is burned up,creating a little smoke.Ever see a 4.3 chevy with over 90,000 miles ,it is kinda common with them.

Keep an eye on the oil level if it is not consuming a noticeable amount ,ride it like you stole it.
 

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Captive New Yorker....
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264 Posts
Discussion Starter #3
I noticed this morning that in that pipe, there was condensation at the end of it. Strange, that there would be condensation in one pipe, and not the other. I keep the bike in the garage. It was about 55 in there when I left this morning....
 

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Sparky!!!
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8,696 Posts
that is weird. are the carbs synced and tuned right? also are the right and left exhaust pipes reaching the same temp. It could also be carbon build up in the pipe, or... a million other things.. If I were really concerned, I would run a compression test, and cylinder leak down test to confirm its not an issue with the head, I would then run a cooling system pressure test to make sure your cooling system isn't to blame, after those two check out good, turn to the fuel system and make sure the carbs are balanced.

Try parking on the centerstand over night. and see if it still smokes or if both sides smoke. Also try parking it in the opposite direction of how you normally park, maybe the left side of your garage is slightly cooler than the right.
 

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For some reason now when I start the bike, the right exhaust blows white smoke for about the first 30 seconds, then stops. No smoke at all out of the left side. I have custom pipes, no goats belly. After the first 30 seconds no smoke at all.

Something to be concerned with??
White smoke usually when first started is condensation water settled in pipes turning to steam as the heat rises my Yam does it all the time when it is cold, would have thought it would be both pipes though, the other reason would be head gasget but would smoke all the time :smiley_th
 

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Captive New Yorker....
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264 Posts
Discussion Starter #6
that is weird. are the carbs synced and tuned right? also are the right and left exhaust pipes reaching the same temp. It could also be carbon build up in the pipe, or... a million other things.. If I were really concerned, I would run a compression test, and cylinder leak down test to confirm its not an issue with the head, I would then run a cooling system pressure test to make sure your cooling system isn't to blame, after those two check out good, turn to the fuel system and make sure the carbs are balanced.

Try parking on the centerstand over night. and see if it still smokes or if both sides smoke. Also try parking it in the opposite direction of how you normally park, maybe the left side of your garage is slightly cooler than the right.
Looks like there is carbon build up on the inside of the pipe, so maybe that's it. I'll try parking it facing the other way on the center stand and see if that does anything.... The engine is running beautiful right now, so I'm not gonna monkey with it too much!!
 

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If it ain't broke, don't fix it. Mine smokes a bit on start from time to time when it's cold out for 30-45 seconds, but then the front cylinder is a bit slower waking up than the rear. I think that's due to the choke (enrich system) being on the rear carb only, or do I have that wrong?. No oil consumption, plugs clean or anything to be worried about like that and it's only after sitting over night and not every day. Mine could be a bit of leaking past the valve seals, had a Chevy that did this, but there was more smoke with it.

Mine ain't broke, so I ain't fixin' it.
 

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Sparky!!!
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8,696 Posts
try once on center stand and once off... is the carbon on one side and not the other? or more in the right than in the left.. carbon traps moisture as well.
 

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Banned
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Mine gets same smoke for about 30 sec to 1 min as well. I think its condensation. Oil would be blue, mixture would be black.
Remember where we live Peter. 60 during the day, and 25 at night, lately anyway, lol.
 

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Captive New Yorker....
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264 Posts
Discussion Starter #10
Yeah, I figured it was the temp change. I keep the bike in the garage, but it's not heated. Garage is attached to house, so it doesn't get down to the outside temp. If it goes down to say 35 outside, the garage is usually around 50. What I find odd is it's just the right side. Maybe it's the length of the pipe, or the way it's pitched. Regardless, the bike is running awesome now!!!
 

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Premium Member
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3,026 Posts
If it is a lot of white smoke, from only one cylinder, that is a common sign of a blown head gasket, allowing coolant to leak into the cylinder. It may go away after the bike is warmed up, things expand, and seal it. Check your oil for any signs of coolant.
 
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