SuzukiSavage.com - white smoke problem

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white smoke problem
04/19/22 at 00:37:00

Good morning
I write from Italy via translator so forgive mistakes
I have a problem with my wife's Savage, I have fitted a new overhauled engine, according to the old owner, but it has a small problem, at first ignition it releases white smoke for about a minute and then nothing ... the smoke it stops as soon as the engine starts to heat up and if I leave the bike off for an hour the problem returns when it is turned on .... I am attaching the video in the next message ...... solutions?

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choppi2131 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 5	Re: white smoke problem Reply #1 - 04/19/22 at 00:38:28 here is the video https://www.youtube.com/watch?v=zyO6U12PSG8
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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 17835 Camp Springs, Kentucky Gender:	Re: white smoke problem Reply #2 - 04/19/22 at 03:45:12 Does your bike still have the stock vacuum operated petcock? Check the oil level n the crankcase and make sure it is not overfull. And check to see if your oil has a faint smell of gasoline.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5008 Manteca , CA Gender:	Re: white smoke problem Reply #3 - 04/19/22 at 12:43:00 Possible the fuel is old/bad
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28387 Tucson Az Gender:	Re: white smoke problem Reply #4 - 04/19/22 at 13:40:06 Cold outside? White smoke is often just water vapor that builds up overnight in the exhaust.
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justin_o_guy2

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Re: white smoke problem
Reply #5 - 04/19/22 at 15:59:07

Serowbot wrote on 04/19/22 at 13:40:06:

Cold outside?
White smoke is often just water vapor that builds up overnight in the exhaust.

Yeah, but he said he can run it till it stops, let it cool for an hour, and it's back.

I'm baffled, not picking. I didn't reply, because I had no idea.
I'm wishing Dave would explain his thinking.

Would a bit of gas in the oil do that?

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Dave

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Re: white smoke problem
Reply #6 - 04/19/22 at 16:52:48

justin_o_guy2 wrote on 04/19/22 at 15:59:07:

I'm baffled, not picking. I didn't reply, because I had no idea.
I'm wishing Dave would explain his thinking.

Would a bit of gas in the oil do that?

Some folks who have had the original petcock fail and add gasoline to the oil have experienced the crankshaft throwing around the fuel/oil mix and getting too much vapor out the breather. The oil/fuel mix can then make the engine run poorly......I wondered if just a bit too much might cause the engine to smoke when it is cold......but not smoke so much once the engine is warmed up.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: white smoke problem Reply #7 - 04/19/22 at 18:07:35 Okay, sounds like mechanic thinking. Makes sense.
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Hiko Senior Member Offline SuzukiSavage.com Rocks! Posts: 250 Tauranga New Zealand Gender:	Re: white smoke problem Reply #8 - 04/19/22 at 20:46:40 My bike did this once a few years ago The day was cold and humid It never happened again and I put it down to weird atmospheric conditions How often has this happened and is it due to the atmosphere do you think?
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choppi2131

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Re: white smoke problem
Reply #9 - 04/19/22 at 22:55:23

Dave wrote on 04/19/22 at 03:45:12:

Does your bike still have the stock vacuum operated petcock?

Check the oil level n the crankcase and make sure it is not overfull.

And check to see if your oil has a faint smell of gasoline.

thanks Dave
1: it is still the original
2: the oil level is below the maximum level
3: no gasoline smell like when it gets flooded, classic exhaust smell

white smoke does so only when the engine is cold and in any ambient temperature
when the engine is hot, the problem does not arise

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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 17835 Camp Springs, Kentucky Gender:	Re: white smoke problem Reply #10 - 04/20/22 at 03:34:23 Hold a clean mirror behind the muffler and allow the white smoke to collect on the face of the mirror. If it is just water it will condense on the mirror as water droplets. If it is fuel or oil it will make a mess on the mirror.
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DragBikeMike

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Re: white smoke problem
Reply #11 - 04/20/22 at 04:04:17

That's a lot of smoke Choppi. Can you take some pictures of your engine breather hose and post them. We need to see how your breather hose is hooked up. It would also be helpful if you could check compression and post the reading. On a stock engine, it should be around 150 psi.

You mentioned that the engine was overhauled. Doesn't seem like it was overhauled correctly. You might have worn valve stems, valve guides, and/or valve guide seals. Oil might be running down the valve stem or between the guide and the cylinder head. That generally causes smoking on startup. However, it usually clears up much quicker than your video shows. The oil will run down the stem when the engine is shut down. It accumulates in the intake or exhaust port and when you first start it up the oil burns off. Unfortunately, you have to tear it all apart to check the stems & guides.

Are you sure the smoking clears up after a few minutes? It doesn't look like it's slowing down to me. Just seems to continuously pour out of the muffler. Does the smoke clear up completely or just diminish a bit once the engine is warmed up? If it never clears up the rings are suspect too.

I guess you might have a problem with a missing breather screen. There's a screen assembly in the head cover that separates oil particles from the air. If that screen is missing, oil droplets get carried into the airbox/air filter. However, if that were the problem the smoking would never stop. It would smoke continuously and probably smoke much worse as engine speed increased. Check your air filter and let us know if it's full of oil.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: white smoke problem Reply #12 - 04/20/22 at 05:37:58 Running on the side stand will starve the cam for oil. Stand it up.
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choppi2131

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Re: white smoke problem
Reply #13 - 04/20/22 at 07:12:15

DragBikeMike wrote on 04/20/22 at 04:04:17:

That's a lot of smoke Choppi. Can you take some pictures of your engine breather hose and post them. We need to see how your breather hose is hooked up. It would also be helpful if you could check compression and post the reading. On a stock engine, it should be around 150 psi.

You mentioned that the engine was overhauled.

hi Drag
yes the smoke is a lot but after the engine heats up (a few minutes) it returns to normal, it is only the video that ended before, when the engine is hot the problem does not arise
is the display unit the one shown in the photo?

https://i.postimg.cc/fWmbbjrk/Headcover-2.jpg

Dave
made the mirror test
no droplets of condensation just dirty with oil droplets

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Hiko Senior Member Offline SuzukiSavage.com Rocks! Posts: 250 Tauranga New Zealand Gender:	Re: white smoke problem Reply #14 - 04/20/22 at 21:31:11 Is that headcover pic in link above a mirror image?
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