blue/white smoke out of exhaust

[GateKeeper]

Measure the oil level per instructions from the Factory Suzuki Service Manual. You should not just randomly remove oil because you think it may be over filled. To measure is to know.

Most likely the engine needs a freshening. Valve stem seals often dry out and leak after 30 years. Could be rings too, but that's more high mileage related.

I put in what the manual said 3.8L this put the level to the top of the sight glass, so I drained a bit and it's now in between the 2 marks more or less midway of the glass.

she started up and some smoke was there this morning, but I don't think as much as yesterday, but I will see how she does over the course of the day, have to go out for lunch, then back to work, then home, and it was at these times I noticed the increase of smoke....

I only removed about a 1/2 cup more or less last night, so it's not really a whole lot.....and I am not low....that is still a good thing...

.

[cableguy]

Just a thought,

When you drained the old oil, did you notice how much came out? Did the full 3.8l come out? Not many people measure how much gets drained so dont worry about it, but if you noticed a slight bluish tint to the exhaust in the first place, you are starting to burn oil, and it will only get worse. So, if the level was down when you drained, then refilled with the proper amount, your oil pressure went up, and your leaky rings just got "leaker". If you were running a lesser amount than 3.8l, your oil pressure was less, hence less being forced past the rings.

[tkent02]

So, if the level was down when you drained, then refilled with the proper amount, your oil pressure went up, and your leaky rings just got "leaker". If you were running a lesser amount than 3.8l, your oil pressure was less, hence less being forced past the rings.

This is pure BS. Oil pressure is not dependant on oil quantity, unless there isn't any.

Oil coming through the rings is not dependant on oil pressure anyway, there is no oil pressure being pumped to the rings. Oil is pumped as far as the engine bearings, and thats it.

[RobG1970]

OK, I am a bit puzzled and a bit concerned.....

Sunday I changed the oil in the bike, and the oil filter as well....

Some dripped onto the wrapped header and is now smoking like a SOB, but that is not my concern, what is my concern is the blue and white smoke now coming out of the exhaust pipe, mostly on initial start up, goes away but not fully after a good warm up, revving the engine will produce more of the smoke until warmed up,,,, but I think I need to be concerned and I think I need to do something but what ? new rings ? do I need to pull the whole engine out to do this ?

This engine has never been pulled apart, it has had small leaks, but nothing major, and now I am seeing more and more oil weeping near the top left portion of the engine at the top cooling fin.

Am I in for an engine rebuild this winter ? Ohhhhh I hope not...

Anyone close by that wants to do it, on the cheap, I don't know if I have the energy, time or willingness, I am trying to get my Yamaha completed, I really don't want another project...

And should I stop riding the bike, before I cause major damage...

Thanks for and all info

Oil used was Rotella 15W40
.

" This engine has never been pulled apart, it has had small leaks, but nothing major, and now I am seeing more and more oil weeping near the top left portion of the engine at the top cooling fin."

You may want to consider re- torqueing the head to factory spec. The head gasket should reseal and the weeping should go away. It may also help with any possible compression lose. Also for the oil burning, these are low pressure engines, what’s burning may be the valves oil seals leaking a bit. Rotella 15W40 maybe a seem THICK for the engine, but the type of oil is a good choice, there is a lot of ZINC which help lubricate these old engines.There is a article on the MAIN page that may help you out. “More Than You've Ever Wanted To Know About Motor Oil”

http://www.thegsresources.com/garage/gs_oil.htm

http://www.thegsresources.com/garage/gs_engcutaway.htm

[GateKeeper]

Well, so far it's going like this...

Went for lunch started the bike up, some smoke but not a lot, not as much as yesterday, but more than before the oil change.

So I possibly had a bit too much in there, now looking at the sight glass, even with the bike running, it's more or less in the middle, this is a good thing.

But I am now finding the bike is being a pain in the arse to stay at idle more so than it used to be in the past.....

I think

a) it's time to redo the motor, seals, rings, etc....

or

b) get rid of the bike, with full disclosure, and purchase something newer.....

I like the old girl, but the thought of wrenching on her again, I am really not that much in love with her.....

sigh.........

.

[GS(X)400]

Man i would kill for your bike. Dont give up on her. Pull that engine and do a full rebuild. You wont need to touch it for anythig major again

also try running some seafoam through a tank you might just have some residual effects of overfilling

[tkent02]

So I possibly had a bit too much in there, now looking at the sight glass, even with the bike running, it's more or less in the middle, this is a good thing.

If you can see it at all when it's running there is too much oil. Shut it off, put it on the centerstand, let it sit a minute, you should see the top of the oil in the sight glass.

[GateKeeper]

Man i would kill for your bike. Dont give up on her. Pull that engine and do a full rebuild. You wont need to touch it for anythig major again

also try running some seafoam through a tank you might just have some residual effects of overfilling

make me an offer....you might be surprised....

just put a full tank of 91 Shell in her, don't think I will need any seafoam...

If you can see it at all when it's running there is too much oil. Shut it off, put it on the centerstand, let it sit a minute, you should see the top of the oil in the sight glass.

no center stand on the bike, but I use the car jacks under the swing arm on each side, I will put her on them when I get home, and take a picture...

.

[GS(X)400]

make me an offer....you might be surprised....

just put a full tank of 91 Shell in her, don't think I will need any seafoam...

Yea i think my wife would be supprised as well

[GateKeeper]

Yea i think my wife would be supprised as well

If you don't tell her or show her it's not a surprise

tell her she gets the 400 and you get the 750.....it's a win win situation....

.

[GS(X)400]

If you don't tell her or show her it's not a surprise

tell her she gets the 400 and you get the 750.....it's a win win situation....

.

I already built it for her she just doesnt know

[Starion007]

Its not the amount you have in there. I would change the oil back to the type you removed before I rode it again. OR its the filter restricting flow, can you check the pressure switch to make sure it works? The oil goes to the filter first then the motor, I realize the filters are supposed to have a rubber relief port in case the filter is plugged but you could have gotten a bad filter.

[GateKeeper]

Its not the amount you have in there. I would change the oil back to the type you removed before I rode it again. OR its the filter restricting flow, can you check the pressure switch to make sure it works? The oil goes to the filter first then the motor, I realize the filters are supposed to have a rubber relief port in case the filter is plugged but you could have gotten a bad filter.

I am not following this, what is your point....?

the filter is the same as the one I took out, I purchased 3 of them at the same time, I now have one left.

The oil used now, is no worse than the stuff from before, actually it should be a better oil.

Pressure switch should be working, the oil light goes out, almost as soon as the bike starts and is running....

I can go back to all the same, just not sure what it will do to help.


I have some videos of the bike running, just uploading them to photobucket, once ready I will post here, perhaps someone can hear or see something I don't....

Thanks

[tkent02]

Its not the amount you have in there. I would change the oil back to the type you removed before I rode it again. OR its the filter restricting flow, can you check the pressure switch to make sure it works? The oil goes to the filter first then the motor, I realize the filters are supposed to have a rubber relief port in case the filter is plugged but you could have gotten a bad filter.

More BS. There is no rubber relief port.

[GateKeeper]

OK here are 2 videos, I am trying to get the 3rd one up as well...

click on the picture to start the video.....

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click on the picture to start the video.....

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