Bit of smoke out left tail pipe on startup

[Steve]

Cheer up, Mike, it'll get worked on over the Holidays.

.

[chef1366]

How many miles are on the bike? When you say cold is it say below 50F?
What is the compression numbers? Is there oil blowby in the airbox?

[trippivot]

you are positive it is not water vapor on a cold engine ??
does it still smoke after fully hot??

what do the plugs look like. (bad plug cap/ bad plug will produce this too)

use ONLY NGK!!

you need to do

1. a leak down test at TDC compression all 4 cyl verify where pressure is escaping
2. a dry compression test all 4 cyl
3. a wet compression test all 4 cyl

the results along with plug color will tell if it simple or expensive

post results and depending--??-- there is another tier of diagnosis tests

[Dink]

Do you park it on the sidestand?? or centre stand?? Is the bike consuming oil?? how is fuel milage?? Any ridability issues?? Done and electrical cleanup???

Dink

BTW I use anything EXCEPT NGK plugs.

[donimo]

Yours smokes out the left, I have one in my garage (not mine) that smokes out the right. Maybe we need to get together and compare notes?



.

well, after "fixing" mine it smokes out both, so do you really want my help?

[donimo]

How many miles are on the bike? When you say cold is it say below 50F?
What is the compression numbers? Is there oil blowby in the airbox?

30,000km, so.... 17ish I think?

about 10C, so again I think that is 50F

I have no way to test compression ATM, this is supposed to be my "cheap" hobby cause cars got to pricey for the wife (shhh I know its no better, but she doesnt)

I will check the airbox but I just oiled the filter so it may be hard to tell.


It DID NOT SMOKE after I got the bike and it was warmed up, when taken out in the morning the next day it DID SMOKE out the left pipe.

NOW it SMOKES ALL THE TIME out BOTH pipes.

[donimo]

you are positive it is not water vapor on a cold engine ??
does it still smoke after fully hot??

what do the plugs look like. (bad plug cap/ bad plug will produce this too)

use ONLY NGK!!

you need to do

1. a leak down test at TDC compression all 4 cyl verify where pressure is escaping
2. a dry compression test all 4 cyl
3. a wet compression test all 4 cyl

the results along with plug color will tell if it simple or expensive

post results and depending--??-- there is another tier of diagnosis tests

pretty certain, its greyish colour and it is a LOOOOT of smoke right away and when you rev it and it sticks around for a long time

[donimo]

Do you park it on the sidestand?? or centre stand?? Is the bike consuming oil?? how is fuel milage?? Any ridability issues?? Done and electrical cleanup???

Dink

BTW I use anything EXCEPT NGK plugs.

I have only ridden it around the block

center stand though, can answer that one

phew, no answers then LOTS of answers

[Steve]

I will check the airbox but I just oiled the filter so it may be hard to tell.

what kind of filter?

how did you oil it?

how much did you oil it?

yeah, we ask a lot of questions, but that's because we are not there in person.

.

[donimo]

what kind of filter?

how did you oil it?

how much did you oil it?

yeah, we ask a lot of questions, but that's because we are not there in person.

.

Oh, I prefer too many to not enough any day.

It is a peice of furniture foam the PO put in, I am not a fan, but until I come up with something better...

I cleaned it with some gasoline and let it dry for a while then poured some mobil 1 full synthetic on there (makes it go faster) and squeezed it till the excess was gone and it seemed evenly on there, then stuffed it back in?

I used maybe a couple shot glasses full, but squeezed some out?

[trippivot]

I would not worry . not yet . up to a quart -per 1000 miles is "considered " normal oil consumption.

wait until you have verified 100% fresh oil and gas running through the engine and say 100 miles riding distance on it .. there may be a possibility of carbon becoming un- stuck or something like that and it works it self out. ( gas in the oil comes out after 300 degrees F but it takes a long time on the center stand)

take some oil in a back pack and just stop and look at the level if it worries you.

but a few good HOT-COLD cycles and some miles under operating load will be the litmus test- if you need to do some honing and rings.

think of it like mosquito protection . lol

[donimo]

Well the issue is more that it didnt smoke hot, and oly out one pipe cold, then I rebuilt the carbs, and now it smokes a lot worse all the time?

[trippivot]

fuel control issue do not worry, unless you overheated the cylinders while tunning.

be sure to have a fan on the engine when tunning carbs and sitting in a stationary position.


stop when the head/ cylinders gets to 300 degrees F let it cool down with a fan on it

[TheCafeKid]

Take the plugs out. Look at them. If they are BLACK AND FLUFFY/SOOTY, you're simply too rich, which is the cause of your smoke. If they are SHINEY BLACK and OILY, you have a problem with oil bypass/consumption. Also, oil and fuel have pretty different "stinks" when they are burning. Oil smells like that crappy car down the street that looks like its on fire. Gas smells like unburnt raw gasoline. It will burn your eyes actually. Not that i suggest sticking your face in the vapours, but you get my drift. BTW, motor oil isnt what one generally uses to oil your filter, and you have from the sound of it, WAY to much on your filter. LIGHTLY oiled. As in, a light coating. Too much oil in your filter will choke off air flow, causing the bike to run rich. Causing smoke, etc etc ad nauseum. I suggest pulling it out, and washing it again, then lightly oiling it. Also, when you "rebuilt" your carbs, HOW did you do it? Did you set float hight as per the manual? What are your adjustment screws set at??

[donimo]

I oiled the filter as per the instructions in my Haynes manual, which said motor oil was fine, what should I use?

I wanted to make a better one anyways I have some better foam the stuff in there has really tiny pores, looks like it would be comfy to sit on though?

I rebuilt the cabs as per this site and my haynes (bit of a combo), replaced all the o-rings with suzuki sourced new ones and new float gaskets. I soaked everything in cleaner for about a week, except the carb bodies which only got a milder partial dip and a very thourough spray and compresser workover (I could not get them apart, trust me I tried every trick in the book besides a sledge)

I did not set the float height (perhaps mistakenly) because, well I dunno why really.

adjustment screws are 1.5 turns out, as per manual, but when I started it up and played with them they did not seem to do anything?

I will check the plugs hopefully today (have to reinstall Vista on this PC today as well cause a MS update screwed it up good, that can take a while, THANKS FOR THE HELP MS SUPPORT!!!)