Two Smoke or Too Much Smoke?
Abadonn
<<Now before you start telling me the rings are shot etc.>>
sigh..2 strokes DON'T smoke cause their rings maybe shot. 4 strokes do. As
the oil in a 4 stroke is kept seperate from the combustion chamber (by
rings, valve seals etc) then it shouldnt smoke much, as it gets worn it will
smoke more as more oil gets through worn bits into the combochamber. In a 2
stroke ALL the oil, after whirling around the crankcase lubin' up shafts and
stuff, exits (via little chambers) into the combustion chamber before it is
expelled outta your exhaust. This is why 2strokes need constant oil. So worn
rings may decrease power but not affect oil/smoke.
For an example of how oily/smoky 2 strokes get check out the GP racers...do
they emit vast amounts of smoke? No. A bit...but only really on the first
lap, after that very little should come out. So if yours does smoke after a
good hard run then there is something wrong.
Quality oil helps...they are often claim to be smokeless or reduced smoke.
Is the oil pump adjusted properly? Exactly how bad is it? I havent owned a 2
stroke for 12-13 years (well, my RD400 is still in the garage...but it aint
run for that amount of time), so perhaps some other strokers out there can
help.
PaulH
Richard.b
something is wrong. But my 185 seems to smoke more than I would have
expected. This is my first two stroke so I don't have anything to
compare it with.
Now before you start telling me the rings are shot etc. Here are some
more details.
The bike is 6 years old and still hasn't done 2000km. I bought it 6
months ago with 1300 on the clock and have managed to add another 600km.
Could it be that it has built up a lot of crap over the years it was NOT
ridden? I thought it might stop when this crap was burnt away, but that
does not seem to be the case.
Will different two stroke oil cause more or less smoke.
Are there any adjustments I could make?
Should I worry?
Zebee Johnstone
Richard.b <rich...@eudoramail.com> wrote:
>more details.
>The bike is 6 years old and still hasn't done 2000km. I bought it 6
>months ago with 1300 on the clock and have managed to add another 600km.
>Could it be that it has built up a lot of crap over the years it was NOT
>ridden? I thought it might stop when this crap was burnt away, but that
>does not seem to be the case.
Well, depends on how you have been burning it away.... A twoey will
collect oil and general gunge in the exhausts, the best method
of dealing with this is to rev the nuts off it for a while. Take
it out and fang it. If everyone who has been riding it has been
taking it easy on it, then a good hard fang may be what it needs.
Really grunged up ones need their baffles removed and cleaned off
with an oxy torch.
Zebee
adam
when cold, but once at operating temperature, or better still when the
muffler gets warm, there should be no real smoke at idle. Giving it a rev
will produce smoke even when hot, but the amount should be substantially
less than when cold.
Different oils do affect smoke levels, my RGv like the penzoil stuff, my
brother in laws likes shell. Same engine, different ages and slightly
different carbies.
If it continues to smoke a large amount, you may need to investigate the oil
pump flow levels.
Adam.
Richard.b wrote in message <363E5A7E...@eudoramail.com>...
>I know that two strokes are supposed to smoke and if they aren't then
>something is wrong. But my 185 seems to smoke more than I would have
>expected. This is my first two stroke so I don't have anything to
>compare it with.
>Now before you start telling me the rings are shot etc. Here are some
>more details.
>The bike is 6 years old and still hasn't done 2000km. I bought it 6
>months ago with 1300 on the clock and have managed to add another 600km.
>Could it be that it has built up a lot of crap over the years it was NOT
>ridden? I thought it might stop when this crap was burnt away, but that
>does not seem to be the case.
David Bridges
You could probably adjust the oil pump but you then risk having too little
oil being pumped into the engine. Much better to have the smoke and less
risk of a siezure.
Aparently you can get oil's which burn with very little smoke but i've never
actually used any.
See ya,
David Bridges.
TRX
Clem Doherty
>Now before you start telling me the rings are shot etc.
Rings have no effect on two-stroke smoking (dry sump!) (main bearings on
"posilube" bikes may have a slight effect).
Naa, just do what ZeeBee says and take it for a run up the freeway 50k and
back.
If it's still a problem, then check the oilpump adjustment (I assume you ARE
using 2 stroke oil?).
Clem
Marty Wicks
<rich...@eudoramail.com> wrote:
>I know that two strokes are supposed to smoke and if they aren't then
>something is wrong. But my 185 seems to smoke more than I would have
>expected. This is my first two stroke so I don't have anything to
>compare it with.
>Now before you start telling me the rings are shot etc. Here are some
>more details.
>The bike is 6 years old and still hasn't done 2000km. I bought it 6
>months ago with 1300 on the clock and have managed to add another 600km.
>Could it be that it has built up a lot of crap over the years it was NOT
>ridden? I thought it might stop when this crap was burnt away, but that
>does not seem to be the case.
>Will different two stroke oil cause more or less smoke.
>Are there any adjustments I could make?
>Should I worry?
Dumb question time. Does it have direct injection or pre-mix (for the
2 smoke oil)?
Cheers,
Marty
'97 KTM 400SC - Turning money into noise.
Hamish Alker-Jones
> Rings have no effect on two-stroke smoking (dry sump!) (main bearings on
> "posilube" bikes may have a slight effect).
> Naa, just do what ZeeBee says and take it for a run up the freeway 50k and
> back.
> If it's still a problem, then check the oilpump adjustment (I assume you ARE
> using 2 stroke oil?).
> Clem
Hamish
Richard.b
Marty Wicks wrote:
>
> Dumb question time. Does it have direct injection or pre-mix (for the
> 2 smoke oil)?
>
- It has direct injection.
Peter Sanders
Two-stroke oils differ in viscosity and boiling point. What are
you using? Synthetics generally smoke less. I used Pennsoil synthetic
in my Fantic Trials 'bike because it was really light so it didn't load
up with all the idling Trials 'bikes do. My son's KDX200 was much
happier on Castrol TT synthetic because it spent so much time revving
out hard.
============================================================
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/ DSTO \ Combatant Protection & Nutrition Branch, AMRL.
\_.--._/ Defence Science & Technology Organisation
v Fax : 61-3-9626 8410 Voice: 61-3-9626 8411
Peter Sanders
sand...@melbpc.org.au (Private)
Voice: 61-3-9337-6612
Honda XR600RN (Hagar), BMW K100RT (Brunnhilde)
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Kath Knight
Stupid question, but I presume you've checked to make sure it ain't
burning transmission oil?
Buggered crank seals cause lots of smoke.
Kath
Jeremy
<rich...@eudoramail.com> wrote:
>
>
>Marty Wicks wrote:
>
>>
>> Dumb question time. Does it have direct injection or pre-mix (for the
>> 2 smoke oil)?
>>
>
>- It has direct injection.
It's not a ER is it?
-Jeremy
'88 DT200R
(Still searching something bigger)
Jeremy
>-Jeremy
>'88 DT200R
>(Still searching something bigger)
Make that still searching 'for' something bigger...
It pays to read your signature before posting! : )
-Jeremy
'88 DT200R
(Still searching for something bigger)
Richard.b
It is definately a TS185. BUT it has ER on the seat.... go figure.
Jeremy wrote:
> On Thu, 05 Nov 1998 09:25:44 +1100, "Richard.b"
> <rich...@eudoramail.com> wrote:
>
> >
> >
> >Marty Wicks wrote:
> >
> >>
> >> Dumb question time. Does it have direct injection or pre-mix (for the
> >> 2 smoke oil)?
> >>
> >
> >- It has direct injection.
>
> It's not a ER is it?
>
Tim Douglas
>I know that two strokes are supposed to smoke and if they aren't then
>something is wrong. But my 185 seems to smoke more than I would have
>expected. This is my first two stroke so I don't have anything to
>compare it with.
If there's no consequence to the smoking then don't bother about it.
Or maybe track down some oils that don't smoke as much.
>Now before you start telling me the rings are shot etc. Here are some
>more details.
Rings have no connection to 2stroke smoke and I suspect no other
characteristic of the engine influences smoke density - just the type
and quantity of oil getting to the cyclinders and the present
condition of the residues in the exhaust pipe and the pipes
temperature.
>The bike is 6 years old and still hasn't done 2000km. I bought it 6
>months ago with 1300 on the clock and have managed to add another 600km.
>Could it be that it has built up a lot of crap over the years it was NOT
>ridden? I thought it might stop when this crap was burnt away, but that
>does not seem to be the case.
>Will different two stroke oil cause more or less smoke.
Yep.
>Are there any adjustments I could make?
Yep, but be careful. A workshop manual should have advice on the
proper setting of the pump. Wanna check up on that?
>Should I worry?
Nope.
--
See you,
Tim Tim.D...@tassie.net.au
(finger tdouglas"at"ozemail.com.au for pgp key)
RussellM
I use Motul 2T oil (I think its called 600 or somethat, ) Its synthetic, my
bike doesn't smoke one bit (except when I start it from cold, then it smokes
like a friggin chimney...) even the Bimota V-Due (500cc 2 stroke) which
supposedly doesn't smoke, still smokes....
RussellM
(Sniffin' that wonderful 2T smell, god I love 2 strokes.....)
95 Cagiva Mito EV
96 Ducati Monster 600
Mak Entwistle
lots of smoke and seemed underpowered. Adjusted up the oil pump and presto more
go. Firstly set your oil pump according to the manual, give it a good long ride
and see how things improve, remember it will take a while to burn off all the
crap in your pipes. In time if it still smokes a bit there are options. Firstly
try different oils, my experience is the more you pay the less they smoke,
though if you change from a mineral to a synthetic oil you should drain off and
flush the old oil. Secondly, I don't know about your bike but with RZ's the
marks to set the oil pump are quite conservative. It's accepted that you can
adjust off the pump on the RZ a fraction more with no problems. What I watch for
when I do this is just a whiff of smoke on full throttle, and that the muffler
remains wet from oil.
Mark Entwistle, RZ350.