imnothot02
New Member
oil coming out of exhaust, both engines, on cold start, any ideas or is this normal...
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Oil in exhaust
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Nate Surveyor
New Member
One thing comes to mind... Leaking seals on the rotary valve gear.
I hope it is not true, because you would probably be best off running it til it gets real bad, and then just get another motor, from SBT. Because fixing it requires removal of the crank shaft, and that is an almost complete engine tear down.
IF you let it sit for a week, and then pull the spark plugs, and crank it over, with the plugs out, (don't forget to ground the spark plug leads, on the provided metal prongs) and if lots of oil comes out, then that would confirm diagnosis. Keep a rag handy, to keep it out of your face.
Hope this is not the case...
Nate
I hope it is not true, because you would probably be best off running it til it gets real bad, and then just get another motor, from SBT. Because fixing it requires removal of the crank shaft, and that is an almost complete engine tear down.
IF you let it sit for a week, and then pull the spark plugs, and crank it over, with the plugs out, (don't forget to ground the spark plug leads, on the provided metal prongs) and if lots of oil comes out, then that would confirm diagnosis. Keep a rag handy, to keep it out of your face.
Hope this is not the case...
Nate
imnothot02
New Member
yea both of my engines do it, idk what the deal is, guess ill have to look into it more next spring...
It is possible that the rotary shaft seals are bad and allowing oil to seep into the cylinders.
Karl
Karl
Nate Surveyor
New Member
Well, just a few thoughts. When these engines are cold, they don't burn all the oil, (or all the gas for that matter) that they are fed. This then exits the exhaust pipe. I am pretty sure that there is even some kind of detergent in the oil, that helps it be more environmentally safe, when this happens.
It could just be some of that oil/gas mix, and be innocent enough.
I recommend that you check it out, during the winter months.
Repairs are cheaper during the off season, and you could get it fixed before spring, and be ready.... OR if there is NOTHING wrong, you could relax with more peace of mind.
Just a few thots.
I hope you have nothing wrong with it.
N
It could just be some of that oil/gas mix, and be innocent enough.
I recommend that you check it out, during the winter months.
Repairs are cheaper during the off season, and you could get it fixed before spring, and be ready.... OR if there is NOTHING wrong, you could relax with more peace of mind.
Just a few thots.
I hope you have nothing wrong with it.
N
......I agree.
To add with Nate here, after you start the motor, let it run for a couple minutes then shut down and read your plugs. If they are wet, the possibility of a cold burn is possible. You can also look at your gap or replace the plugs.
Start and run till the smoke or oil and gas seem to clear, then check again. This doesn't take away the fact that your rotary seals can be seeping by.
To add with Nate here, after you start the motor, let it run for a couple minutes then shut down and read your plugs. If they are wet, the possibility of a cold burn is possible. You can also look at your gap or replace the plugs.
Start and run till the smoke or oil and gas seem to clear, then check again. This doesn't take away the fact that your rotary seals can be seeping by.
imnothot02
New Member
AH thats probaly why, the thing smokes like a sob and the oil in exhaust was when it was cold that this occured, how long does it take to not be so smokey, i found this all when I was winterizing it...OH and the seal that seals the motor to the tuned pipe must be bad, duno where to get that...
imnothot02
New Member
how hard is it to change these...
Nate Surveyor
New Member
There have been persons, on this forum, with leaking rotary seals, who said their procedure was:
At beginning of riding day, pull spark plugs, crank it over, with a rag over to keep oil out of their face, and spew the oil out of the crankcase. Then, after doing this cleanout, replace the plugs, and run all day long!! (it would not turn over, or it would oil foul the plugs, on account of how much oil was in them, with the plugs in!)
Kinda funny. But if the seals are not leaking too badly...
Well, it just strikes me as odd that BOTH motors are doing the same thing, identically.
Just me thots.
Nate
At beginning of riding day, pull spark plugs, crank it over, with a rag over to keep oil out of their face, and spew the oil out of the crankcase. Then, after doing this cleanout, replace the plugs, and run all day long!! (it would not turn over, or it would oil foul the plugs, on account of how much oil was in them, with the plugs in!)
Kinda funny. But if the seals are not leaking too badly...
Well, it just strikes me as odd that BOTH motors are doing the same thing, identically.
Just me thots.
Nate
imnothot02
New Member
There have been persons, on this forum, with leaking rotary seals, who said their procedure was:
At beginning of riding day, pull spark plugs, crank it over, with a rag over to keep oil out of their face, and spew the oil out of the crankcase. Then, after doing this cleanout, replace the plugs, and run all day long!! (it would not turn over, or it would oil foul the plugs, on account of how much oil was in them, with the plugs in!)
Kinda funny. But if the seals are not leaking too badly...
Well, it just strikes me as odd that BOTH motors are doing the same thing, identically.
Just me thots.
Nate
both motors have 140 +/- psi in all cylinders and they start rite up...
Nate Surveyor
New Member
You just may be barking at a phantom. How much oil are we talking in the exhaust pipes?
ALL 2 strokes have a bit of oil in the exhaust, especially at startup.
Nature of the beast.
So, how much oil?
N
ALL 2 strokes have a bit of oil in the exhaust, especially at startup.
Nature of the beast.
So, how much oil?
N
imnothot02
New Member
teaspoon or so
Seals....
It sounds like you have a little leak by in your rotary seals. This is something you'll have to live with until it gets to be a problem with hydro locking or fouling plugs because to replace those seals is a complete bottom end rebuild or motor replacement.:cheers:
It sounds like you have a little leak by in your rotary seals. This is something you'll have to live with until it gets to be a problem with hydro locking or fouling plugs because to replace those seals is a complete bottom end rebuild or motor replacement.:cheers:
Nate Surveyor
New Member
:agree: with mr snipe above.
I'd keep running it, with small leakage like that.
You never know... it may last 5 more yrs like that, without worsening to an obnoxious level!
N
I'd keep running it, with small leakage like that.
You never know... it may last 5 more yrs like that, without worsening to an obnoxious level!
N
imnothot02
New Member
i jsut wish that sombody that i could trucs lived around here, the mechanic i was using charged me 250 bucks for a battery basicaly,...
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