How to tell if it smokes too much ..
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How to tell if it smokes too much ..
I just got my 1991 KDX250 back together, and she's still a smoker.
It seems to me like it's too much white smoke (with a light tint of blue). It smokes at idle, and it smokes more whan I rev it.
Can I drain the tranny oil and let it idle to see if it goes away, perhaps ruling out crank seals?
Can i drain the coolant and run for a cupla minutes to rule out head leak (Or is this too dangerous even for a short period)?
The bike has a new piston and rings. It has 190 compression.
It has a new head gasket (cometic).
I'm running amsoil at 40:1.
Jets are 38 pilot, 160 main and 1368 needle on the top clip. Air screw out 1 1/2 turns.
It idles and runs fine, except for the smoke.
It seems to me like it's too much white smoke (with a light tint of blue). It smokes at idle, and it smokes more whan I rev it.
Can I drain the tranny oil and let it idle to see if it goes away, perhaps ruling out crank seals?
Can i drain the coolant and run for a cupla minutes to rule out head leak (Or is this too dangerous even for a short period)?
The bike has a new piston and rings. It has 190 compression.
It has a new head gasket (cometic).
I'm running amsoil at 40:1.
Jets are 38 pilot, 160 main and 1368 needle on the top clip. Air screw out 1 1/2 turns.
It idles and runs fine, except for the smoke.
- Indawoods
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Main sounds big...
White smoke is water.... what is the temp there?
White smoke is water.... what is the temp there?
*** Administrator //***
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
- canyncarvr
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Re: 'Can I drain the tranny oil and let it idle to see if it goes away..'
No.
Well, you CAN...but it would be a foolhardy move.
You can test for leaks using a leakdown tester device. Basically, attach a pressure/vacuum guage through the oil filler plug (as an example), run the bike, see what happens. Natch...the breather needs to be blocked off. It would help to have a baseline (a reading done when it worked fine). You can use it to guage changes you DO make, too.
Does the bike LOSE tranny oil? If it's enough to show in the smoke, it will show as a loss of fluid.
That said, as Inda said..white isn't tranny oil. Coolant leaks will show as 'white'..and it will smell sweet, too.
A 2-smoke may well have 'white' smoke..especially when it's cold..and 25º is cold.
If you have no other telltales (fluid loss, sweet smell, steam-bathed looking sparky plug), don't worry about it.
imo and all that extraneous baloney............
No.
Well, you CAN...but it would be a foolhardy move.
You can test for leaks using a leakdown tester device. Basically, attach a pressure/vacuum guage through the oil filler plug (as an example), run the bike, see what happens. Natch...the breather needs to be blocked off. It would help to have a baseline (a reading done when it worked fine). You can use it to guage changes you DO make, too.
Does the bike LOSE tranny oil? If it's enough to show in the smoke, it will show as a loss of fluid.
That said, as Inda said..white isn't tranny oil. Coolant leaks will show as 'white'..and it will smell sweet, too.
A 2-smoke may well have 'white' smoke..especially when it's cold..and 25º is cold.
If you have no other telltales (fluid loss, sweet smell, steam-bathed looking sparky plug), don't worry about it.
imo and all that extraneous baloney............
Consider the source
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- Mr. Wibbens
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Well, I decided to take off the head to make sure everything looked good anyway. It did, and I saw no evidence of head gasket leaks.
I buttoned it up with a new head gasket -- and promptly snapped off a cylinder head stud! I was using a torque wrench set to 18 ft lbs, so either my wrench is no good or the stud was bad.
I twisted it out with some vise grips, and got a new stud at the hardware store of the exact same 8X40 size. (it's just steel, right?) So i'll get another head gasket and try again. (I understand they are no good once they are squished)
I buttoned it up with a new head gasket -- and promptly snapped off a cylinder head stud! I was using a torque wrench set to 18 ft lbs, so either my wrench is no good or the stud was bad.
I twisted it out with some vise grips, and got a new stud at the hardware store of the exact same 8X40 size. (it's just steel, right?) So i'll get another head gasket and try again. (I understand they are no good once they are squished)
1991 KDX250
- scheckaet
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The same thing happened to me when I did my fork conversion.
if your torque wrench is as good as mine (read cheap), I always keep it at the lowest setting when not in use and when I do use it, I always go 5 lb at a time till I reach the correct torque. If I feel like it should have cliqued already I start over, hope that makes sense.
As for the head gasket I heard some re-use them after applying some copper spray or sumthin like that but never tried it myself.
Wilf
if your torque wrench is as good as mine (read cheap), I always keep it at the lowest setting when not in use and when I do use it, I always go 5 lb at a time till I reach the correct torque. If I feel like it should have cliqued already I start over, hope that makes sense.
As for the head gasket I heard some re-use them after applying some copper spray or sumthin like that but never tried it myself.
Wilf
02 KX 200 hybrid: RB head and carb
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- Indawoods
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I have reused them... get the copper gasket spray if you don't want to buy another gasket.
*** Administrator //***
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
- canyncarvr
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If you use a gasket spray..take note of the small round hole in the gasket that 'mates' with an ellipsis kind'a shaped hole in the cylinder/head. Try to remove the sprayed material from the gasket in the ellipsis area. When you don't, that part of the gasket exposed to coolant will take the sprayed material off..to float around your coolant system...get stuck on the rad cap gasket.
I don't know that's a big deal...I've NOT removed the overspray most of the time (and then found the floaters) and don't know that it causes problems...but...metal floaters in the coolant system doesn't seem like a wonderful thing to me.
Good thing you got the stud out! Sometimes they don't come out so good.
Even a good torque wrench loses it's 'tune' after awhile. There are tool shops that calibrate wrenches...........
I don't know that's a big deal...I've NOT removed the overspray most of the time (and then found the floaters) and don't know that it causes problems...but...metal floaters in the coolant system doesn't seem like a wonderful thing to me.
Good thing you got the stud out! Sometimes they don't come out so good.
Even a good torque wrench loses it's 'tune' after awhile. There are tool shops that calibrate wrenches...........
Consider the source
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- Mr. Wibbens
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Just don't use Orange High Temp Silliycone!
I never thought I'd ever hear the end of that one!
I never thought I'd ever hear the end of that one!
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- Indawoods
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I know folks who use paint.... Seems to work.
*** Administrator //***
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "