White smoke NO POWER!!! HELP

joshpico · 01-21-2008, 10:00 AM

2k yz 250 - 2 stroke - Going up a huge muddy and slippery hill last weekend. Pretty much was pinning it, then letting off, and then pinning it in an attempt to make it all the way up. All of a sudden a total loss of power and a thick cloud of white smoke. I laid it down, and made my way down, bike still running... At the bottom of the hill I went through all of the gears, finding that no matter the gear I could only must maybe 5 miles per hour out of the bike. It sounded ok in idle and revved normal, just with no power whatsoever. My conclusion was that I burnt up the piston ring or cracked the cylinder. Does this sound correct. I'm just hoping it is not anything to do with the bottom end, as I have never torn that apart. Top end no big deal. 2 hours and a hundred bucks... Any input???

Thanks -

wr250f95 · 01-21-2008, 10:16 AM

top end most likely, by it revs fine, itll rev it just wont hit the power band right?

tigmaster · 01-23-2008, 10:16 PM

it is a blown head gasket. where did the white smoke come from? exhaust or from the engine? either that or a cracked block. white smoke is antifreeze and from where you say it came from, i will be able to tell you exactly what is wrong.

Yamaslamma · 01-31-2008, 10:53 PM

I hate to see the one post dude!! Lets get him back some how.

tigmaster · 01-31-2008, 11:11 PM

maybe he didnt like the news he received.

gscx · 02-01-2008, 02:45 PM

people alaways do that

wr250f95 · 02-01-2008, 03:18 PM

or he just didint understand what this is.

gscx · 02-01-2008, 06:21 PM

well at least we can take the honor of people coming to us for questions though

01-21-2008, 10:00 AM	#1 (permalink)
joshpico C Rider Join Date: Jan 2008 Posts: 1 iTrader: (0)	White smoke NO POWER!!! HELP 2k yz 250 - 2 stroke - Going up a huge muddy and slippery hill last weekend. Pretty much was pinning it, then letting off, and then pinning it in an attempt to make it all the way up. All of a sudden a total loss of power and a thick cloud of white smoke. I laid it down, and made my way down, bike still running... At the bottom of the hill I went through all of the gears, finding that no matter the gear I could only must maybe 5 miles per hour out of the bike. It sounded ok in idle and revved normal, just with no power whatsoever. My conclusion was that I burnt up the piston ring or cracked the cylinder. Does this sound correct. I'm just hoping it is not anything to do with the bottom end, as I have never torn that apart. Top end no big deal. 2 hours and a hundred bucks... Any input??? Thanks -

01-21-2008, 10:16 AM	#2 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,831 iTrader: (1)	top end most likely, by it revs fine, itll rev it just wont hit the power band right? __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

01-23-2008, 10:16 PM	#3 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,526 iTrader: (1)	it is a blown head gasket. where did the white smoke come from? exhaust or from the engine? either that or a cracked block. white smoke is antifreeze and from where you say it came from, i will be able to tell you exactly what is wrong. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

01-31-2008, 10:53 PM	#4 (permalink)
Yamaslamma C Rider Join Date: Jan 2008 Posts: 199 iTrader: (0)	I hate to see the one post dude!! Lets get him back some how. __________________ I have an idea!! Lets go riding!!

01-31-2008, 11:11 PM	#5 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,526 iTrader: (1)	maybe he didnt like the news he received. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

02-01-2008, 02:45 PM	#6 (permalink)
gscx Pro Mototips Member Join Date: Aug 2007 Location: bridgeville DE Posts: 2,233 iTrader: (0)	people alaways do that __________________ Sold

02-01-2008, 03:18 PM	#7 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,831 iTrader: (1)	or he just didint understand what this is. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

02-01-2008, 06:21 PM	#8 (permalink)
gscx Pro Mototips Member Join Date: Aug 2007 Location: bridgeville DE Posts: 2,233 iTrader: (0)	well at least we can take the honor of people coming to us for questions though __________________ Sold

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