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seruzawa · 08-28-2006, 04:55 AM

YZ's are supposed to idle?

brax4444 · 08-28-2006, 05:42 AM

What kind of carb do they have? Shouldn't idle be controlled by a screw?

Tadgh · 08-28-2006, 05:44 AM

former 250yz owner....never idled unless you turn up the tickover very high...that can be scary when you shut off the throttle and the overrun still carries you on.....

did it idle before you had the work done? ..anyhow buy a four stroke already 250f will make you wonder why people ride ring dingers any more

mscuddy · 08-28-2006, 06:19 AM

Look for an air leak, check the base gasket, reed block gaskets...get new crank seals too.

That's the biggest reason for non-ideling 2 strikers.

SRMark · 08-28-2006, 07:05 AM

You rebuilt it and didn't clean the carb or replace the spark plug at the same time? And you didn't check the compression before starting the rebuild? Shame on you. The bike is misbehaving because you pissed it off. Best to sell it now and work on establishing good karma with a brand new machine.

Buzglyd · 08-28-2006, 10:02 AM

You probably put biodiesel in it.

pplassm · 08-29-2006, 03:49 AM

These comments are funny! Poor guy would have been better off writing to Mr. Know-it-All!

Tigercub · 08-29-2006, 07:53 AM

I'm not familiar with 2-strokes, except lawnmowers and weed-wackers. But, here's my 2 cents anyway.

1) Check to make sure ignition timing is correct.

2) Make sure the carb is sealed, with gasket and gasket sealer to the intake manifold. Air leaks here cause rough idle, but aren't as noticable off idle.

3) Open up the carb and make sure the slide needle is fixed to the bottom of the slide. If the needle can move up and down you'll get very erratic running.

4) The carb slide should not rattle in its bore or it will let too much air pass.

Finally, if all these answers sound like I've only ever worked on 4-strokes then change your question to match my answers.

08-28-2006, 04:55 AM	#1
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	Re: YZ125 Help YZ's are supposed to idle? __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

08-28-2006, 05:42 AM	#2
brax4444 Registered Member Join Date: Jun 2007 Posts: 147	Re: YZ125 Help What kind of carb do they have? Shouldn't idle be controlled by a screw?

08-28-2006, 05:44 AM	#3
Tadgh Registered Member Join Date: Jun 2007 Posts: 155	Re: YZ125 Help former 250yz owner....never idled unless you turn up the tickover very high...that can be scary when you shut off the throttle and the overrun still carries you on..... did it idle before you had the work done? ..anyhow buy a four stroke already 250f will make you wonder why people ride ring dingers any more

08-28-2006, 06:19 AM	#4
mscuddy MODERATOR X Join Date: Jun 2007 Location: Next to my still checkin the temp. Posts: 5,444	Re: YZ125 Help Look for an air leak, check the base gasket, reed block gaskets...get new crank seals too. That's the biggest reason for non-ideling 2 strikers. __________________ A gun is a tool, Marian; no better or no worse than any other tool: an axe, a shovel or anything. A gun is as good or as bad as the man using it. Remember that.

08-28-2006, 07:05 AM	#5
SRMark Founding Member Join Date: Jun 2007 Posts: 1,465	Re: YZ125 Help You rebuilt it and didn't clean the carb or replace the spark plug at the same time? And you didn't check the compression before starting the rebuild? Shame on you. The bike is misbehaving because you pissed it off. Best to sell it now and work on establishing good karma with a brand new machine.

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08-28-2006, 10:02 AM	#6
Buzglyd Founding Member Join Date: Nov 2001 Posts: 10,137	Re: YZ125 Help You probably put biodiesel in it. __________________ Jay Leno: "President Obama released his tax returns. It turns out he made $900,000 less in 2011 than he did in 2010. You know what that means? Even Obama is doing worse under President Obama."

08-29-2006, 03:49 AM	#7
pplassm Founding Member Join Date: Nov 2001 Posts: 3,875	Re: YZ125 Help These comments are funny! Poor guy would have been better off writing to Mr. Know-it-All! __________________ Mongo just pawn in game of life.

08-29-2006, 07:53 AM	#8
Tigercub Founding Member Join Date: Nov 2001 Posts: 1,125	Re: YZ125 Help I'm not familiar with 2-strokes, except lawnmowers and weed-wackers. But, here's my 2 cents anyway. 1) Check to make sure ignition timing is correct. 2) Make sure the carb is sealed, with gasket and gasket sealer to the intake manifold. Air leaks here cause rough idle, but aren't as noticable off idle. 3) Open up the carb and make sure the slide needle is fixed to the bottom of the slide. If the needle can move up and down you'll get very erratic running. 4) The carb slide should not rattle in its bore or it will let too much air pass. Finally, if all these answers sound like I've only ever worked on 4-strokes then change your question to match my answers.