Bad ignition 2000 yz 250 when i try to start the kick starter hit back..end strong..why?? i cant start the bike..please help..

Paul W

• 404 Answers

SOURCE: yz 250 wont kickstart

Hi!
You obviously look after your machine and very sensible when laying up, however as you are probably aware 2 strokes rely heavily on compression, A. to produce excellent combustion and B. to draw fuel into the chamber. So when you try kick starting you can't get enough revolutions to draw the correct amount of fuel into the cylinder, where as you push start you constantly turn over the engine increasing compression slightly and bingo it fires.
Can you remember how when kick starting it before this problem the feel on resistance when kicking over? has it now become a lot easier? if so you possibly have worn or broken compression piston rings.
A compression test will reveal this, I hope this sorts your query?
Press the Blue button please for my FREE effort,
Thank You!
Paul 'W' U.K.

Posted on Feb 06, 2009

SOURCE: while riding my yz 125 it just died and won,t kick up again

• If a hole in the piston then install new piston and rings. Next, clean the carbon off the head and install a new head gasket.
• If cylinder wall is scared the piston has seized up. Pull the cylinder off and take it to the dealer. Have them bore the cylinder and return it along with a new oversize piston and rings.
• While at the parts counter, get a new stock spark plug and a supply of Yamalube Two Stroke Motor Oil. You need to add 4 ounces per gallon when filling up. This will be a 32/1 gas to oil ratio. NEVER ride the bike without at least the needed 32/1 mix.

Posted on Mar 23, 2009

SOURCE: YZ 125 kick starter doesn't spring back

Spring is busted. If you aren't comfortable with piles of extraneous parts floating around, take it to the shop.

Posted on Sep 04, 2009

Arnie Burke

• 7336 Answers

SOURCE: Piaggio Zip 50cc not starting... :(

test the batt -it must be 12v at all times -slightly lower and ignition wont function

Posted on Jan 05, 2010

SOURCE: dirt bike thats hard to start..

needle and seat are worn out in carb, to much fuel is flooding cylinder. remove carb, clean, get new needle and seat, set float. problem goes away. pull your plug after kicking. its probably wet.
When you push, or pull start you evacuate excessive fuel, when engine is warm, easier to start extra fuel burns easier.

Posted on Jan 15, 2010