Motorcycles Logo

Related Topics:

Question about Yamaha YZ 250 Motorcycles

Open Question

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..

Posted by sysu_for_gir on

5 Related Answers


Paul W

  • 404 Answers

SOURCE: yz 250 wont kickstart

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


  • 3567 Answers

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.
Please rate the solution as a "FixYa" if able. Thanks!

Posted on Mar 23, 2009


  • 79 Answers

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


  • 1 Answer

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

Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:


Kick starter hit back strong..why??

That will happen on compresson roll back.
Try slowly bringing donw the kicker a couple of times till you feel it build up on the compression stroke.
Then turn on ignition and start the bike.

My yz 250 will start with a roll start,but I can't

Not sure of the age of your YZ 250 ( You never said!) but in most Yamaha they use dual stage stator which means a stator will charge a spark plug at two speeds one on kick starter speed and the other on running speeds it is common that the low speed circuit on the stator to fail leaving you with a bike that only starts when pushed its a very simple test to diagnose it be worth checking you have spark on kick starter speeds with spark plug out the motor but still connected

1982 yz 125. try starting it, takes a lot of kicks. when she finally starts, she runs and idles strong. now she putted out, i cant her started again, and while trying to start it, it popped like a backfire...

Sounds like the spark plugs are not properly gapped, carb flooding from too many tries and ignition timing chain has moved away from specified point. Just try to check those components.
Start taking the spark plugs out, gap them properly according to factory specification, use air compressor air duster to blow excess fumes out of the combustion chamber. Remove the engine/valve cover. Check whether the ignition timing notched are still properly aligned. if not then use the timing adjuster to tighten the slack else if already maxxed out then need to replace it.
Hope this helped. Cheers

Parked bike. next day when tried to start ,kick starter locked up ,after talking to a shop i opened up cover on lt side and turned engine over with a socket, but after a few kicks it locks up again .bike...

Most likely, you have a top end failure(piston/cylinder). Once you disassemble the top end, be sure to check for signs of loose or shattered bearings in the bottom end. Often, this can be the actual cause of the top end failure.

*Help me out. Rate me!

Clicking on up stroke of kick starter, wont start.

When an engine seizes you really have done great harm to it. My advice is to pull the motor and split the cases to inspect crank, and other parts. Invest in new cylinder & piston (w\rings) at the very least. It is more likely that you are going to need some new bearings and machine work. Sorry for the bad news...but that is exactly what seizing an engine is, bad news.

Engine seized?

First thing to do is make sure it's the kick starter that has seized and not the engine. Take the cover off the end of the crankcase and try to turn the crankshaft. Apparently these engines were notorious for doing bottom ends. Start pulling it down and see what you find..
Not finding what you are looking for?


Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 3 Expert

1704 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1198 Answers


Level 2 Expert

99 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides