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Saint Marys, OH
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eric513anderson
2/12/2019 1:01pm
2/12/2019 1:01pm
Edited Date/Time
5/16/2019 2:50pm
Long story short. After a complete rebuild I believe my ignition timing is off on my 2011 YZ 250. I marked the stator on the edges of where the bolts were to make sure I got it back in the right place. After some riding time the bike just feels gutless on the bottom end. I rode a friends 2017 YZ 250 and I was blown away by how much bottom end his had compared to mine. His bike is bone stock wirh the exception of a FMF powercore 2 silencer. My bike has a full FMF exhaust, VForce 3 reeds and the squish bad was machine for a 50/50 mix of race/pump gas. Mine “should” have more bottom end power right? The bike just feels like a 125 on the bottom with the 250 mid up power. After some reading I think the ignition timing to too far retard. I want to set it the correct way so I got a dial indicator and cut a old spark plug. Problem is. It doesn’t clear the frame. Just my luck. Any other tips on how to check the timing the correct way? I got this gauge for $12 so I figured I’d try it
Also those of you who have messed with the YZ timing how many degrees (thousandths on the gauge) did you like it past TDC? Or is it just a ride and feel kinda thing?
Also those of you who have messed with the YZ timing how many degrees (thousandths on the gauge) did you like it past TDC? Or is it just a ride and feel kinda thing?
https://thumpertalk.com/forums/topic/584339-yz250-timing-thread/
Somebody else said you could rebuild a 2005 YZ to be just like a new bike.
All of those people were wrong.
The best you can hope for is to get your YZ working as if it rolled off the showroom. That's a great place to start testing.
The Shop
and then wedged it into the spark plug hole. That should give you the clearance you need.
No, the gauge did not move at all as observed by mucho shakes and wiggles. Heck, it's
only taking the load of that tiny spring in the gauge so it doesn't take much to hold it still. Worked primo.
Most of the time you can fish the piece out and it will never have a problem again.
Pit Row
Here’s the video I took of it running last night
The plug looks good.
Call Tom Morgan and TMR and pick his brain. He is out of WI.
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