Posts
13
Joined
1/7/2019
Location
SE
Bike is a 2017 yz250f.
If I put the bike in gear and get going it will just keep going without stalling even if the throttle is closed. Idle I set around 1800-1900 rpm. Checked the TPS and according to the book it’s supposed to be at 11-14 degrees when throttle is closed but I can only get it to 3 degrees before the screws stop it from turning anymore. It also seems to skip immediately from 80 degrees to 110 when turn the throttle. Could the TPS make the bike run without turning the throttle?
Thanks
If I put the bike in gear and get going it will just keep going without stalling even if the throttle is closed. Idle I set around 1800-1900 rpm. Checked the TPS and according to the book it’s supposed to be at 11-14 degrees when throttle is closed but I can only get it to 3 degrees before the screws stop it from turning anymore. It also seems to skip immediately from 80 degrees to 110 when turn the throttle. Could the TPS make the bike run without turning the throttle?
Thanks
Did you have the tank off recently and hooked on the cable?
Air leak from airbox to throttle body?
If you twist the throttle and let it snap back is it fully free?
Sounds like it snaps back fully when you open the throttle.
Don't think it's leaking air. Had the throttlebody off last week and everything seemed fined/no cracks in the rubber and it's mounted correctly.
When you removed the throttle body did you use a new gasket when it was reinstalled?
Also, I have never seen TPS spec's like you posted. They are normally set by voltage. Most are set too lean from the factory.
Paw Paw
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