Posts
11
Joined
9/23/2018
Location
North Branch, MI
US
On my 2013 KX250F the bike all the sudden wants to cut in and out like it is starving for fuel. Problem started after I crashed awhile back and had to replace just the subframe and exhaust but nothing else. After I put the bike back together this is when I was having problems. Started off whenever I was half way through a moto the bike would just start missing like when I was at a steady half throttle and seemed like when the bike was hot the problem would occur. The bike still starts right up every time. After I put a couple more rides on it the problem got worse and now cuts in and out when 0 to half throttle right off when I warm the bike up. Even when the bike is warming up I can tell it's not right. I have checked for codes and the bike is code free. Went through throttle body and had injectors cleaned, new plug, and checked valve clearances, checked fuel pump and still nothing. If anyone can help I would appreciate some feedback! Need this bike back and running asap. Thanks!
This issue could literally be 100 diff things, so lets start simple first.
You'll need to do some research on youtube and check out TPStool.com.
Another common suspect would be a dirty or clogged fuel pump filter. But it sounds like you've already inspected that.
By the way, my paint marks on the tps looked correct too when it was cutting out. the TPS is so sensitive to movements in my experience.
Does the hole shot button on the handlebars display any codes/lights while the bike is running? Maybe an audible video that shows the symptoms will helpZ
Is it cutting out to the point where it’s nearly un-rideable? Not like a fuel rich hesitation/burble, more like the bike has run out of fuel?
The Shop
Have you checked the fuel pump and filter?
Paw Paw
Something on your bike is telling it to run lean. You got air sensors, TPS, coolant temp sensor, or an air leak making it run that way.
Does adjusting your TPS voltage to the richest setting make a difference?
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