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Discussion Starter · #1 ·
I am having trouble with the bike idling.

This all happened when I changed over to synthetic oil.

When i put the choke on full, start the bike, it doesn’t want to run. It will idle around 1,500 rpms, and if i dont touch the throttle it will stall. I have to play with the throttle for a bit till it warms up and then after about 2 or 3 min. it will idle properly. I do not believe it is a temp problem b/c it has done it when it has been over 90 outside. Before I put in synthetic oil, i could normally start it without any choke and it would warm up fine.

Is it the oil, or do you think that is just a coincidence?
 

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Originally posted by Dronetone
it is very typical and normal for the ex 250r to have an inconsistent idle, I had a 250 about ten years ago and it nevered idled right.
Ummn... Wrong.

Have you ever worked on the carbs in the 10 years you've had it?

This spring alone, I worked on 6 different Ninja 250's that had sat for various lengths of time, and had their carbs get gunked up.

After a proper carb cleaning, mixture screw setting, float height setting, and carb synch, each one of those 6 bikes ran better than they did when the owners first bought them,and that was the owners own words, each and every time.

BC.
 
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