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JCblue
07-23-2022, 06:48 PM
I have a BD250-7 cruiser, and it keeps stalling while idling. It happens when it's in both neutral and gears. I tried to give it gas and it would sometimes stall too. The engine is 165fmm-p. Has anyone has the same issue I have? Any ways I can fix it?
culcune
07-24-2022, 02:37 AM
Have you adjusted the valve lash?
JCblue
07-26-2022, 12:42 PM
No. How do I adjust it?
After the engine is warm, the bike's RPM would drop to around 1000. It sounds like it running lean and sometimes it just stalls.
culcune
07-26-2022, 05:52 PM
No. How do I adjust it?
After the engine is warm, the bike's RPM would drop to around 1000. It sounds like it running lean and sometimes it just stalls.

I think you should look at a few of the numerous videos on YouTube. Being a Chinese vertical thumper. you should be able to find a few of the videos out there of people adjusting their 2XXcc dual-sports. You have essentially the same engine, only yours is fuel-injected. There may be videos of the actual Baodiao/Boom 223cc engine, but most bikes listed under Boom will be videos of the horizontal 125cc Vader.
sco
08-03-2022, 12:55 PM
I have a bd250-5. It had the same issue. It was also sluggish and missed below 4000 rpm. Check the spark plug. The gap was so small I had to force the 0.020 guage into the gap. I got a new plug and gapped it at 0.030 and while it still is a bit rough until warm once it is warm it idles perfect.
bosbears02
09-12-2022, 01:44 PM
I have a bd250-5. It had the same issue. It was also sluggish and missed below 4000 rpm. Check the spark plug. The gap was so small I had to force the 0.020 guage into the gap. I got a new plug and gapped it at 0.030 and while it still is a bit rough until warm once it is warm it idles perfect.

The spark plug and the tmap on my Vitacci Titan250 165FMM-L worked for me.
I've literally only got 5 miles on it so I haven't gotten to the valve clearance yet.

Amazon links for plug and tmap...
https://www.amazon.com/gp/product/B000CSGWZC/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B082TSZDHY/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1